US20070289651A1 - Dispensing valve - Google Patents
Dispensing valve Download PDFInfo
- Publication number
- US20070289651A1 US20070289651A1 US11/295,840 US29584005A US2007289651A1 US 20070289651 A1 US20070289651 A1 US 20070289651A1 US 29584005 A US29584005 A US 29584005A US 2007289651 A1 US2007289651 A1 US 2007289651A1
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- US
- United States
- Prior art keywords
- valve
- connector sleeve
- valve head
- dispensing
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
- F16K15/147—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery the closure elements having specially formed slits or being of an elongated easily collapsible form
- F16K15/1471—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery the closure elements having specially formed slits or being of an elongated easily collapsible form slits arranged along multiple axes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
- F16K15/147—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery the closure elements having specially formed slits or being of an elongated easily collapsible form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/04—Closures with discharging devices other than pumps
- B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
- B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
- B65D47/2031—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure the element being formed by a slit, narrow opening or constrictable spout, the size of the outlet passage being able to be varied by increasing or decreasing the pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
- F16K15/147—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery the closure elements having specially formed slits or being of an elongated easily collapsible form
- F16K15/1472—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery the closure elements having specially formed slits or being of an elongated easily collapsible form the closure elements being fixed onto an internally extending mount
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7879—Resilient material valve
- Y10T137/788—Having expansible port
Definitions
- the present invention relates to product packaging, and in particular to a self-sealing valve for fluid products, and the like.
- packages or containers are presently available for packaging non-solid products of the type which are capable of flowing, such as fluid or fluidized materials, including liquids, pastes, powders, and the like, which substances are collectively and generically referred to herein as “fluids”.
- Some such packages include a dispenser which. permits a selected amount of fluid to be discharged from the package, and then reseals to close the package.
- Self-sealing dispensing valves have been used in packaging for certain types of products, such as the container disclosed in U.S. Pat. No. 4,728,006 to Drobish et al, which is designed for shampoos, conditioners, and the like.
- such valves have been known to experience some types of sealing problems, and inconsistent dispensing characteristics, particularly when the packages are exposed to significant temperature variations.
- Valves constructed from most conventional plastic materials cannot be used in at least certain types of packages, since they either react with or adulterate the product. For instance, in food packaging, care must be taken to avoid the use of valve materials which might contain any type of toxin. Furthermore, active ingredients in products can cause the valve to either embrittle or soften, thereby ruining the designed flow rate and/or self-sealing characteristics of the valve.
- Liquid silicone rubber valves have recently been used in some types of packaging, and have proven particularly advantageous since the material is inherently quite inert, and will therefore not either adulterate or react with the packaged product. Examples of such packaging are provided in applicant's U.S. Pat. No. 5,033,655 to Brown.
- liquid silicone rubber possesses many attributes for use in packaging, it also has other characteristics which render such applications problematic.
- the surfaces of liquid silicone rubber parts are extremely tacky or sticky, having a very high coefficient of friction.
- the surfaces of the valve flange will stick tightly to the adjacent surfaces of the container and collar before the collar can be tightened securely enough to create a leak-resistant seal. Tightening of the collar often causes the valve flange, as well as the entire valve to distort from its designed shape, thereby preventing the formation of a secure seal, and/or changing the intended dispensing and sealing characteristics of the valve.
- Another problem experienced with prior dispensing packages relates to achieving a proper design balance between the package container, valve, and fluid product, so that the product can be repeatedly dispensed without requiring excess force, and will neatly discharge only that amount of product which is desired by the user, particularly in keeping with the type of product involved. For instance, when dispensing highly concentrated fluid products, such as hand soaps, and the like, the user will typically require only a small amount or dollop of soap per application to achieve satisfactory results. In contrast, when using other types of fluid products, such as skin moisturizers, tanning formulas, and the like, larger quantities of product are typically required by the user for each application.
- the ability of the valve to quickly and readily open in response to moderate pressure on the container is important, as is the ability of the valve to quickly and securely close when the pressure has been released. Also important is the amount of pressure which must be maintained on the container to sustain fluid through the valve once the valve is opened. The ability to quickly and accurately achieve a proper balance between all of these factors is very desirable in designing dispensing packages.
- One aspect of the present invention is a dispensing package for fluid products and the like, comprising a container having a dispensing valve mounted therein.
- the dispensing valve includes a marginal flange which seals about a discharge opening of the container, and a valve head with an orifice therethrough which opens and closes in response to the application and release of a predetermined discharge pressure to control fluid flow therethrough.
- the valve includes a connector sleeve having one end connected with the valve flange, and an opposite end connected with the valve head adjacent a marginal edge thereof.
- the connector sleeve has a resiliently flexible construction, whereby when pressure within the container is raised above the predetermined discharge pressure, the valve head shifts outwardly in a manner which causes the connector sleeve to double over and then extend rollingly, and thereby apply a torque to the valve head which assists in opening the orifice.
- Another aspect of the present invention is a dispensing valve for fluid product packaging and the like, having a marginal valve flange shaped to seal about a discharge opening of the container.
- the valve includes a valve head having a marginal edge, interior and exterior sides, and an orifice extending therebetween which opens to permit fluid flow therethrough in response to communication with a predetermined discharge pressure, and closes to shut off fluid flow therethrough upon removal of the predetermined discharge pressure.
- a connector sleeve with a resiliently flexible construction has one end connected with the valve flange, and the opposite end connected with the valve head adjacent to the marginal edge thereof, whereby when pressure in excess of the predetermined discharged pressure is applied to the interior side of the valve head, the valve head shifts outwardly in a manner which causes the connector sleeve to double over and then extend rollingly, and thereby apply a torque to the valve head which assists in opening the orifice.
- Yet another aspect of the present invention is a dispensing package for fluid products and the like, comprising a container having a dispensing valve mounted therein for controlling the flow of fluid product from the container.
- the dispensing valve includes a marginal valve flange, a valve head with an orifice which permits fluid flow therethrough, and a connector sleeve having one end connected with the valve flange, and an opposite end connected with the valve head adjacent a marginal edge thereof, such that the dispensing valve assumes a generally hat-shaped, side elevational configuration which normally projects inwardly toward the interior of the container.
- the connector sleeve has a resiliently flexible construction which permits the valve head to shift outwardly through the valve flange by doubling over the connector sleeve, which then extends rollingly outwardly.
- Yet another aspect of the present invention is a dispensing valve, comprising a marginal valve flange, and a valve head with an orifice therethrough which selectively opens to permit fluid flow in response to communication with a predetermined discharge pressure.
- the valve head is configured such that it assumes a generally convex orientation when the orifice is open.
- the dispensing valve also includes a connector sleeve, which has a resiliently flexible construction, with one end connected with the valve flange, and an opposite end connected with the valve head adjacent the marginal edge thereof, whereby when pressure in excess of the predetermined discharge pressure is applied to the interior side of the valve head, the valve head shifts outwardly in a manner which causes the connector sleeve to double over and then extend rollingly, and thereby apply a torque to the valve head which resiliently snaps the valve head into its convex orientation to quickly and fully open the orifice.
- Yet another aspect of the present invention is a self-sealing dispensing valve for fluid product packaging and the like, comprising a marginal valve flange, and a valve head with an orifice therein which selectively permits fluid flow through the valve.
- the interior side of the valve head has an outwardly curving arcuate side elevational shape defined by a first radius, while the exterior side of the valve head has an outwardly curving arcuate side elevational shape defined by a second radius, which is less than the first radius.
- a connector sleeve is provided with a resiliently flexible construction, and has one end connected with the valve flange, and the opposite end connected with the valve head.
- Yet another aspect of the present invention is a self-sealing dispensing valve for fluid product packaging and the like, comprising a marginal valve flange, and a valve head having a discharge opening therein to selectively permit fluid flow.
- the valve head includes an exterior side having an outwardly curving arcuate side elevational shape defined by a first radius, and an interior side with a center portion having a generally flat side elevational shape, and a marginal portion having an outwardly curving arcuate side elevational shape defined by a second radius, which is greater than the first radius.
- the discharge orifice extends from the center portion of the exterior surface to the interior surface of the valve head to achieve easy and complete opening of the discharge orifice when the predetermined discharge pressure is applied thereto, and secure and complete closing of the discharge opening when the predetermined discharge pressure is released.
- Yet another aspect of the present invention is a dispensing valve for fluid product packaging, comprising a marginal valve flange, and a valve head having an orifice therein which opens to permit fluid flow therethrough in response to a predetermined discharge pressure, and closes to shut off fluid flow therethrough upon removal of the predetermined discharge pressure.
- the dispensing valve includes a substantially imperforate rolling diaphragm positioned between and interconnecting the valve flange and the valve head, which has a flexible construction which permits the valve head to shift between a retracted position on an interior side of the marginal flange for storage, and an extended position on an exterior side of the marginal flange for dispensing.
- valve head When pressure in excess of the discharge pressure, is applied to the container, the valve head first shifts to the extended position, and then opens the orifice to discharge the fluid product therethrough. Upon release of the pressure, the orifice first closes to shut off the flow of fluid product therethrough, and the valve head then shifts to the retracted position for storage.
- Yet another aspect of the present invention is a valve, comprising a marginal valve flange, and a valve head having a marginal edge, interior and exterior sides, and an orifice extending therebetween which in response to communication with a predetermined discharge pressure, shifts to a fully open position to permit fluid flow therethrough.
- a connector sleeve is provided, having a resiliently flexible construction, with one end connected with the valve flange, and an opposite end connected with the valve head adjacent the marginal edge thereof, which permits the valve head to shift with respect to the marginal valve flange in a manner which causes the connector sleeve to double over and then extend rollingly, and thereby apply an outwardly directed torque to the valve head which tends to open the orifice.
- the valve head is configured with a plan shape which expands or dilates as the orifice is shifted to the fully open position, which expansion is resisted by the connector sleeve, so as to inwardly compress the valve head, which inward compression and torque applied to the valve head by the connector sleeve combine to resiliently maintain the orifice in the fully open position, whereby that pressure required to maintain fluid flow through the orifice is substantially less than the predetermined threshold pressure, so as to provide greater ease of dispensing and flow control.
- Yet another aspect of the present invention is a dispensing package and associated valve for fluid products and the like, comprising a container having the dispensing valve mounted therein.
- the dispensing valve controls the flow of fluid product from the container, and has a marginal portion sealing about a discharge opening of the container.
- the valve also has a head portion including a central area with an orifice which opens to permit fluid flow therethrough in response to a predetermined discharge pressure within the container, and closes to shut off fluid flow therethrough upon removal of the predetermined discharge pressure within the container, and closes to shut off fluid flow therethrough upon removal of the predetermined discharge pressure.
- the valve includes a generally J-shaped connector sleeve, having a resiliently flexible construction with a first leg portion thereof connected with the marginal portion, and a second leg portion thereof connected with the head portion.
- the first and second leg portions are mutually oriented at an acute included angle, and join one another at an arcuate portion which facilitates movement of the head portion of the valve when dispensing product from the container.
- Yet another aspect of the present invention is a dispensing package and associated valve for fluid products and the like, comprising a container having the dispensing valve mounted therein.
- the dispensing valve controls the flow of fluid product from the container, and has a marginal portion sealing about a discharge opening of the container.
- the valve has a head portion including a central area with an orifice which opens to permit fluid flow therethrough in response to a predetermined discharge pressure within the container, and closes to shut off fluid flow therethrough upon removal of the predetermined discharge pressure.
- the valve also has a resiliently flexible connector sleeve, including a first end portion thereof connected with the marginal portion, and a second end portion thereof connected with the head portion.
- the second end of the connector sleeve has an inverted J-shape which extends arcuately into the head portion to facilitate movement of the head portion of the valve when dispensing product from the container.
- Yet another aspect of the present invention is a dispensing package and associated valve for fluid products and the like, comprising a container having the dispensing valve mounted therein.
- the dispensing valve controls the flow of fluid product from the container, and has a marginal portion sealing about a discharge opening of the container.
- the valve has a head portion including a central area with an orifice which opens to permit fluid flow therethrough in response to a predetermined discharge pressure within the container, and closes to shut off fluid flow therethrough upon removal of the predetermined discharge pressure.
- the valve also has a head portion including an exterior surface which interfaces with ambient environment and has a generally concave shape when viewed from outside the container, and interior surface which interfaces with the fluid product in the container and has a central area and a generally inclined outer portion which tapers inwardly toward the center area, such that the exterior and interior surfaces converge toward the central area of the head portion to provide a tapered construction with reduced thickness adjoining the orifice.
- Yet another aspect of the present invention is a dispensing package and associated valve for fluid products and the like, comprising a container having the valve mounted therein.
- the dispensing valve controls the flow of fluid product from the container, and has a marginal portion sealing about a discharge opening of the container.
- the valve has a head portion including a central area with an orifice which opens to permit fluid flow therethrough in response to a predetermined discharge pressure within the container, and closes to shut off fluid flow therethrough upon removal of the predetermined discharge pressure.
- the head portion has an exterior surface which interfaces with ambient environment, and an interior surface which interfaces with the fluid product in the container.
- the exterior and interior surfaces of the head portion taper inwardly toward the center area, such that the exterior and interior surfaces converge toward the central area of the head portion to provide a tapered construction with reduced thickness adjoining the orifice.
- the principal objects of the present invention are to provide a dispensing package and an associated self-sealing valve which are capable of easily and neatly dispensing a wide variety of different types of fluid products.
- the self-sealing valve is matched with both the container and the type of fluid product to be dispensed, so as to quickly and securely seal, yet readily and fully open when the user applies modest pressure to the container.
- the valve includes a resiliently flexible connector sleeve which is configured to apply a torque to the valve head which assists in opening the orifice.
- the connector sleeve has sufficient flexibility that pressure increases in the interior of the container, such as those caused by thermal expansion, are offset by shifting the valve head on the connector sleeve, so as to alleviate excess pressure on the orifice.
- the connector sleeve is also configured to provide sufficient flexibility that any misalignment and/or distortion of the valve flange when attached to the associated container are not transmitted to the valve head, thereby permitting unhindered opening and closing of the orifice.
- the connector sleeve is also configured to provide sufficient flexibility that shock impact forces, and the like applied to the container are absorbed by shifting the valve head on the connector sleeve, so as to avoid inadvertent opening of the valve orifice.
- the valve is configured to provide a generally constant flow rate therethrough, even when exposed to a relatively wide range of container pressures.
- the valve is configured such that once the orifice is shifted open, the amount of pressure required to maintain fluid flow through the orifice is reduced, so as to provide greater ease of operation, without sacrificing secure sealing of the valve.
- the valve is extremely versatile, and may be used in either top, bottom or side dispensing packages to accommodate a wide variety of different applications.
- the valve is very durable, while having reduced manufacturing costs, and an uncomplicated design. design.
- the overall package is efficient in use, economical to manufacture, capable of a long operating life, and particularly well adapted for many different proposed uses.
- FIG. 1 is a perspective view of a dispensing package embodying the present invention, wherein a portion thereof has been broken away to reveal a self-sealing valve mounted in a bottom portion of an associated container.
- FIG. 2 is a side elevational view of the dispensing package, wherein a portion thereof has been broken away to reveal the valve, which is shown in a fully retracted and fully closed position.
- FIG. 3 is a side elevational view of the dispensing package, wherein a portion thereof has been broken away to reveal the valve, which is shown in a fully extended and fully open position.
- FIG. 4 is an enlarged, fragmentary top view of the valve.
- FIG. 5 is an enlarged, side elevational view of the valve.
- FIG. 6 is an enlarged, cross-sectional view of the valve.
- FIG. 7 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in the fully closed and fully retracted position.
- FIG. 8 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in a fully closed, and partially retracted position.
- FIG. 9 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in a fully closed and partially extended position.
- FIG. 10 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in a fully closed and fully extended position.
- FIG. 11 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in a fully closed and fully extended position, wherein a valve head portion thereof is shown beginning to snap outwardly.
- FIG. 12 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in a fully closed, and fully extended position, wherein the valve head portion of which is shown continuing to snap outwardly.
- FIG. 13 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in a fully open, and fully extended position, wherein the valve head portion of which is shown snapped fully outwardly.
- FIG. 14 is an enlarged, bottom plan view of the valve shown in the position illustrated in FIG. 13 .
- FIG. 15 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in a fully closed, and partially extended position abutting a container closure.
- FIG. 16 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in a fully closed and fully extended position abutting an alternative container closure.
- FIG. 17 is an enlarged, fragmentary top plan view of another dispensing valve embodying the present invention.
- FIG. 18 is an enlarged, fragmentary bottom plan view of the valve shown in FIG. 17 .
- FIG. 19 is an enlarged, cross-sectional view of the valve shown in FIGS. 17-18 .
- FIG. 20 is an enlarged, vertical cross-sectional view of the valve shown in FIGS. 17-19 installed in an associated top dispense container, with the container in a fully upright orientation, and the valve in a fully closed position.
- FIG. 21 is an enlarged, vertical cross-sectional view of the valve and associated top dispense container shown in FIG. 20 , with the container shown in an inverted orientation, and the valve in its fully closed position.
- FIG. 22 is an enlarged, cross-sectional view of the valve and associated top dispense container shown in FIGS. 20-21 , with the container in the inverted orientation, and the valve in a closed, partially extended position, wherein a valve head portion is shown beginning to snap outwardly.
- FIG. 23 is an enlarged, cross-sectional view of the valve and associated top dispense container shown in FIGS. 20-22 , with the container in the inverted orientation, and the valve in a fully open, and fully extended position, wherein the valve head. portion is shown snapped fully outwardly.
- FIG. 24 is an enlarged, cross-sectional view of yet another valve embodying the present invention.
- FIG. 25 is an enlarged, cross-sectional view of yet another valve embodying
- FIG. 26 is an enlarged, cross-sectional view of yet another valve embodying the present invention.
- FIG. 27 is an enlarged, cross-sectional view of yet another valve embodying the present invention.
- FIG. 28 is an enlarged, fragmentary, bottom plan view of yet another valve embodying the present invention.
- FIG. 29 is an enlarged, cross-sectional view of the valve shown in FIG. 28 .
- FIG. 30 is an enlarged, cross-sectional view of yet another valve embodying the present invention.
- FIG. 31 is an enlarged, cross-sectional view of yet another valve embodying the present invention.
- FIG. 32 is an enlarged, cross-sectional view of yet another valve embodying the present invention.
- the terms “upper”, “lower”, “right”, “left”, “rear”, “front”, “vertical”, “horizontal”, and derivatives thereof shall relate to the invention as oriented in FIGS. 1-3 .
- the invention may assume various alternative orientations and step sequences, except where expressly specified to the contrary.
- the specific devices and processes illustrated in the attached drawings, and described in the following specification are simply exemplary embodiments of the inventive concepts defined in the appended claims. Hence, specific dimensions and other physical characteristics relating to the embodiments disclosed herein are not to be considered as limiting, unless the claims expressly state otherwise. considered as limiting, unless the claims expressly state otherwise.
- the reference numeral 1 ( FIG. 1 ) generally designates a dispensing package embodying the present invention.
- Dispensing package 1 is particularly adapted for dispensing fluid products, such as liquid soaps, household cleaners, polishes, moisturizing creams, foodstuffs, and the like, and includes a container 2 with a self-sealing dispensing valve 3 mounted therein.
- Valve 3 includes a marginal flange 4 , a valve head 5 with a discharge orifice 6 therein, and a connector sleeve 7 , having one end connected with valve flange 4 , and the opposite end connected with valve head S adjacent a marginal edge thereof.
- Connector sleeve 7 has a resiliently flexible construction, such that when pressure within container 2 is raised above a predetermined amount, valve head 5 shifts outwardly ( FIGS. 8-15 ) in a manner which causes connector sleeve 7 to double over and then extend rollingly.
- the container 2 illustrated in FIGS. 1-3 is particularly designed for bottom dispensing, and includes a generally flexible, oblong container body 12 supported on a substantially rigid base 13 .
- Container body 12 is preferably integrally molded from an appropriate synthetic resin material or the like, so as to create a one-piece construction that includes oppositely oriented sidewalls 14 and 15 , a top 16 and a bottom 17 .
- the container sidewalls 14 and 15 are laterally flexible to pressurize and depressurize the interior of container 2 , and preferably have sufficient resilience or stiffness that they automatically return to their original shape upon release of any external forces which are applied to container 2 to dispense a fluid product 18 therefrom.
- the container bottom 17 illustrated in FIGS. 2 and 3 includes a downwardly opening neck 20 , which defines a discharge opening 21 about which the marginal flange 4 of valve 3 is positioned.
- the free end of neck 20 includes an annularly shaped groove 22 having a general L-shaped longitudinal cross-sectional configuration, which is shaped to closely receive the marginal flange 4 of valve 3 therein.
- Container base 13 includes a valve retainer ring 23 positioned adjacent groove 22 , and attached to container body 12 by a snap lock arrangement 24 .
- Container base 13 ( FIGS. 2 & 3 ) has a substantially flat bottom 25 adapted to abuttingly support dispensing package 1 on an associated surface, such as a countertop, sink, worksurface, or the like.
- Neck groove 22 is located inwardly of the bottom 25 of container base 13 , so as to position valve 3 in a generally recessed condition within dispensing package 1 , as explained in greater detail hereinafter.
- valve 3 has an integrally formed, one-piece construction.
- Valve 3 has an interior -side which interfaces with the fluid product 18 in container 2 , and an oppositely oriented exterior side which interfaces with ambient environment.
- Valve 3 is preferably molded from a resiliently flexible material, and in the illustrated example comprises a silicone rubber which is substantially inert so as to avoid reaction with and/or adulteration of the fluid product being packaged.
- valve 3 is produced at relatively high speeds through the molding of liquid silicone rubber.
- the illustrated marginal flange portion 4 ( FIGS. 4-6 ) of valve 3 has an annular plan shape, and a substantially L-shaped cross-sectional configuration, comprising an inner edge 30 , an outer edge 31 , a bottom 32 , and a top 33 with an outer rim 34 upstanding therefrom.
- Marginal valve flange 4 has substantial thickness between the bottom 32 and top 33 which is resiliently compressed upon attachment of retainer ring 23 to form a secure leak-resistant seal therebetween.
- the rim portion 34 of valve flange 4 positively locks valve 3 in neck groove 22 to prevent any radial movement therebetween.
- valve head 5 has a circular plan shape, and a generally tapered construction which is thicker at the radially outside portion of valve head 5 , and thinner at the radially inside portion thereof. This tapered construction assists in achieving the snap open/snap close action of valve 3 , as described below. More specifically, in the illustrated example, valve head 5 has an exterior side or surface 38 , which has an arcuately shaped side elevational configuration which opens or curves outwardly, toward the exterior of dispensing package 1 , and is defined by a first, predetermined radius. Valve head exterior surface 38 extends continuously between the interior sidewalls of connector sleeve 7 .
- Valve head 5 also includes an interior side or surface 39 , which has a marginal portion 40 with an arcuately shaped side elevational configuration which opens or curves outwardly, toward the exterior of dispensing package 1 , and is defined by a second predetermined radius.
- the radius of marginal portion 40 on interior surface 39 is larger than that of exterior surface 38 , such that the two surfaces converge toward the center of valve head 5 at or adjoining orifice 6 , and provide the above-noted inwardly tapered construction of valve head 5 .
- the interior surface 39 of valve head 5 also includes a center portion 41 , which has a circular plan shape, with a substantially planar or flat side elevational configuration, oriented generally perpendicularly to discharge orifice 6 .
- valve head 5 assists in improving the opening and closing characteristic of valve 3 , as set forth below.
- the outer perimeter of valve head 5 is defined by a circular marginal edge 42 , which begins at the outer edge 43 of marginal portion 40 , and extends outwardly therefrom with a slight outward taper, ultimately merging into connector sleeve 7 .
- the intersection of the marginal portion 40 and the center portion 41 of valve head 5 defines a circular edge 44 .
- the outside diameter of valve head 5 as measured along marginal edge 42 is substantially smaller than the inside diameter of marginal flange 4 , as measured along inner edge 30 . As explained in greater detail below, this spacing between valve head 5 and marginal flange 4 permits valve head 5 to shift freely in an axial direction through the center of marginal flange 4 .
- the connector sleeve portion 7 illustrated in FIGS. 4-6 is in the form of a rolling diaphragm, having a hollow circular plan configuration, and a generally J-shaped longitudinal cross-sectional shape, comprising a cylindrical sidewall portion 45 , and a radially outwardly extending base portion 46 .
- Connector sleeve 7 has interior and exterior surfaces 47 and 48 respectively, which are spaced equidistantly apart along the length thereof, such that connector sleeve 7 has a substantially uniform thickness.
- One end portion 49 of connector sleeve 7 is connected with the exterior surface 38 of valve head 5 adjacent the marginal edge 42 thereof, and the opposite end portion 50 of connector sleeve 7 is connected with the inner edge 30 of marginal valve flange 4 .
- connector sleeve 7 adjacent end 49 is positioned substantially coplanar and contiguous with the marginal edge 42 of valve head 5 , while the opposite end 50 of connector sleeve 7 is connected with marginal valve flange 7 at a medial portion of inner edge 30 , such that the base portion 46 of connector sleeve 7 flares in a radially inwardly direction from marginal valve flange 46 , and also protrudes outwardly toward the exterior of dispensing package 1 at an arcuate portion 51 of connector sleeve 7 .
- connector sleeve portion 51 assists connector sleeve 7 in first doubling over, and then rollingly extending as valve head 5 shifts outwardly in the manner described in greater detail below.
- the marginal attachment point of end 49 of connector sleeve 7 to valve head 5 increases the effectiveness of torque forces which assist in snapping valve 3 open, as discussed hereinafter.
- the exterior surface 48 of sleeve side wall 45 at end 49 of connector sleeve 7 intersects the exterior surface 38 of valve head 5 at an angle which defines a circular edge 52 .
- the exteriormost area of sleeve arcuate portion 51 is disposed substantially in-line with or slightly interior of the bottom 32 of marginal flange 4 , so as to facilitate fabrication.
- the length of connector sleeve 7 is preferably selected sufficiently short to prevent the same from folding in behind valve head 5 when valve head 5 is in the fully extended position ( FIGS. 10-14 ), thereby avoiding interference with the retraction of valve head 5 , which is explained in detail below.
- the illustrated one-piece valve 3 has a hat-shaped side elevational configuration in its original, normal condition, wherein valve head 5 assumes a generally concave shape.
- the resilient flexibility of connector sleeve 7 permits the same to double over and then extend rollingly in the manner described hereinafter.
- Connector sleeve 7 acts as a rolling diaphragm with valve head 5 mounted at the center thereof in a manner which permits valve head 5 to shift or float freely inwardly and outwardly in an axial direction with respect to the opening 21 in container neck 20 .
- discharge orifice 6 has a cross-slit construction which includes two, intersecting linear slits 55 and 56 that extend through the opposite sides 38 and 39 of center portion 41 .
- the illustrated slits 55 and 56 are oriented in a mutually perpendicular relationship, and have their opposite ends 55 a and 55 b positioned slightly inwardly from the outer edge 44 of center portion 41 .
- Orifice slits 55 and 56 define four flaps or pedals 57 which flex inwardly and outwardly to selectively permit the flow of fluid product through valve 3 .
- Slits 55 and 56 are preferably formed by slicing through the center portion 41 of valve head 5 , without removing any substantial amount of material therefrom, so that the opposite side faces 58 and 59 ( FIGS. 13 & 14 ) of valve flaps 57 closely seal against one another when discharge orifice 6 is in its normally, fully closed position.
- the length and location of slits 55 and 56 can be adjusted to vary the predetermined opening and closing pressures of valve 3 , as well as other dispensing characteristics of dispensing package 1 .
- the side faces 58 and 59 of each valve flap 57 intersect at their free ends to define an end edge 60 . That portion of valve head 5 disposed between marginal portion 40 , marginal edge 42 , slit ends 55 a and 55 b , and exterior surface 38 defines a ring portion 61 of the valve head 5 , which functions in the manner described in detail hereinafter.
- orifice 6 may assume many different shapes, sizes and/or configurations in accordance with those dispensing characteristics desired.
- orifice 6 may comprise a single slit, particularly when smaller or narrower streams are desired.
- Orifice 6 may also include three or more slits, particularly when larger or wider streams are desired, and/or the fluid product contains aggregates, such as some types of salad dressings, and the like.
- Other forms of orifice 6 such as holes, duck bills, etc. may also be incorporated into valve 3 .
- Self-sealing dispensing valve 3 is preferably especially configured for use in conjunction with a particular container 2 , and a specific type of fluid product, so as to achieve the exact dispensing characteristics desired.
- the viscosity and density of the fluid product are both important factors in designing the specific configuration of valve 3 , as is the shape, size, and strength of container 2 , particularly when dispensing package 1 is configured for bottom dispensing.
- the rigidity and durometer of the valve material, and size and shape of both valve head 5 and connector sleeve 7 are also important in achieving the desire dispensing characteristics, and should be carefully matched with both the container 2 and fluid material 18 to be dispensed therefrom.
- One working embodiment of the present invention is particularly designed to dispense fluid household products therefrom, such as dishwasher detergents, liquid soap, moisturizing creams, foodstuffs, and the like.
- fluid product materials such as dishwasher detergents, liquid soap, moisturizing creams, foodstuffs, and the like.
- one specific valve 3 found to be particularly suited is as follows.
- the outside and inside diameters of marginal valve flange 4 are 0.7000 and 0.5802 inches respectively, while the outside diameter of the marginal edge 42 of valve head 5 is 0.4391 inches, and the outside diameter of center portion 41 is around 0.2212 inches.
- the thickness of connector sleeve 7 is approximately 0.0130 inches, and has an overall height, as measured from the bottom 32 of marginal flange 4 to the edge 52 of valve head 5 , of 0.1159 inches.
- the radius of valve head exterior surface 38 is 0.2900 inches, while the radius of the marginal portion 40 of interior surface 39 is 0.0350 inches.
- the total thickness of valve head 5 at marginal edge 42 is around 0.0778 inches and around 0.0530 inches at the middle of center portion 41 .
- the overall height of valve 3 as measured from the bottom 32 of marginal flange 4 to the top of center portion 41 is approximately 0.2402 inches.
- Slits 55 and 56 have a length of around 0.2200 inches, and are centered squarely in valve center portion 41 .
- the valve is molded integrally from a liquid silicone rubber of the type manufactured under the trademark “SILASTIC LSR” by Dow Corning Corporation.
- valve 3 snaps open when exposed to a pressure inside container 2 equal to approximately 25-28 inches of water. That pressure which causes valve 3 to snap open is generally referred to herein as the predetermined dispensing or opening pressure. Valve 3 will automatically snap closed when the interior pressure of container 2 drops below a pressure equal to approximately 16-18 inches of water. That pressure which causes valve 3 to snap closed is generally referred to herein as the predetermined. closing pressure. While the noted valve 3 is open, a substantially constant flow or stream of fluid product is discharged through orifice 6 , even when extra pressure is exerted on container 2 .
- valve 3 may assume many different shapes and sizes, particularly in keeping with the type of container 2 and fluid product to be dispensed therefrom.
- the predetermined opening and closing pressures of valve 3 may be varied widely in accordance with those dispensing criteria desired for a particular product.
- Flow characteristics of the dispensed fluid product can also be adjusted substantially, such as for relatively wide column-like streams, thin needle-like streams, dollops, and the like.
- dispensing package 1 functions in the following manner.
- Valve 3 normally assumes the inwardly protruding orientation illustrated in FIG. 7 , wherein valve 3 remains substantially in its original molded shape without deformation, with connector sleeve 7 being fully retracted and discharge opening 6 being fully closed.
- valve 3 is configured such that discharge orifice 6 will remain securely closed, even under the hydraulic head pressure applied thereto by the fluid product 18 when the container 2 is completely full.
- connector sleeve 7 When additional pressure is communicated with the interior of container 2 , such as by manually flexing container sidewalls 14 and 15 inwardly, connector sleeve 7 functions as a rolling diaphragm, and permits valve head 5 to begin shifting axially outwardly toward the exterior of dispensing package 1 by doubling over connector sleeve 7 , which then in turn, begins to extend outwardly in a rolling fashion, as illustrated in FIG. 8 .
- the outwardly protruding J-shaped configuration of connector sleeve 7 assists in initiating this rolling motion of connector sleeve 7 .
- the elastic deformation of connector sleeve 7 from its original molded shape FIG.
- valve 7 generates a complex pattern of stresses within valve 3 which resiliently urges the same back into its original or normal configuration, which forces include an outwardly directed torque applied by connector sleeve 7 to valve head 5 adjacent marginal edge 42 , which tends to resiliently urge discharge orifice 6 toward its open position, as described in greater detail below.
- valve head 5 When additional pressure is communicated with the interior of container 2 , as illustrated in FIG. 9 , valve head 5 continues to shift axially outwardly by rolling connector sleeve 7 over upon itself. The marginal edge 42 of valve head 5 passes through the center of marginal valve flange 4 .
- valve head 5 When additional pressure is communicated with the interior of container 2 , valve head 5 continues to extend outwardly toward the exterior of dispensing package 1 until connector sleeve 7 is fully extended, as illustrated in FIG. 10 .
- the stress forces built up in connector sleeve 7 cause the sidewall portion 45 of the connector sleeve 7 to assume a generally cylindrical shape concentric with and about the marginal edge 42 of valve head 5 .
- Sidewall 45 of connector sleeve 7 is folded back 180 degrees from its original molded shape, to an orientation parallel with the marginal edge 42 of valve head 5 , and defines an exterior lip or rim 65 .
- valve head 5 When additional pressure is communicated with the interior of container 2 , as illustrated in FIG. 11 , valve head 5 continues to shift outwardly. However, since connector sleeve 7 is fully extended, further outward shifting of valve head 5 longitudinally tenses or stretches connector sleeve 7 , thereby increasing the outwardly directed torque applied to the valve head 5 . Also, the further outward movement of valve head 5 tends to flatten or straighten valve head 5 , particularly along the exterior surface 38 thereof, as best illustrated in FIG. 11 .
- valve head 5 This flattening motion tends to enlarge or dilate the circular plan configuration of valve head 5 , which enlargement is in turn resisted by radially inwardly directed forces applied to the marginal edge 42 of valve head 5 by connector sleeve 7 , thereby generating another complex pattern of stresses within valve 3 , which forces include those which tend to compress valve head 5 in a radially inward direction. Due to the tapered shape of valve head 5 , the majority of compression strain is believed to take place adjacent the center portion 41 of valve head 5 . As best illustrated by a comparison of the broken line figure and the full line figure provided in FIG.
- valve head 5 When additional pressure is communicated with the interior of container 2 , as illustrated in FIG. 12 , valve head 5 continues to shift outwardly by further longitudinal stretching of connector sleeve 7 , and further enlargement of the plan shape of valve head 5 .
- This motion is best illustrated by a comparison of the broken line figure and the full line figure provided in FIG. 12 .
- Exterior rim 65 moves from the condition illustrated in FIG. 11 , which corresponds to the broken line figure of FIG. 12 , in an axially outwardly and radially outwardly fashion to the position shown in the full lines of FIG. 12 .
- the marginal edge 42 of valve head 5 is shown more bent or elastically deformed inwardly, as a consequence of the increased torque forces applied thereto by connector sleeve 7 .
- valve head 5 into a state of bifurcation, as illustrated in FIG. 12 , wherein the combined forces acting on valve head 5 will, upon application of any additional outward force on the interior side 39 of valve 3 , cause the same to quickly open outwardly with a snapping motion to separate valve flaps 57 in the manner illustrated in FIGS. 13 and 14 , and thereby dispense liquid product through discharge orifice 6 .
- the bifurcation state of valve 3 is illustrated in FIG. 12 , and defines a relatively unstable condition which valve 3 assumes immediately prior to opening into the fully open condition shown in FIGS. 13 and 14 . As valve 3 passes through the bifurcation state shown in FIG.
- valve head 5 assumes the shape of a nearly planar disc, with exterior surface 38 cupped inwardly between rim 65 and flap edges 60 , and interior surface 39 bent slightly outwardly toward the center of orifice 6 .
- valve 3 The snap type opening of valve 3 is achieved, at least in part, by the torque exerted on valve head 5 by connector sleeve 7 , which as noted in the example illustrated in FIG. 12 , is sufficient to substantially distort the shape of the marginal edge 42 of valve head 5 .
- valve flaps 57 When valve 3 assumes the fully extended and fully open position illustrated in FIGS. 13 and 14 , valve flaps 57 , as well as the associated rim portion 61 of valve head 5 are bent or elastically deformed outwardly, thereby permitting the rim 65 of valve head 5 to become smaller or constrict slightly.
- Valve flaps 57 tend to fold openly along lines extending between the ends 55 a and 55 b or orifice slits 55 and 56 .
- valve head 5 The continued radial inwardly compression applied to valve head 5 by connector sleeve 7 , in addition to the outwardly oriented torque applied thereto by connector sleeve 7 , combine to keep discharge orifice 6 in the fully open position, even if the pressure communicated with the interior of container 2 is reduced. Hence, after discharge orifice 6 has been opened through the application of the predetermined opening pressure, that pressure which is required to maintain fluid flow through orifice 6 is reduced, or less than the threshold pressure, so as to provide greater dispensing ease and flow control.
- connector sleeve 7 serves to resist the dilating action of valve head 5 , and thereby compresses the same to achieve a snap open/snap close motion
- the amount or degree of snap action can be thereby adjusted for any specific application.
- the resilient strength of ring 61 can be adjusted to accomplish the desired snap action.
- valve flaps 57 open valve flaps 57 to a generally predetermined configuration, such that the rate of flow through discharge orifice 6 remains substantially constant, even though significant pressure differences are applied to container 2 .
- valve 3 passes through the bifurcation state shown in FIG. 12 , in the direction of opening, it quickly and positively assumes the fully open condition shown in FIGS. 13 and 14 , wherein the end edges 60 of valve flaps 57 diverge radially outwardly, such that discharge opening 6 assumes a star shaped plan configuration, as best seen in FIG. 14 .
- valve head 5 rotates or pivots inwardly somewhat under the pressure of fluid product 18 , and the resilient torque applied thereto by connector sleeve 5 , which continues to resiliently urge valve 3 back toward its original molded shape ( FIG. 7 ).
- Connector sleeve 7 remains tensed both axially and circumferentially under outwardly directed forces generated by the pressures within container 2 , as well as the dynamic flow of fluid product through orifice 6 .
- the geometry of the illustrated valve 3 particularly in the shape of valve head 5 and connector sleeve 7 , serve to force valve 3 into the configuration shown in FIGS. 13 and 14 whenever orifice 6 is snapped opened.
- discharge orifice 6 When pressure within the interior of container 2 is reduced, discharge orifice 6 will still remain open in substantially the fully open position shown in FIGS. 13 and 14 , until the pressure reaches the preselected closure pressure, at which point, the forces developed in connector sleeve 7 through elastic deformation from its original molded shape ( FIG. 7 ), pull valve head 5 inwardly, back through the bifurcation state, and into the concave orientation shown in FIG. 10 , thereby positively and securely closing discharge orifice 6 with a snapping action, similar to that action by which discharge orifice 6 opened.
- valve head 5 serves to close orifice 6 very quickly and very completely, so as to sharply cut off the stream of fluid product being dispensed from package 1 without any drops or dribbles, even when very viscous and/or dense products are being dispensed.
- Valve 3 will continue to assume the fully closed, fully extended position illustrated in FIG. 10 , until such time as the interior pressure in container 6 is further reduced, so as to permit the resiliency in connector sleeve 7 to shift valve head 5 back into the fully retracted, initial position illustrated in FIG. 7 .
- valves 3 contemplated by the present invention have a relatively high predetermined closing pressure, such as in the nature of 17-18 inches of water, so that orifice 6 will snap securely closed even if container 2 does not provide any suck back, or negative pressure.
- the connector sleeve 7 of at least some such valves 3 is constructed to provide sufficient resiliency to automatically shift valve head 5 back to the fully retracted position ( FIG. 7 ) without any suck back or negative pressure from container 2 .
- valves 3 can be readily adapted for use in conjunction with containers which include collapsing bags, tubes or the like.
- valves 3 are particularly adapted for bottom dispensing packages, such as those illustrated in FIGS. 1-3 , where valve 3 normally supports a column of liquid product.
- container 2 will be designed with relatively stiff sidewalls 14 and 15 which resume their original shape after being squeezed.
- the suck back of air into container 2 after dispensing fluid product therefrom is typically desired to prevent collapsing the container 2 , and thereby facilitate continued ease of dispensing until container 2 is completely empty.
- valve 3 When valve 3 is in the fully closed and fully retracted position ( FIG. 9 ), the concave configuration of valve head 5 permits orifice 6 to readily open inwardly so that air can be sucked back into the interior of container 2 , yet positively prevents orifice 6 from opening outwardly in a manner which would permit leakage.
- valve 3 even relatively weak, thin walled containers 2 can be used with valve 3 without significant. collapsing of container sidewalls 14 and 15 .
- dispensing package 1 may be provided with a positive closure arrangement to prevent inadvertent discharge when dispensing package 1 is being transported, or the like, such as for initial shipping, travel, etc.
- the dispensing package 1 shown in FIG. 15 includes a sliding closure 70 , which when closed, physically blocks the outward rolling extension of connector sleeve 7 and associated valve head 5 .
- valve head 5 By constraining the outwardly extending motion of connector sleeve 7 , valve head 5 is prevented from inverting into a convex configuration, and thereby keeps discharge orifice 6 fully closed.
- closure 70 is slid sideways out from underneath valve 3 , valve 3 is then free to reciprocate and open orifice 6 to dispense liquid product from container 2 .
- FIG. 16 is a partially schematic view of an alternative closure arrangement for dispensing package 1 , wherein a removable cap 71 is provided for detachable connection with retainer ring 23 by conventional fastener means, such as a snap lock, hinge, etc. (not shown).
- the illustrated cap 71 has a generally flat exterior surface 72 , an interior surface 73 , and a cylindrical sidewall 74 , which is sized and shaped such that interior cap surface 73 abuts the rim 65 of valve 3 when valve head 5 is in its fully extended position.
- cap interior surface 73 includes an inwardly projecting protuberance 75 , which in the illustrated example, is generally in the form of a convex, semi-spherical node that extends inwardly toward valve 3 to a position adjacent to the cupped exterior surface 38 of valve 3 .
- Node 75 is shaped to positively retain valve head 5 in a concave configuration, and thereby securely maintain orifice 6 fully closed.
- valve head 5 on rolling connector sleeve 7 provides dispensing package 1 with several important advantages.
- connector sleeve 7 is preferably configured with sufficient flexibility that abnormal pressure increases developed within the interior of container 2 , such as those caused by thermal expansion, or the like, are offset by the axial shifting motion of valve head 5 with respect to connector sleeve 7 , so as to alleviate excess pressure on discharge orifice 6 .
- valve head 5 shifts axially outwardly to relieve any such pressure, and thereby prevent any inadvertent leakage of the fluid product from dispensing package 1 .
- connector sleeve 7 is preferably configured with sufficient flexibility that any misalignment and/or distortion of the valve flange 4 , such as that experienced when attaching the valve to container 2 , are not transmitted to valve head 5 , thereby permitting unhindered operation of discharge orifice 6 .
- any misalignment and/or distortion of the valve flange 4 such as that experienced when attaching the valve to container 2
- valve head 5 thereby permitting unhindered operation of discharge orifice 6 .
- the attachment of valves constructed from the same to a container 2 can be quite difficult, and often results in some type of unequal compression and/or distortion of the marginal flange 4 of valve 3 .
- any such distortion is communicated directly to the valve head 5 , which in turn distorts discharge orifice 6 , and alters important design characteristics such as its predetermined opening pressure, closing pressure, flow rate, etc.
- the rolling diaphragm connector sleeve 7 associated with the present valve 3 tends to insulate or isolate valve head 5 from marginal flange 7 , such that it can float freely, and thereby avoid such problems.
- connector sleeve 7 is preferably configured with sufficient flexibility that vibrations, shock impact forces, and the like applied to container 2 are absorbed and/or dampened by shifting valve head 5 on rolling connector sleeve 7 , so as to avoid inadvertent opening of discharge opening 6 .
- dispensing package 1 is dropped onto the floor, slammed forcefully against a worksurface, or otherwise jarred or shook, the shock forces arising from the acceleration and/or deceleration of the fluid product within container 2 would otherwise be communicated directly with the discharge orifice 6 , and tend to cause it to open inadvertently.
- valve 3 serves as a cushion or shock absorber for such shock impact forces, and thereby greatly alleviates the chance for the inadvertent discharge of fluid product from dispensing package 1 .
- connector sleeve 7 assists in absorbing these vibrations, and thereby prevent leakage.
- connector sleeve 7 is preferably configured with sufficient flexibility that only very moderate pressures, substantially lower than the predetermined opening pressure of valve 3 , are required to shift valve head 5 from the fully retracted position ( FIG. 7 ) to the fully extended position ( FIG. 10 ), thereby improving the dispensing “feel” of the package 1 .
- connector sleeve 7 is preferably configured with sufficient flexibility that only very moderate pressures, substantially lower than the predetermined opening pressure of valve 3 , are required to shift valve head 5 from the fully retracted position ( FIG. 7 ) to the fully extended position ( FIG. 10 ), thereby improving the dispensing “feel” of the package 1 .
- valve head 5 halts momentarily and further movement of the fluid product is resisted until additional forces are exerted on container 2 which result in an internal pressure within container 2 greater than the predetermined opening pressure of valve 3 .
- This motion of connector sleeve 7 and valve head 5 is sensed by the user through touch or feel, typically in the form of a vibration or ripple experienced in container sidewalls 14 and 15 when valve head 5 reaches the fully extended position ( FIG. 10 ).
- This ripple motion signals the user that valve head 5 is fully extended, and that further pressure will cause valve 3 to snap open and dispense fluid product.
- valve 3 snaps open and snaps closed, similar vibrations or ripples are communicated to the user through container sidewalls 14 and 15 to assist in achieving accurate flow control.
- valve 3 is mounted within container 2 in a manner which causes valve head 5 to shift between the fully retracted position shown in FIG. 7 wherein valve 3 is disposed wholly within the interior of container 2 for safely storing valve 3 , and the fully extended discharge position shown in FIGS. 13 and 14 wherein valve head 5 and associated orifice 6 are disposed wholly outside container 2 for neatly dispensing the fluid product therethrough.
- valve head 5 By shifting valve head 5 between these two extreme positions, valve 3 can remain normally unexposed and secure within the container 2 when not in use, without sacrificing neatness when dispensing.
- valve 3 is preferably positioned in container 2 so that the arcuate portion 51 of connector sleeve 7 is disposed adjacent the bottom 25 of container base 13 , so that if dispensing package is slammed down onto a surface, abutment between valve 3 and the surface will prevent valve 3 from shifting to the fully extended position, and thereby keep orifice 6 closed to prevent inadvertent leakage.
- Dispensing package 1 is extremely versatile, being capable of easily and neatly dispensing a wide variety of fluid products.
- the self-sealing valve 3 is matched with both the container 2 and the type of liquid product 18 to be dispensed therefrom, so as to quickly and securely seal, yet readily open upon manipulation by the user, without requiring excess pressure or forces.
- the resiliently flexible connector sleeve 7 which is configured to double over and extend rollingly, accommodates for thermal expansion within container 2 , absorbs shock impact forces to the container, accommodates for any misalignment and/or distortion which might be applied to the valve flange in attaching the same to the container, and provides a unique dispensing feel which greatly facilitates accurate dispensing.
- Valve 3 is configured so that when orifice 6 snaps open, a generally constant flow rate is established therethrough, even when container 2 is subjected to a relatively wide range of pressures. Valve 3 is also preferably configured such that once discharge orifice 6 is open, the amount of pressure required to maintain fluid flow is reduced, so as to provide greater ease of operation and control, without sacrificing secure sealing. Dispensing package 1 is particularly adapted for bottom dispensing configurations, shake containers, and other similar packaging concepts, without leakage.
- the reference numeral la ( FIGS. 20-23 ) generally designates another dispensing package embodying the present invention, which is particularly adapted for dispensing product from the top of the associated container 2 a . Since dispensing package 1 a is similar to the previously described dispensing package 1 , similar parts appearing in FIGS. 1-16 and FIGS. 17-23 respectively are represented by the same, corresponding reference numeral, except for the suffix “a” in the numerals of the latter.
- the illustrated container 2 a ( FIG. 20 ) is particularly designed for top dispensing, and includes a generally flexible, oblong container body that may be integrally molded from an appropriate synthetic resin material or the like, so as to create a one-piece construction that includes oppositely oriented sidewalls 14 a and 15 a , a top 16 a , and a bottom 17 a .
- the container sidewalls 14 a and 15 a are laterally flexible to pressurize and depressurize the interior of container 2 a , and preferably have sufficient resiliency or stiffness that they automatically return to their original shape upon release of any external forces which are applied to container 2 a to dispense a fluid product 18 a therefrom.
- the illustrated container top 16 a ( FIGS. 20-21 ) includes a neck 20 a , which is normally in an upwardly opening orientation when not dispensing, and defines a discharge opening 21 a about which the marginal portion 4 a of dispensing valve 3 a is positioned.
- the free end of neck 20 a includes an annularly shaped groove 22 a having a generally L-shaped longitudinal, cross-sectional configuration, which is shaped to closely receive the marginal portion 4 a of valve 3 a therein.
- a valve retainer ring 23 a is positioned adjacent groove 22 a , and is attached to the neck 20 a of container 2 a by a snap lock arrangement.
- Container base 17 a has a substantially flat, annularly shaped outer bottom 25 a adapted to abuttingly support dispensing package 1 a upright on an associated surface, such as a countertop, sink, worksurface, or the like.
- dispensing valve 3 a is positioned in a generally extended condition within dispensing package 2 a , as opposed to the generally recessed condition of valve 3 in dispensing package 1 ( FIGS. 1-17 ), as described hereinabove.
- the illustrated dispensing valve 3 a is generally similar to previously described dispensing valve 3 , and comprising a marginal portion 4 a , a head portion 5 a with a discharge orifice 6 a therein, and a connector sleeve 7 a , having one end connected with marginal portion 4 a , and the opposite end connected with head portion 5 a .
- Connector sleeve 7 a has a resiliently flexible construction, such that when pressure within container 2 a is raised above a predetermined amount, the head portion 5 a of valve 3 a shifts outwardly as shown in FIGS. 22 and 23 , so as to dispense fluid product 18 a therefrom.
- the connector sleeve 7 a of dispensing valve 3 a does not double over and extend rollingly, but simply shifts outwardly to apply opening forces to valve head 5 a in a manner which causes orifice 6 a to snap open, as described in greater detailed hereinafter.
- the flange or marginal portion 4 a ( FIGS. 17-19 ) of the illustrated dispensing valve 3 a has an annular shape, with a substantially triangular cross-sectional configuration, comprising an upper edge 30 a , an outer edge 31 a , and a bottom edge 32 a .
- the marginal portion 4 a of valve 3 a has a thickness between top and bottom edges 30 a and 32 a which is resiliently compressed upon attachment of retainer ring 23 a to form a secure leak resistant seal therebetween.
- valve head 5 a ( FIGS. 17-19 ) of the illustrated dispensing valve 3 a has a circular plan shape, and a generally tapered construction which is thicker at the radial outside portion of valve head 5 a , and thinner at the radial inside portion thereof. This tapered construction assists in achieving the snap open/snap close action of valve 3 a , as described below. More specifically, in the illustrated example, valve head 5 a has an exterior side or surface 38 a , which has an arcuately shaped side elevational configuration that opens outwardly, toward ambient environment, and is defined by a first predetermined radius. Valve head exterior surface 38 a extends continuously between the exterior sidewalls of connector sleeve 7 a .
- Valve head 5 a also includes an interior side or surface 39 a , which has a marginal portion 40 a with an arcuately shaped side elevational configuration which curves inwardly, toward the interior of dispensing package 1 a , and is defined by a second predetermined radius.
- the radius of marginal portion 40 a on interior surface 39 a is larger than that of exterior surface 38 a , such that the two surfaces converge toward the center of valve head 5 a at or adjoining orifice 6 a , and provide the above-noted inwardly tapered construction of valve head 5 a .
- valve head 5 a also includes a center portion 41 a , which has a circular plan shape, with a substantially planar or flat side elevational configuration, oriented generally perpendicularly to discharge orifice 6 a .
- the center portion 41 a of valve head 5 a assists in improving the opening and closing characteristics of valve 3 a , as set forth below.
- Valve head 5 a has a circular marginal edge 42 a , which begins at the outer edge 43 a of marginal portion 40 a , and extends outwardly therefrom with a slight taper, ultimately merging into connector sleeve 7 a .
- Marginal edge 42 a of valve head 5 a is spaced radially inwardly of the adjacent upper portion of connector sleeve 7 a .
- the inner section of marginal portion 40 a and center portion 41 a of head portion 5 a define a circular edge 44 a.
- the connector sleeve portion 7 a of the illustrated dispensing valve 3 a has a generally J-shaped longitudinal cross-sectional shape, comprising an annular base portion in the form of a first leg portion 46 a , and a radially inwardly cylindrical sidewall portion in the form of a second leg portion 45 a .
- Connector sleeve 7 a has interior and exterior surfaces 47 a and 48 a respectively, which are spaced equidistantly apart along the length thereof, such that connector sleeve 7 a has a substantially uniform thickness.
- One end 49 a of connector sleeve 7 a is connected with the head portion 5 a of valve 3 a
- the opposite end 50 a of connector sleeve 7 a is connected with the marginal portion 4 a of valve 3 a
- the first and second leg portions 46 a and 45 a of connector sleeve 7 a are mutually oriented at an acute included angle, as measured between the exterior surfaces of connector sleeve legs 46 a and 45 a , and noted by the Greek letter theta (“.theta.”) in FIG. 19 .
- the connector sleeve leg portions 46 a and 45 a join one another at an arcuate portion 51 a , which facilitates movement of the head portion 5 a of valve 3 a when dispensing product from the container 2 a.
- the first leg portion 46 a of connector sleeve 7 a is shorter than the second leg portion 45 a , and the included angle between them is in the range of 65-85 degrees. Also, the first leg portion 46 a of connector sleeve 7 a is oriented at an acute angle relative to the axial centerline of the head portion 5 a , which extends through slit 56 a .
- the outer edge 42 a of valve 3 a is generally flat, and oriented substantially parallel with the axial centerline of head portion 5 a .
- the second leg portion 45 a of connector sleeve 7 a is oriented at an acute angle to the axial centerline of head portion 5 a , at an angle in the range of 2-10 degrees.
- the connector sleeve 7 a of the illustrated dispensing valve 3 a has an inverted J-shaped end portion 49 a at the top of leg portion 46 a , which extends arcuately into the head portion 5 a of valve 3 a to further facilitate movement of the head portion 5 a when dispensing product from the container 3 a .
- the outer edge 42 a of valve head 5 a is spaced apart from the inside surface of the upper end of connector leg 45 a . This spacing between valve head 5 a and connector sleeve 7 a assists in applying torque to valve head 5 a when dispensing product from the associated container in the manner described in detail thereinafter.
- the inverted J-shaped end portion 49 a of connector sleeve leg portion 45 a loops around approximately 180 degrees to attach to valve head portion 5 a adjacent the outer margin of exterior surface 38 a.
- dispensing package 1 a functions in the following manner.
- Valve 3 a normally assumes the outwardly protruding orientation illustrated in FIG. 20 , wherein valve 3 a remains substantially in its original molded shaped without deformation, with a major portion of connector sleeve 7 a as well as head portion 5 a protruding outwardly from snap ring 23 a .
- valve 3 a is mounted in the top of container 2 a , as shown in the illustrated top dispensing package 1 a , valve 3 a is not normally subjected to the hydraulic head pressure applied thereto by the fluid product 18 a.
- the user To dispense product 18 a from package 1 a , the user first inverts container 2 a to the upside down orientation illustrated in FIGS. 21-23 .
- discharge orifice 6 a is positioned directly over or aligned with the location at which the fluid product 18 a is to be dispensed. Additional pressure is then communicated with the interior of container 2 a , such as by manually flexing container sidewalls 14 a and 15 a inwardly.
- Connector sleeve 7 a permits the head portion 5 a of valve 3 a to begin shifting axially outwardly toward the exterior of dispensing package 1 a , as illustrated in FIG. 22 .
- the J-shaped configuration of connector sleeve 7 a assists in permitting the axial shifting of valve head portion 5 a .
- the elastic deformation of connector sleeve 7 a from its original molded shape generates a complex pattern of stresses within valve 3 a which resiliently urges the same back into its original or normal configuration, which forces include an outwardly directed torque applied by connector sleeve 7 a to head portion 5 a , which tends to resiliently urge discharge opening 6 toward its open position.
- valve head portion 5 a of valve 3 a When additional pressure is communicated with the interior of container 2 a , the head portion 5 a of valve 3 a continues to shift outwardly by further longitudinal stretching of connector sleeve 7 a , and further enlargement of the plan shape of valve head 5 a to snap open to the fully open position illustrated in FIG. 23 in a manner similar to that described in detail hereinabove with respect to dispensing valve 1 . Since the upper end of the second leg portion 45 a is attached to head portion 5 a adjacent its outer surface 38 , a torque is applied to head portion 5 a as the same shifts axially outwardly which tends to snap orifice 6 a open. The inverted J-shaped portion 49 a of second leg portion 45 a assists in effectively applying these opening forces to valve head portion 5 a.
- the reference numerals 3 b ( FIG. 24 ), 3 c ( FIG. 25 ), 3 d ( FIG. 26 ), 3 e ( FIG. 27 ) and 3 f ( FIGS. 28-29 ) generally designate additional alternate embodiments of the present invention, that have slightly different dispensing valve configurations. Since dispensing valves 3 b - 3 f are similar to the previously described dispensing valves 3 and 3 a , similar parts appearing in FIGS. 1-23 and 24 - 29 respectively are represented by the same, corresponding reference numeral, except for the suffixes “b”-“f” respectively in the reference numerals of the later.
- Dispensing valves 3 b - 3 f are each specifically designed for top dispense containers, similar to the previously described dispensing valve 3 a , and operate in a similar manner. More specifically, dispensing valve 3 b is similar to dispensing valve 3 a , except that the interior head portion surface 40 b of dispensing valve 3 b is completely arcuate, and lacks the circular center portion 41 a of dispensing valve 3 a . The radius of interior valve head surface 40 b is greater than that of the exterior valve head surface 38 b , such that valve head 5 b has a tapered configuration, which is thinner at discharge orifice 6 b.
- Dispensing valve 3 c is similar to dispensing valve 3 b , except that the opposite surfaces 40 c and 38 c of valve head 5 c are parallel, and of the same radius, such that head portion 5 c has a substantially uniform thickness.
- Dispensing valve 3 d is similar to valve 3 c , except that the upper end of connector sleeve 7 d attaches directly to the associated head portion 5 d , without the inverted J-shape 49 c of valve 3 c .
- Dispensing valve 3 e is similar to valve 3 a , except that the upper end of connector sleeve 7 e attaches directly to head portion 5 e , without the inverted J-shape 49 a of valve 3 a .
- Dispensing valve 3 f is similar to valve 3 a , except that the interior surface 40 f of head portion 5 f has a square shape adjacent orifice 6 a , instead of the circular shape 44 a of valve 3 a.
- the reference numerals 3 g ( FIG. 30 ), 3 h ( FIG. 31 ) and 3 i ( FIG. 32 ) generally designate additional alternate dispensing valves embodying the present invention. Since dispensing valves 3 g - 3 i are similar to the previously described dispensing valves 3 - 3 f , similar parts appearing in FIGS. 30-32 are represented by the same, corresponding reference numeral, except for the suffixes “g”-”l” respectively in the reference numerals of the later. Dispensing valves 3 g - 3 i are each specifically designed for bottom dispense packaging, similar to valve 3 , and operate in a similar manner.
- dispensing valve 3 g is similar to previously described valve 3 , except that the opposite surfaces 38 g and 40 g of valve head 5 g are frustoconical, and taper to center circular areas 80 and 81 adjacent discharge orifice 6 g .
- Dispensing valve 3 h is similar to previously described dispensing valve 3 g , except that the opposite surfaces 38 h and 40 h of head portion 5 h intersect at discharge orifice 6 h , such that they lack the circular areas 80 and 81 of dispensing valve 3 g .
- Dispensing valve 3 i is similar to previously described dispensing valve 3 h , except that the exterior surface 40 i of head portion 5 i is flat and oriented generally perpendicular to the central axis of the valve 3 i.
Abstract
A dispensing valve is provided for dispensing fluid products. The valve includes a marginal portion, a flexible valve head portion with a discharge orifice therein, and a flexible connector sleeve having one end connected with the valve marginal portion and the opposite end connected with the valve head portion adjacent a marginal edge thereof.
Description
- The present application is a continuation of commonly assigned, co-pending U.S. patent application Ser. No. 10/180,746, filed Jun. 26, 2002, entitled “DISPENSING VALVE,” (Parent Application), which is a continuation of Ser. No. 09/812,129, filed Mar. 19, 2001, entitled “DISPENSING VALVE,” now U.S. Pat. No. 6,427,874 (Grandparent Application), which is a continuation of Ser. No. 08/886,567, filed Jul. 1, 1997, entitled “DISPENSING PACKAGE,” now U.S. Pat. No. 6,279,783 (Great Grandparent Application), which is a continuation of Ser. No. 08/508,472, entitled “DISPENSING PACKAGE,” filed Jul. 28, 1995, now U.S. Pat. No. 5,839,614, (Great Great Grandparent Application), which is a continuation-in-part of Ser. No. 08/240,264, filed May 10, 1994, entitled “DISPENSING PACKAGE,” now U.S. Pat. No. 5,439,143 (Great Great Great Grandparent Application), which is a continuation of Ser. No. 08/39,896, filed Mar. 30, 1993, now U.S. Pat. No. 5,339,995 (Great Great Great Great Grandparent Application), which is a continuation of Ser. No. 08/804,086, filed Dec. 6, 1991, now U.S. Pat. No. 5,213,236 (Great Great Great Great Great Grandparent Application).
- The present invention relates to product packaging, and in particular to a self-sealing valve for fluid products, and the like.
- Many different types of packages or containers are presently available for packaging non-solid products of the type which are capable of flowing, such as fluid or fluidized materials, including liquids, pastes, powders, and the like, which substances are collectively and generically referred to herein as “fluids”. Some such packages include a dispenser which. permits a selected amount of fluid to be discharged from the package, and then reseals to close the package.
- Self-sealing dispensing valves have been used in packaging for certain types of products, such as the container disclosed in U.S. Pat. No. 4,728,006 to Drobish et al, which is designed for shampoos, conditioners, and the like. However, such valves have been known to experience some types of sealing problems, and inconsistent dispensing characteristics, particularly when the packages are exposed to significant temperature variations.
- Valves constructed from most conventional plastic materials cannot be used in at least certain types of packages, since they either react with or adulterate the product. For instance, in food packaging, care must be taken to avoid the use of valve materials which might contain any type of toxin. Furthermore, active ingredients in products can cause the valve to either embrittle or soften, thereby ruining the designed flow rate and/or self-sealing characteristics of the valve.
- Liquid silicone rubber valves have recently been used in some types of packaging, and have proven particularly advantageous since the material is inherently quite inert, and will therefore not either adulterate or react with the packaged product. Examples of such packaging are provided in applicant's U.S. Pat. No. 5,033,655 to Brown. Although liquid silicone rubber possesses many attributes for use in packaging, it also has other characteristics which render such applications problematic. For example, the surfaces of liquid silicone rubber parts are extremely tacky or sticky, having a very high coefficient of friction. As a result, in attempting to attach a dispensing valve to a container by a conventional threaded collar arrangement, the surfaces of the valve flange will stick tightly to the adjacent surfaces of the container and collar before the collar can be tightened securely enough to create a leak-resistant seal. Tightening of the collar often causes the valve flange, as well as the entire valve to distort from its designed shape, thereby preventing the formation of a secure seal, and/or changing the intended dispensing and sealing characteristics of the valve.
- Another drawback associated with the use of liquid silicone rubber in dispensing valves for product packaging is that there is presently no available adhesive capable of connecting the valve to a container in a manner that will withstand the operating pressures to which the valve and container are repeatedly subjected. The unique imperforate nature of the surfaces of the liquid silicone rubber valve precludes the use of conventional adhesives. Hence, the attachment of the liquid silicone rubber valve to a container in a manner that will not leak, and will withstand repeated pressurization and depressurization of the dispensing package is an important consideration.
- Another problem experienced with prior dispensing packages relates to achieving a proper design balance between the package container, valve, and fluid product, so that the product can be repeatedly dispensed without requiring excess force, and will neatly discharge only that amount of product which is desired by the user, particularly in keeping with the type of product involved. For instance, when dispensing highly concentrated fluid products, such as hand soaps, and the like, the user will typically require only a small amount or dollop of soap per application to achieve satisfactory results. In contrast, when using other types of fluid products, such as skin moisturizers, tanning formulas, and the like, larger quantities of product are typically required by the user for each application. The ability of the valve to quickly and readily open in response to moderate pressure on the container is important, as is the ability of the valve to quickly and securely close when the pressure has been released. Also important is the amount of pressure which must be maintained on the container to sustain fluid through the valve once the valve is opened. The ability to quickly and accurately achieve a proper balance between all of these factors is very desirable in designing dispensing packages.
- One aspect of the present invention is a dispensing package for fluid products and the like, comprising a container having a dispensing valve mounted therein. The dispensing valve includes a marginal flange which seals about a discharge opening of the container, and a valve head with an orifice therethrough which opens and closes in response to the application and release of a predetermined discharge pressure to control fluid flow therethrough. The valve includes a connector sleeve having one end connected with the valve flange, and an opposite end connected with the valve head adjacent a marginal edge thereof. The connector sleeve has a resiliently flexible construction, whereby when pressure within the container is raised above the predetermined discharge pressure, the valve head shifts outwardly in a manner which causes the connector sleeve to double over and then extend rollingly, and thereby apply a torque to the valve head which assists in opening the orifice.
- Another aspect of the present invention is a dispensing valve for fluid product packaging and the like, having a marginal valve flange shaped to seal about a discharge opening of the container. The valve includes a valve head having a marginal edge, interior and exterior sides, and an orifice extending therebetween which opens to permit fluid flow therethrough in response to communication with a predetermined discharge pressure, and closes to shut off fluid flow therethrough upon removal of the predetermined discharge pressure. A connector sleeve with a resiliently flexible construction, has one end connected with the valve flange, and the opposite end connected with the valve head adjacent to the marginal edge thereof, whereby when pressure in excess of the predetermined discharged pressure is applied to the interior side of the valve head, the valve head shifts outwardly in a manner which causes the connector sleeve to double over and then extend rollingly, and thereby apply a torque to the valve head which assists in opening the orifice.
- Yet another aspect of the present invention is a dispensing package for fluid products and the like, comprising a container having a dispensing valve mounted therein for controlling the flow of fluid product from the container. The dispensing valve includes a marginal valve flange, a valve head with an orifice which permits fluid flow therethrough, and a connector sleeve having one end connected with the valve flange, and an opposite end connected with the valve head adjacent a marginal edge thereof, such that the dispensing valve assumes a generally hat-shaped, side elevational configuration which normally projects inwardly toward the interior of the container. The connector sleeve has a resiliently flexible construction which permits the valve head to shift outwardly through the valve flange by doubling over the connector sleeve, which then extends rollingly outwardly.
- Yet another aspect of the present invention is a dispensing valve, comprising a marginal valve flange, and a valve head with an orifice therethrough which selectively opens to permit fluid flow in response to communication with a predetermined discharge pressure. The valve head is configured such that it assumes a generally convex orientation when the orifice is open. The dispensing valve also includes a connector sleeve, which has a resiliently flexible construction, with one end connected with the valve flange, and an opposite end connected with the valve head adjacent the marginal edge thereof, whereby when pressure in excess of the predetermined discharge pressure is applied to the interior side of the valve head, the valve head shifts outwardly in a manner which causes the connector sleeve to double over and then extend rollingly, and thereby apply a torque to the valve head which resiliently snaps the valve head into its convex orientation to quickly and fully open the orifice.
- Yet another aspect of the present invention is a self-sealing dispensing valve for fluid product packaging and the like, comprising a marginal valve flange, and a valve head with an orifice therein which selectively permits fluid flow through the valve. The interior side of the valve head has an outwardly curving arcuate side elevational shape defined by a first radius, while the exterior side of the valve head has an outwardly curving arcuate side elevational shape defined by a second radius, which is less than the first radius. A connector sleeve is provided with a resiliently flexible construction, and has one end connected with the valve flange, and the opposite end connected with the valve head.
- Yet another aspect of the present invention is a self-sealing dispensing valve for fluid product packaging and the like, comprising a marginal valve flange, and a valve head having a discharge opening therein to selectively permit fluid flow. The valve head includes an exterior side having an outwardly curving arcuate side elevational shape defined by a first radius, and an interior side with a center portion having a generally flat side elevational shape, and a marginal portion having an outwardly curving arcuate side elevational shape defined by a second radius, which is greater than the first radius. The discharge orifice extends from the center portion of the exterior surface to the interior surface of the valve head to achieve easy and complete opening of the discharge orifice when the predetermined discharge pressure is applied thereto, and secure and complete closing of the discharge opening when the predetermined discharge pressure is released.
- Yet another aspect of the present invention is a dispensing valve for fluid product packaging, comprising a marginal valve flange, and a valve head having an orifice therein which opens to permit fluid flow therethrough in response to a predetermined discharge pressure, and closes to shut off fluid flow therethrough upon removal of the predetermined discharge pressure. The dispensing valve includes a substantially imperforate rolling diaphragm positioned between and interconnecting the valve flange and the valve head, which has a flexible construction which permits the valve head to shift between a retracted position on an interior side of the marginal flange for storage, and an extended position on an exterior side of the marginal flange for dispensing. When pressure in excess of the discharge pressure, is applied to the container, the valve head first shifts to the extended position, and then opens the orifice to discharge the fluid product therethrough. Upon release of the pressure, the orifice first closes to shut off the flow of fluid product therethrough, and the valve head then shifts to the retracted position for storage.
- Yet another aspect of the present invention is a valve, comprising a marginal valve flange, and a valve head having a marginal edge, interior and exterior sides, and an orifice extending therebetween which in response to communication with a predetermined discharge pressure, shifts to a fully open position to permit fluid flow therethrough. A connector sleeve is provided, having a resiliently flexible construction, with one end connected with the valve flange, and an opposite end connected with the valve head adjacent the marginal edge thereof, which permits the valve head to shift with respect to the marginal valve flange in a manner which causes the connector sleeve to double over and then extend rollingly, and thereby apply an outwardly directed torque to the valve head which tends to open the orifice. The valve head is configured with a plan shape which expands or dilates as the orifice is shifted to the fully open position, which expansion is resisted by the connector sleeve, so as to inwardly compress the valve head, which inward compression and torque applied to the valve head by the connector sleeve combine to resiliently maintain the orifice in the fully open position, whereby that pressure required to maintain fluid flow through the orifice is substantially less than the predetermined threshold pressure, so as to provide greater ease of dispensing and flow control.
- Yet another aspect of the present invention is a dispensing package and associated valve for fluid products and the like, comprising a container having the dispensing valve mounted therein. The dispensing valve controls the flow of fluid product from the container, and has a marginal portion sealing about a discharge opening of the container. The valve also has a head portion including a central area with an orifice which opens to permit fluid flow therethrough in response to a predetermined discharge pressure within the container, and closes to shut off fluid flow therethrough upon removal of the predetermined discharge pressure within the container, and closes to shut off fluid flow therethrough upon removal of the predetermined discharge pressure. The valve includes a generally J-shaped connector sleeve, having a resiliently flexible construction with a first leg portion thereof connected with the marginal portion, and a second leg portion thereof connected with the head portion. The first and second leg portions are mutually oriented at an acute included angle, and join one another at an arcuate portion which facilitates movement of the head portion of the valve when dispensing product from the container.
- Yet another aspect of the present invention is a dispensing package and associated valve for fluid products and the like, comprising a container having the dispensing valve mounted therein. The dispensing valve controls the flow of fluid product from the container, and has a marginal portion sealing about a discharge opening of the container. The valve has a head portion including a central area with an orifice which opens to permit fluid flow therethrough in response to a predetermined discharge pressure within the container, and closes to shut off fluid flow therethrough upon removal of the predetermined discharge pressure. The valve also has a resiliently flexible connector sleeve, including a first end portion thereof connected with the marginal portion, and a second end portion thereof connected with the head portion. The second end of the connector sleeve has an inverted J-shape which extends arcuately into the head portion to facilitate movement of the head portion of the valve when dispensing product from the container.
- Yet another aspect of the present invention is a dispensing package and associated valve for fluid products and the like, comprising a container having the dispensing valve mounted therein. The dispensing valve controls the flow of fluid product from the container, and has a marginal portion sealing about a discharge opening of the container. The valve has a head portion including a central area with an orifice which opens to permit fluid flow therethrough in response to a predetermined discharge pressure within the container, and closes to shut off fluid flow therethrough upon removal of the predetermined discharge pressure. The valve also has a head portion including an exterior surface which interfaces with ambient environment and has a generally concave shape when viewed from outside the container, and interior surface which interfaces with the fluid product in the container and has a central area and a generally inclined outer portion which tapers inwardly toward the center area, such that the exterior and interior surfaces converge toward the central area of the head portion to provide a tapered construction with reduced thickness adjoining the orifice.
- Yet another aspect of the present invention is a dispensing package and associated valve for fluid products and the like, comprising a container having the valve mounted therein. The dispensing valve controls the flow of fluid product from the container, and has a marginal portion sealing about a discharge opening of the container. The valve has a head portion including a central area with an orifice which opens to permit fluid flow therethrough in response to a predetermined discharge pressure within the container, and closes to shut off fluid flow therethrough upon removal of the predetermined discharge pressure. The head portion has an exterior surface which interfaces with ambient environment, and an interior surface which interfaces with the fluid product in the container. The exterior and interior surfaces of the head portion taper inwardly toward the center area, such that the exterior and interior surfaces converge toward the central area of the head portion to provide a tapered construction with reduced thickness adjoining the orifice.
- The principal objects of the present invention are to provide a dispensing package and an associated self-sealing valve which are capable of easily and neatly dispensing a wide variety of different types of fluid products. The self-sealing valve is matched with both the container and the type of fluid product to be dispensed, so as to quickly and securely seal, yet readily and fully open when the user applies modest pressure to the container. In preferred embodiments, the valve includes a resiliently flexible connector sleeve which is configured to apply a torque to the valve head which assists in opening the orifice. The connector sleeve has sufficient flexibility that pressure increases in the interior of the container, such as those caused by thermal expansion, are offset by shifting the valve head on the connector sleeve, so as to alleviate excess pressure on the orifice. The connector sleeve is also configured to provide sufficient flexibility that any misalignment and/or distortion of the valve flange when attached to the associated container are not transmitted to the valve head, thereby permitting unhindered opening and closing of the orifice. The connector sleeve is also configured to provide sufficient flexibility that shock impact forces, and the like applied to the container are absorbed by shifting the valve head on the connector sleeve, so as to avoid inadvertent opening of the valve orifice. The valve is configured to provide a generally constant flow rate therethrough, even when exposed to a relatively wide range of container pressures. For those products wherein a substantial amount of material is typically dispensed per application, the valve is configured such that once the orifice is shifted open, the amount of pressure required to maintain fluid flow through the orifice is reduced, so as to provide greater ease of operation, without sacrificing secure sealing of the valve. The valve is extremely versatile, and may be used in either top, bottom or side dispensing packages to accommodate a wide variety of different applications. The valve is very durable, while having reduced manufacturing costs, and an uncomplicated design. design. The overall package is efficient in use, economical to manufacture, capable of a long operating life, and particularly well adapted for many different proposed uses.
- These and other advantages of the invention will be further understood and appreciated by those skilled in the art by reference to the following written specification, claims and appended drawings.
-
FIG. 1 is a perspective view of a dispensing package embodying the present invention, wherein a portion thereof has been broken away to reveal a self-sealing valve mounted in a bottom portion of an associated container. -
FIG. 2 is a side elevational view of the dispensing package, wherein a portion thereof has been broken away to reveal the valve, which is shown in a fully retracted and fully closed position. -
FIG. 3 is a side elevational view of the dispensing package, wherein a portion thereof has been broken away to reveal the valve, which is shown in a fully extended and fully open position. -
FIG. 4 is an enlarged, fragmentary top view of the valve. -
FIG. 5 is an enlarged, side elevational view of the valve. -
FIG. 6 is an enlarged, cross-sectional view of the valve. -
FIG. 7 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in the fully closed and fully retracted position. -
FIG. 8 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in a fully closed, and partially retracted position. -
FIG. 9 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in a fully closed and partially extended position. -
FIG. 10 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in a fully closed and fully extended position. -
FIG. 11 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in a fully closed and fully extended position, wherein a valve head portion thereof is shown beginning to snap outwardly. -
FIG. 12 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in a fully closed, and fully extended position, wherein the valve head portion of which is shown continuing to snap outwardly. -
FIG. 13 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in a fully open, and fully extended position, wherein the valve head portion of which is shown snapped fully outwardly. -
FIG. 14 is an enlarged, bottom plan view of the valve shown in the position illustrated inFIG. 13 . -
FIG. 15 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in a fully closed, and partially extended position abutting a container closure. -
FIG. 16 is an enlarged, cross-sectional view of the valve installed in an associated container, with the valve shown in a fully closed and fully extended position abutting an alternative container closure. -
FIG. 17 is an enlarged, fragmentary top plan view of another dispensing valve embodying the present invention. -
FIG. 18 is an enlarged, fragmentary bottom plan view of the valve shown inFIG. 17 . -
FIG. 19 is an enlarged, cross-sectional view of the valve shown inFIGS. 17-18 . -
FIG. 20 is an enlarged, vertical cross-sectional view of the valve shown inFIGS. 17-19 installed in an associated top dispense container, with the container in a fully upright orientation, and the valve in a fully closed position. -
FIG. 21 is an enlarged, vertical cross-sectional view of the valve and associated top dispense container shown inFIG. 20 , with the container shown in an inverted orientation, and the valve in its fully closed position. -
FIG. 22 is an enlarged, cross-sectional view of the valve and associated top dispense container shown inFIGS. 20-21 , with the container in the inverted orientation, and the valve in a closed, partially extended position, wherein a valve head portion is shown beginning to snap outwardly. -
FIG. 23 is an enlarged, cross-sectional view of the valve and associated top dispense container shown inFIGS. 20-22 , with the container in the inverted orientation, and the valve in a fully open, and fully extended position, wherein the valve head. portion is shown snapped fully outwardly. -
FIG. 24 is an enlarged, cross-sectional view of yet another valve embodying the present invention. -
FIG. 25 is an enlarged, cross-sectional view of yet another valve embodying -
FIG. 26 is an enlarged, cross-sectional view of yet another valve embodying the present invention. -
FIG. 27 is an enlarged, cross-sectional view of yet another valve embodying the present invention. -
FIG. 28 is an enlarged, fragmentary, bottom plan view of yet another valve embodying the present invention. -
FIG. 29 is an enlarged, cross-sectional view of the valve shown inFIG. 28 . -
FIG. 30 is an enlarged, cross-sectional view of yet another valve embodying the present invention. -
FIG. 31 is an enlarged, cross-sectional view of yet another valve embodying the present invention. -
FIG. 32 is an enlarged, cross-sectional view of yet another valve embodying the present invention. - For purposes of description herein, the terms “upper”, “lower”, “right”, “left”, “rear”, “front”, “vertical”, “horizontal”, and derivatives thereof shall relate to the invention as oriented in
FIGS. 1-3 . However, it is to be understood that the invention may assume various alternative orientations and step sequences, except where expressly specified to the contrary. It is also to be understood that the specific devices and processes illustrated in the attached drawings, and described in the following specification are simply exemplary embodiments of the inventive concepts defined in the appended claims. Hence, specific dimensions and other physical characteristics relating to the embodiments disclosed herein are not to be considered as limiting, unless the claims expressly state otherwise. considered as limiting, unless the claims expressly state otherwise. - The reference numeral 1 (
FIG. 1 ) generally designates a dispensing package embodying the present invention.Dispensing package 1 is particularly adapted for dispensing fluid products, such as liquid soaps, household cleaners, polishes, moisturizing creams, foodstuffs, and the like, and includes acontainer 2 with a self-sealingdispensing valve 3 mounted therein.Valve 3 includes amarginal flange 4, avalve head 5 with adischarge orifice 6 therein, and aconnector sleeve 7, having one end connected withvalve flange 4, and the opposite end connected with valve head S adjacent a marginal edge thereof.Connector sleeve 7 has a resiliently flexible construction, such that when pressure withincontainer 2 is raised above a predetermined amount,valve head 5 shifts outwardly (FIGS. 8-15 ) in a manner which causesconnector sleeve 7 to double over and then extend rollingly. - The
container 2 illustrated inFIGS. 1-3 is particularly designed for bottom dispensing, and includes a generally flexible,oblong container body 12 supported on a substantiallyrigid base 13.Container body 12 is preferably integrally molded from an appropriate synthetic resin material or the like, so as to create a one-piece construction that includes oppositely oriented sidewalls 14 and 15, a top 16 and a bottom 17. The container sidewalls 14 and 15 are laterally flexible to pressurize and depressurize the interior ofcontainer 2, and preferably have sufficient resilience or stiffness that they automatically return to their original shape upon release of any external forces which are applied tocontainer 2 to dispense afluid product 18 therefrom. - The container bottom 17 illustrated in
FIGS. 2 and 3 includes a downwardly openingneck 20, which defines adischarge opening 21 about which themarginal flange 4 ofvalve 3 is positioned. As best illustrated inFIGS. 7 and 8 , the free end ofneck 20 includes an annularly shapedgroove 22 having a general L-shaped longitudinal cross-sectional configuration, which is shaped to closely receive themarginal flange 4 ofvalve 3 therein.Container base 13 includes avalve retainer ring 23 positionedadjacent groove 22, and attached tocontainer body 12 by asnap lock arrangement 24. Container base 13 (FIGS. 2 & 3 ) has a substantially flat bottom 25 adapted to abuttinglysupport dispensing package 1 on an associated surface, such as a countertop, sink, worksurface, or the like.Neck groove 22 is located inwardly of the bottom 25 ofcontainer base 13, so as to positionvalve 3 in a generally recessed condition within dispensingpackage 1, as explained in greater detail hereinafter. - With reference to
FIGS. 4-6 , the illustrated self-sealingdispensing valve 3 has an integrally formed, one-piece construction.Valve 3 has an interior -side which interfaces with thefluid product 18 incontainer 2, and an oppositely oriented exterior side which interfaces with ambient environment.Valve 3 is preferably molded from a resiliently flexible material, and in the illustrated example comprises a silicone rubber which is substantially inert so as to avoid reaction with and/or adulteration of the fluid product being packaged. In one working embodiment of the present invention,valve 3 is produced at relatively high speeds through the molding of liquid silicone rubber. - The illustrated marginal flange portion 4 (
FIGS. 4-6 ) ofvalve 3 has an annular plan shape, and a substantially L-shaped cross-sectional configuration, comprising aninner edge 30, anouter edge 31, a bottom 32, and a top 33 with anouter rim 34 upstanding therefrom.Marginal valve flange 4 has substantial thickness between the bottom 32 and top 33 which is resiliently compressed upon attachment ofretainer ring 23 to form a secure leak-resistant seal therebetween. Therim portion 34 ofvalve flange 4 positively locksvalve 3 inneck groove 22 to prevent any radial movement therebetween. - The illustrated head portion 5 (
FIGS. 4-6 ) ofvalve 3 has a circular plan shape, and a generally tapered construction which is thicker at the radially outside portion ofvalve head 5, and thinner at the radially inside portion thereof. This tapered construction assists in achieving the snap open/snap close action ofvalve 3, as described below. More specifically, in the illustrated example,valve head 5 has an exterior side orsurface 38, which has an arcuately shaped side elevational configuration which opens or curves outwardly, toward the exterior of dispensingpackage 1, and is defined by a first, predetermined radius. Valvehead exterior surface 38 extends continuously between the interior sidewalls ofconnector sleeve 7.Valve head 5 also includes an interior side orsurface 39, which has amarginal portion 40 with an arcuately shaped side elevational configuration which opens or curves outwardly, toward the exterior of dispensingpackage 1, and is defined by a second predetermined radius. The radius ofmarginal portion 40 oninterior surface 39 is larger than that ofexterior surface 38, such that the two surfaces converge toward the center ofvalve head 5 at or adjoiningorifice 6, and provide the above-noted inwardly tapered construction ofvalve head 5. Theinterior surface 39 ofvalve head 5 also includes acenter portion 41, which has a circular plan shape, with a substantially planar or flat side elevational configuration, oriented generally perpendicularly to dischargeorifice 6. Thecenter portion 41 ofvalve head 5 assists in improving the opening and closing characteristic ofvalve 3, as set forth below. The outer perimeter ofvalve head 5 is defined by a circularmarginal edge 42, which begins at theouter edge 43 ofmarginal portion 40, and extends outwardly therefrom with a slight outward taper, ultimately merging intoconnector sleeve 7. The intersection of themarginal portion 40 and thecenter portion 41 ofvalve head 5 defines acircular edge 44. The outside diameter ofvalve head 5, as measured alongmarginal edge 42 is substantially smaller than the inside diameter ofmarginal flange 4, as measured alonginner edge 30. As explained in greater detail below, this spacing betweenvalve head 5 andmarginal flange 4permits valve head 5 to shift freely in an axial direction through the center ofmarginal flange 4. - The
connector sleeve portion 7 illustrated inFIGS. 4-6 is in the form of a rolling diaphragm, having a hollow circular plan configuration, and a generally J-shaped longitudinal cross-sectional shape, comprising acylindrical sidewall portion 45, and a radially outwardly extendingbase portion 46.Connector sleeve 7 has interior andexterior surfaces connector sleeve 7 has a substantially uniform thickness. Oneend portion 49 ofconnector sleeve 7 is connected with theexterior surface 38 ofvalve head 5 adjacent themarginal edge 42 thereof, and theopposite end portion 50 ofconnector sleeve 7 is connected with theinner edge 30 ofmarginal valve flange 4. Theinterior surface 47 ofconnector sleeve 7adjacent end 49 is positioned substantially coplanar and contiguous with themarginal edge 42 ofvalve head 5, while theopposite end 50 ofconnector sleeve 7 is connected withmarginal valve flange 7 at a medial portion ofinner edge 30, such that thebase portion 46 ofconnector sleeve 7 flares in a radially inwardly direction frommarginal valve flange 46, and also protrudes outwardly toward the exterior of dispensingpackage 1 at anarcuate portion 51 ofconnector sleeve 7. The arcuately flared shape ofconnector sleeve portion 51assists connector sleeve 7 in first doubling over, and then rollingly extending asvalve head 5 shifts outwardly in the manner described in greater detail below. The marginal attachment point ofend 49 ofconnector sleeve 7 tovalve head 5, as well as its associated geometry, increases the effectiveness of torque forces which assist in snappingvalve 3 open, as discussed hereinafter. Theexterior surface 48 ofsleeve side wall 45 atend 49 ofconnector sleeve 7 intersects theexterior surface 38 ofvalve head 5 at an angle which defines acircular edge 52. In the illustrated example, the exteriormost area of sleevearcuate portion 51 is disposed substantially in-line with or slightly interior of the bottom 32 ofmarginal flange 4, so as to facilitate fabrication. The length ofconnector sleeve 7 is preferably selected sufficiently short to prevent the same from folding in behindvalve head 5 whenvalve head 5 is in the fully extended position (FIGS. 10-14 ), thereby avoiding interference with the retraction ofvalve head 5, which is explained in detail below. - The illustrated one-
piece valve 3 has a hat-shaped side elevational configuration in its original, normal condition, whereinvalve head 5 assumes a generally concave shape. The resilient flexibility ofconnector sleeve 7 permits the same to double over and then extend rollingly in the manner described hereinafter.Connector sleeve 7 acts as a rolling diaphragm withvalve head 5 mounted at the center thereof in a manner which permitsvalve head 5 to shift or float freely inwardly and outwardly in an axial direction with respect to theopening 21 incontainer neck 20. - In the illustrated example, discharge orifice 6 (
FIGS. 4-6 ) has a cross-slit construction which includes two, intersectinglinear slits opposite sides center portion 41. The illustrated slits 55 and 56 are oriented in a mutually perpendicular relationship, and have their opposite ends 55 a and 55 b positioned slightly inwardly from theouter edge 44 ofcenter portion 41. Orifice slits 55 and 56 define four flaps orpedals 57 which flex inwardly and outwardly to selectively permit the flow of fluid product throughvalve 3.Slits center portion 41 ofvalve head 5, without removing any substantial amount of material therefrom, so that the opposite side faces 58 and 59 (FIGS. 13 & 14 ) of valve flaps 57 closely seal against one another whendischarge orifice 6 is in its normally, fully closed position. The length and location ofslits valve 3, as well as other dispensing characteristics of dispensingpackage 1. The side faces 58 and 59 of eachvalve flap 57 intersect at their free ends to define anend edge 60. That portion ofvalve head 5 disposed betweenmarginal portion 40,marginal edge 42, slit ends 55 a and 55 b, andexterior surface 38 defines aring portion 61 of thevalve head 5, which functions in the manner described in detail hereinafter. - It is to be understood that
orifice 6 may assume many different shapes, sizes and/or configurations in accordance with those dispensing characteristics desired. For example,orifice 6 may comprise a single slit, particularly when smaller or narrower streams are desired.Orifice 6 may also include three or more slits, particularly when larger or wider streams are desired, and/or the fluid product contains aggregates, such as some types of salad dressings, and the like. Other forms oforifice 6, such as holes, duck bills, etc. may also be incorporated intovalve 3. - Self-sealing
dispensing valve 3 is preferably especially configured for use in conjunction with aparticular container 2, and a specific type of fluid product, so as to achieve the exact dispensing characteristics desired. For example, the viscosity and density of the fluid product are both important factors in designing the specific configuration ofvalve 3, as is the shape, size, and strength ofcontainer 2, particularly when dispensingpackage 1 is configured for bottom dispensing. The rigidity and durometer of the valve material, and size and shape of bothvalve head 5 andconnector sleeve 7 are also important in achieving the desire dispensing characteristics, and should be carefully matched with both thecontainer 2 andfluid material 18 to be dispensed therefrom. - One working embodiment of the present invention is particularly designed to dispense fluid household products therefrom, such as dishwasher detergents, liquid soap, moisturizing creams, foodstuffs, and the like. When such fluid product materials are to be dispensed from a blow molded, polypropylene container with
valve 3 positioned at thebottom 4 thereof for bottom dispensing, onespecific valve 3 found to be particularly suited is as follows. The outside and inside diameters ofmarginal valve flange 4 are 0.7000 and 0.5802 inches respectively, while the outside diameter of themarginal edge 42 ofvalve head 5 is 0.4391 inches, and the outside diameter ofcenter portion 41 is around 0.2212 inches. The thickness ofconnector sleeve 7 is approximately 0.0130 inches, and has an overall height, as measured from the bottom 32 ofmarginal flange 4 to theedge 52 ofvalve head 5, of 0.1159 inches. The radius of valvehead exterior surface 38 is 0.2900 inches, while the radius of themarginal portion 40 ofinterior surface 39 is 0.0350 inches. Hence, the total thickness ofvalve head 5 atmarginal edge 42 is around 0.0778 inches and around 0.0530 inches at the middle ofcenter portion 41. The overall height ofvalve 3, as measured from the bottom 32 ofmarginal flange 4 to the top ofcenter portion 41 is approximately 0.2402 inches.Slits valve center portion 41. The valve is molded integrally from a liquid silicone rubber of the type manufactured under the trademark “SILASTIC LSR” by Dow Corning Corporation. - Experimental tests conducted on valves having the above-identified specific dimensions and characteristics indicate that
valve 3 snaps open when exposed to a pressure insidecontainer 2 equal to approximately 25-28 inches of water. That pressure which causesvalve 3 to snap open is generally referred to herein as the predetermined dispensing or opening pressure.Valve 3 will automatically snap closed when the interior pressure ofcontainer 2 drops below a pressure equal to approximately 16-18 inches of water. That pressure which causesvalve 3 to snap closed is generally referred to herein as the predetermined. closing pressure. While thenoted valve 3 is open, a substantially constant flow or stream of fluid product is discharged throughorifice 6, even when extra pressure is exerted oncontainer 2. - It is to be understood that according to the present invention,
valve 3 may assume many different shapes and sizes, particularly in keeping with the type ofcontainer 2 and fluid product to be dispensed therefrom. The predetermined opening and closing pressures ofvalve 3 may be varied widely in accordance with those dispensing criteria desired for a particular product. Flow characteristics of the dispensed fluid product can also be adjusted substantially, such as for relatively wide column-like streams, thin needle-like streams, dollops, and the like. - In operation, dispensing
package 1 functions in the following manner.Valve 3 normally assumes the inwardly protruding orientation illustrated inFIG. 7 , whereinvalve 3 remains substantially in its original molded shape without deformation, withconnector sleeve 7 being fully retracted anddischarge opening 6 being fully closed. Whenvalve 3 is mounted in the bottom ofcontainer 2, as is shown in the illustratedbottom dispensing package 1,valve 3 is configured such thatdischarge orifice 6 will remain securely closed, even under the hydraulic head pressure applied thereto by thefluid product 18 when thecontainer 2 is completely full. - When additional pressure is communicated with the interior of
container 2, such as by manually flexingcontainer sidewalls connector sleeve 7 functions as a rolling diaphragm, and permitsvalve head 5 to begin shifting axially outwardly toward the exterior of dispensingpackage 1 by doubling overconnector sleeve 7, which then in turn, begins to extend outwardly in a rolling fashion, as illustrated inFIG. 8 . The outwardly protruding J-shaped configuration ofconnector sleeve 7 assists in initiating this rolling motion ofconnector sleeve 7. The elastic deformation ofconnector sleeve 7 from its original molded shape (FIG. 7 ), generates a complex pattern of stresses withinvalve 3 which resiliently urges the same back into its original or normal configuration, which forces include an outwardly directed torque applied byconnector sleeve 7 tovalve head 5 adjacentmarginal edge 42, which tends to resiliently urgedischarge orifice 6 toward its open position, as described in greater detail below. - When additional pressure is communicated with the interior of
container 2, as illustrated inFIG. 9 ,valve head 5 continues to shift axially outwardly by rollingconnector sleeve 7 over upon itself. Themarginal edge 42 ofvalve head 5 passes through the center ofmarginal valve flange 4. - When additional pressure is communicated with the interior of
container 2,valve head 5 continues to extend outwardly toward the exterior of dispensingpackage 1 untilconnector sleeve 7 is fully extended, as illustrated inFIG. 10 . When valve heads are in the fully extended position (FIG. 10 ), the stress forces built up inconnector sleeve 7 cause thesidewall portion 45 of theconnector sleeve 7 to assume a generally cylindrical shape concentric with and about themarginal edge 42 ofvalve head 5.Sidewall 45 ofconnector sleeve 7 is folded back 180 degrees from its original molded shape, to an orientation parallel with themarginal edge 42 ofvalve head 5, and defines an exterior lip orrim 65. - When additional pressure is communicated with the interior of
container 2, as illustrated inFIG. 11 ,valve head 5 continues to shift outwardly. However, sinceconnector sleeve 7 is fully extended, further outward shifting ofvalve head 5 longitudinally tenses or stretchesconnector sleeve 7, thereby increasing the outwardly directed torque applied to thevalve head 5. Also, the further outward movement ofvalve head 5 tends to flatten or straightenvalve head 5, particularly along theexterior surface 38 thereof, as best illustrated inFIG. 11 . This flattening motion tends to enlarge or dilate the circular plan configuration ofvalve head 5, which enlargement is in turn resisted by radially inwardly directed forces applied to themarginal edge 42 ofvalve head 5 byconnector sleeve 7, thereby generating another complex pattern of stresses withinvalve 3, which forces include those which tend to compressvalve head 5 in a radially inward direction. Due to the tapered shape ofvalve head 5, the majority of compression strain is believed to take place adjacent thecenter portion 41 ofvalve head 5. As best illustrated by a comparison of the broken line figure and the full line figure provided inFIG. 11 , whenconnector sleeve 7 is in the fully extended position, as shown in the broken lines, and additional pressure is communicated with theinterior side 39 ofvalve 3, exterior rim 65 moves axially outwardly and radially outwardly as shown in the full lines ofFIG. 11 . Themarginal edge 42 ofvalve head 5 is shown bent or elastically deformed inwardly as a consequence of the torque forces applied thereto by:connector sleeve 7. - When additional pressure is communicated with the interior of
container 2, as illustrated inFIG. 12 ,valve head 5 continues to shift outwardly by further longitudinal stretching ofconnector sleeve 7, and further enlargement of the plan shape ofvalve head 5. This motion is best illustrated by a comparison of the broken line figure and the full line figure provided inFIG. 12 . Exterior rim 65 moves from the condition illustrated inFIG. 11 , which corresponds to the broken line figure ofFIG. 12 , in an axially outwardly and radially outwardly fashion to the position shown in the full lines ofFIG. 12 . Themarginal edge 42 ofvalve head 5 is shown more bent or elastically deformed inwardly, as a consequence of the increased torque forces applied thereto byconnector sleeve 7. These combined forces and motions also serve to further compressvalve head 5 into a state of bifurcation, as illustrated inFIG. 12 , wherein the combined forces acting onvalve head 5 will, upon application of any additional outward force on theinterior side 39 ofvalve 3, cause the same to quickly open outwardly with a snapping motion to separate valve flaps 57 in the manner illustrated inFIGS. 13 and 14 , and thereby dispense liquid product throughdischarge orifice 6. The bifurcation state ofvalve 3, as the term is used herein, is illustrated inFIG. 12 , and defines a relatively unstable condition whichvalve 3 assumes immediately prior to opening into the fully open condition shown inFIGS. 13 and 14 . Asvalve 3 passes through the bifurcation state shown inFIG. 12 , the combined forces acting onvalve head 5 are in a very temporary, unstable condition of equilibrium for a given moment, and then quickly shiftvalve head 5 into a generally convex shape, simultaneously openingorifice 6. In the bifurcation state shown by the full lines inFIG. 12 ,valve head 5 assumes the shape of a nearly planar disc, withexterior surface 38 cupped inwardly betweenrim 65 and flap edges 60, andinterior surface 39 bent slightly outwardly toward the center oforifice 6. - The snap type opening of
valve 3 is achieved, at least in part, by the torque exerted onvalve head 5 byconnector sleeve 7, which as noted in the example illustrated inFIG. 12 , is sufficient to substantially distort the shape of themarginal edge 42 ofvalve head 5. Whenvalve 3 assumes the fully extended and fully open position illustrated inFIGS. 13 and 14 , valve flaps 57, as well as the associatedrim portion 61 ofvalve head 5 are bent or elastically deformed outwardly, thereby permitting therim 65 ofvalve head 5 to become smaller or constrict slightly. Valve flaps 57 tend to fold openly along lines extending between theends valve head 5 byconnector sleeve 7, in addition to the outwardly oriented torque applied thereto byconnector sleeve 7, combine to keepdischarge orifice 6 in the fully open position, even if the pressure communicated with the interior ofcontainer 2 is reduced. Hence, afterdischarge orifice 6 has been opened through the application of the predetermined opening pressure, that pressure which is required to maintain fluid flow throughorifice 6 is reduced, or less than the threshold pressure, so as to provide greater dispensing ease and flow control. Since the resiliency ofconnector sleeve 7 serves to resist the dilating action ofvalve head 5, and thereby compresses the same to achieve a snap open/snap close motion, if the resiliency ofconnector sleeve 7 is varied somewhat, such as by makingconnector sleeve 7 thicker or thinner, the amount or degree of snap action can be thereby adjusted for any specific application. Similarly the resilient strength ofring 61 can be adjusted to accomplish the desired snap action. - The combined compressive and torque forces acting on
valve head 5 byconnector sleeve 7 open valve flaps 57 to a generally predetermined configuration, such that the rate of flow throughdischarge orifice 6 remains substantially constant, even though significant pressure differences are applied tocontainer 2. As best illustrated inFIGS. 13 and 14 , aftervalve 3 passes through the bifurcation state shown inFIG. 12 , in the direction of opening, it quickly and positively assumes the fully open condition shown inFIGS. 13 and 14 , wherein the end edges 60 of valve flaps 57 diverge radially outwardly, such thatdischarge opening 6 assumes a star shaped plan configuration, as best seen inFIG. 14 . Themarginal edge 42 ofvalve head 5 rotates or pivots inwardly somewhat under the pressure offluid product 18, and the resilient torque applied thereto byconnector sleeve 5, which continues to resiliently urgevalve 3 back toward its original molded shape (FIG. 7 ).Connector sleeve 7 remains tensed both axially and circumferentially under outwardly directed forces generated by the pressures withincontainer 2, as well as the dynamic flow of fluid product throughorifice 6. The geometry of the illustratedvalve 3, particularly in the shape ofvalve head 5 andconnector sleeve 7, serve to forcevalve 3 into the configuration shown inFIGS. 13 and 14 wheneverorifice 6 is snapped opened. - When pressure within the interior of
container 2 is reduced,discharge orifice 6 will still remain open in substantially the fully open position shown inFIGS. 13 and 14 , until the pressure reaches the preselected closure pressure, at which point, the forces developed inconnector sleeve 7 through elastic deformation from its original molded shape (FIG. 7 ), pullvalve head 5 inwardly, back through the bifurcation state, and into the concave orientation shown inFIG. 10 , thereby positively and securely closingdischarge orifice 6 with a snapping action, similar to that action by which dischargeorifice 6 opened. The snap closing motion ofvalve head 5 serves to closeorifice 6 very quickly and very completely, so as to sharply cut off the stream of fluid product being dispensed frompackage 1 without any drops or dribbles, even when very viscous and/or dense products are being dispensed.Valve 3 will continue to assume the fully closed, fully extended position illustrated inFIG. 10 , until such time as the interior pressure incontainer 6 is further reduced, so as to permit the resiliency inconnector sleeve 7 to shiftvalve head 5 back into the fully retracted, initial position illustrated inFIG. 7 . - At least some of those
valves 3 contemplated by the present invention have a relatively high predetermined closing pressure, such as in the nature of 17-18 inches of water, so thatorifice 6 will snap securely closed even ifcontainer 2 does not provide any suck back, or negative pressure. Furthermore, theconnector sleeve 7 of at least somesuch valves 3 is constructed to provide sufficient resiliency to automatically shiftvalve head 5 back to the fully retracted position (FIG. 7 ) without any suck back or negative pressure fromcontainer 2. Hence,valves 3 can be readily adapted for use in conjunction with containers which include collapsing bags, tubes or the like. Also,valves 3 are particularly adapted for bottom dispensing packages, such as those illustrated inFIGS. 1-3 , wherevalve 3 normally supports a column of liquid product. - In many embodiments of dispensing
package 1,container 2 will be designed with relativelystiff sidewalls container 2 after dispensing fluid product therefrom is typically desired to prevent collapsing thecontainer 2, and thereby facilitate continued ease of dispensing untilcontainer 2 is completely empty. Whenvalve 3 is in the fully closed and fully retracted position (FIG. 9 ), the concave configuration ofvalve head 5permits orifice 6 to readily open inwardly so that air can be sucked back into the interior ofcontainer 2, yet positively preventsorifice 6 from opening outwardly in a manner which would permit leakage. Hence, even relatively weak, thinwalled containers 2 can be used withvalve 3 without significant. collapsing of container sidewalls 14 and 15. - With reference to
FIG. 15 , dispensingpackage 1 may be provided with a positive closure arrangement to prevent inadvertent discharge when dispensingpackage 1 is being transported, or the like, such as for initial shipping, travel, etc. The dispensingpackage 1 shown inFIG. 15 includes a slidingclosure 70, which when closed, physically blocks the outward rolling extension ofconnector sleeve 7 and associatedvalve head 5. By constraining the outwardly extending motion ofconnector sleeve 7,valve head 5 is prevented from inverting into a convex configuration, and thereby keepsdischarge orifice 6 fully closed. Whenclosure 70 is slid sideways out from underneathvalve 3,valve 3 is then free to reciprocate andopen orifice 6 to dispense liquid product fromcontainer 2. -
FIG. 16 is a partially schematic view of an alternative closure arrangement for dispensingpackage 1, wherein aremovable cap 71 is provided for detachable connection withretainer ring 23 by conventional fastener means, such as a snap lock, hinge, etc. (not shown). The illustratedcap 71 has a generally flatexterior surface 72, aninterior surface 73, and acylindrical sidewall 74, which is sized and shaped such thatinterior cap surface 73 abuts therim 65 ofvalve 3 whenvalve head 5 is in its fully extended position. The central portion of capinterior surface 73 includes an inwardly projectingprotuberance 75, which in the illustrated example, is generally in the form of a convex, semi-spherical node that extends inwardly towardvalve 3 to a position adjacent to thecupped exterior surface 38 ofvalve 3.Node 75 is shaped to positively retainvalve head 5 in a concave configuration, and thereby securely maintainorifice 6 fully closed. - The reciprocating motion of
valve head 5 on rollingconnector sleeve 7 provides dispensingpackage 1 with several important advantages. For example,connector sleeve 7 is preferably configured with sufficient flexibility that abnormal pressure increases developed within the interior ofcontainer 2, such as those caused by thermal expansion, or the like, are offset by the axial shifting motion ofvalve head 5 with respect toconnector sleeve 7, so as to alleviate excess pressure ondischarge orifice 6. In this manner, if dispensingpackage 1 were used in conjunction with a liquid soap or shampoo that was designed for hanging in an inverted condition in a shower or bath, when ambient temperatures within the shower rise, instead of communicating the associated pressure increases directly to dischargeorifice 6 in a manner which might cause it to inadvertently open,valve head 5 shifts axially outwardly to relieve any such pressure, and thereby prevent any inadvertent leakage of the fluid product from dispensingpackage 1. - Another example of the benefits achieved by the rolling diaphragm action of
connector sleeve 7 and axial reciprocating motion ofvalve head 5, is thatconnector sleeve 7 is preferably configured with sufficient flexibility that any misalignment and/or distortion of thevalve flange 4, such as that experienced when attaching the valve tocontainer 2, are not transmitted tovalve head 5, thereby permitting unhindered operation ofdischarge orifice 6. As previously noted, due to the inherently sticky nature of liquid silicone rubber, the attachment of valves constructed from the same to acontainer 2 can be quite difficult, and often results in some type of unequal compression and/or distortion of themarginal flange 4 ofvalve 3. Without the rolling diaphragm action ofconnector sleeve 7, any such distortion is communicated directly to thevalve head 5, which in turn distortsdischarge orifice 6, and alters important design characteristics such as its predetermined opening pressure, closing pressure, flow rate, etc. The rollingdiaphragm connector sleeve 7 associated with thepresent valve 3 tends to insulate or isolatevalve head 5 frommarginal flange 7, such that it can float freely, and thereby avoid such problems. - Yet another example of the benefits achieved by this aspect of the present invention is that
connector sleeve 7 is preferably configured with sufficient flexibility that vibrations, shock impact forces, and the like applied tocontainer 2 are absorbed and/or dampened by shiftingvalve head 5 on rollingconnector sleeve 7, so as to avoid inadvertent opening ofdischarge opening 6. In theevent dispensing package 1 is dropped onto the floor, slammed forcefully against a worksurface, or otherwise jarred or shook, the shock forces arising from the acceleration and/or deceleration of the fluid product withincontainer 2 would otherwise be communicated directly with thedischarge orifice 6, and tend to cause it to open inadvertently. However, the rollingconnector sleeve 7 action ofvalve 3 serves as a cushion or shock absorber for such shock impact forces, and thereby greatly alleviates the chance for the inadvertent discharge of fluid product from dispensingpackage 1. In a similar manner, when dispensingcontainer 1 is used for non-homogenous fluids, such as some types of salad dressings, or the like, which are typically shook prior to use,connector sleeve 7 assists in absorbing these vibrations, and thereby prevent leakage. - Yet another example of the benefits achieved by this aspect of the present invention is that
connector sleeve 7 is preferably configured with sufficient flexibility that only very moderate pressures, substantially lower than the predetermined opening pressure ofvalve 3, are required to shiftvalve head 5 from the fully retracted position (FIG. 7 ) to the fully extended position (FIG. 10 ), thereby improving the dispensing “feel” of thepackage 1. When the user graspscontainer 2,-even a very light squeeze onsidewalls connector sleeve 7 andvalve head 5 to the fully extended and fully closed position shown inFIG. 10 , at whichpoint valve head 5 halts momentarily and further movement of the fluid product is resisted until additional forces are exerted oncontainer 2 which result in an internal pressure withincontainer 2 greater than the predetermined opening pressure ofvalve 3. This motion ofconnector sleeve 7 andvalve head 5 is sensed by the user through touch or feel, typically in the form of a vibration or ripple experienced incontainer sidewalls valve head 5 reaches the fully extended position (FIG. 10 ). This ripple motion signals the user thatvalve head 5 is fully extended, and that further pressure will causevalve 3 to snap open and dispense fluid product. Whenvalve 3 snaps open and snaps closed, similar vibrations or ripples are communicated to the user throughcontainer sidewalls - In the illustrated examples of dispensing
package 1,valve 3 is mounted withincontainer 2 in a manner which causesvalve head 5 to shift between the fully retracted position shown inFIG. 7 whereinvalve 3 is disposed wholly within the interior ofcontainer 2 for safely storingvalve 3, and the fully extended discharge position shown inFIGS. 13 and 14 whereinvalve head 5 and associatedorifice 6 are disposed wholly outsidecontainer 2 for neatly dispensing the fluid product therethrough. By shiftingvalve head 5 between these two extreme positions,valve 3 can remain normally unexposed and secure within thecontainer 2 when not in use, without sacrificing neatness when dispensing. Also,valve 3 is preferably positioned incontainer 2 so that thearcuate portion 51 ofconnector sleeve 7 is disposed adjacent the bottom 25 ofcontainer base 13, so that if dispensing package is slammed down onto a surface, abutment betweenvalve 3 and the surface will preventvalve 3 from shifting to the fully extended position, and thereby keeporifice 6 closed to prevent inadvertent leakage. -
Dispensing package 1 is extremely versatile, being capable of easily and neatly dispensing a wide variety of fluid products. The self-sealingvalve 3 is matched with both thecontainer 2 and the type ofliquid product 18 to be dispensed therefrom, so as to quickly and securely seal, yet readily open upon manipulation by the user, without requiring excess pressure or forces. The resilientlyflexible connector sleeve 7, which is configured to double over and extend rollingly, accommodates for thermal expansion withincontainer 2, absorbs shock impact forces to the container, accommodates for any misalignment and/or distortion which might be applied to the valve flange in attaching the same to the container, and provides a unique dispensing feel which greatly facilitates accurate dispensing.Valve 3 is configured so that whenorifice 6 snaps open, a generally constant flow rate is established therethrough, even whencontainer 2 is subjected to a relatively wide range of pressures.Valve 3 is also preferably configured such that oncedischarge orifice 6 is open, the amount of pressure required to maintain fluid flow is reduced, so as to provide greater ease of operation and control, without sacrificing secure sealing.Dispensing package 1 is particularly adapted for bottom dispensing configurations, shake containers, and other similar packaging concepts, without leakage. - The reference numeral la (
FIGS. 20-23 ) generally designates another dispensing package embodying the present invention, which is particularly adapted for dispensing product from the top of the associatedcontainer 2 a. Since dispensing package 1 a is similar to the previously described dispensingpackage 1, similar parts appearing inFIGS. 1-16 andFIGS. 17-23 respectively are represented by the same, corresponding reference numeral, except for the suffix “a” in the numerals of the latter. - The illustrated
container 2 a (FIG. 20 ) is particularly designed for top dispensing, and includes a generally flexible, oblong container body that may be integrally molded from an appropriate synthetic resin material or the like, so as to create a one-piece construction that includes oppositely oriented sidewalls 14 a and 15 a, a top 16 a, and a bottom 17 a. The container sidewalls 14 a and 15 a are laterally flexible to pressurize and depressurize the interior ofcontainer 2 a, and preferably have sufficient resiliency or stiffness that they automatically return to their original shape upon release of any external forces which are applied tocontainer 2 a to dispense afluid product 18 a therefrom. - The illustrated container top 16 a (
FIGS. 20-21 ) includes aneck 20 a, which is normally in an upwardly opening orientation when not dispensing, and defines a discharge opening 21 a about which themarginal portion 4 a of dispensingvalve 3 a is positioned. The free end ofneck 20 a includes an annularly shapedgroove 22 a having a generally L-shaped longitudinal, cross-sectional configuration, which is shaped to closely receive themarginal portion 4 a ofvalve 3 a therein. Avalve retainer ring 23 a is positionedadjacent groove 22 a, and is attached to theneck 20 a ofcontainer 2 a by a snap lock arrangement.Container base 17 a has a substantially flat, annularly shaped outer bottom 25 a adapted to abuttingly support dispensing package 1 a upright on an associated surface, such as a countertop, sink, worksurface, or the like. In the dispensing package 1 a shown inFIGS. 20-23 , dispensingvalve 3 a is positioned in a generally extended condition within dispensingpackage 2 a, as opposed to the generally recessed condition ofvalve 3 in dispensing package 1 (FIGS. 1-17 ), as described hereinabove. - With reference to
FIGS. 17-19 , the illustrateddispensing valve 3 a is generally similar to previously described dispensingvalve 3, and comprising amarginal portion 4 a, ahead portion 5 a with adischarge orifice 6 a therein, and aconnector sleeve 7 a, having one end connected withmarginal portion 4 a, and the opposite end connected withhead portion 5 a.Connector sleeve 7 a has a resiliently flexible construction, such that when pressure withincontainer 2 a is raised above a predetermined amount, thehead portion 5 a ofvalve 3 a shifts outwardly as shown inFIGS. 22 and 23 , so as to dispensefluid product 18 a therefrom. In contrast to the previously described dispensing valve 1 (FIGS. 1-17 ), theconnector sleeve 7 a of dispensingvalve 3 a does not double over and extend rollingly, but simply shifts outwardly to apply opening forces tovalve head 5 a in a manner which causesorifice 6 a to snap open, as described in greater detailed hereinafter. - The flange or
marginal portion 4 a (FIGS. 17-19 ) of the illustrateddispensing valve 3 a has an annular shape, with a substantially triangular cross-sectional configuration, comprising anupper edge 30 a, anouter edge 31 a, and abottom edge 32 a. Themarginal portion 4 a ofvalve 3 a has a thickness between top andbottom edges retainer ring 23 a to form a secure leak resistant seal therebetween. - The
head portion 5 a (FIGS. 17-19 ) of the illustrateddispensing valve 3 a has a circular plan shape, and a generally tapered construction which is thicker at the radial outside portion ofvalve head 5 a, and thinner at the radial inside portion thereof. This tapered construction assists in achieving the snap open/snap close action ofvalve 3 a, as described below. More specifically, in the illustrated example,valve head 5 a has an exterior side or surface 38 a, which has an arcuately shaped side elevational configuration that opens outwardly, toward ambient environment, and is defined by a first predetermined radius. Valvehead exterior surface 38 a extends continuously between the exterior sidewalls ofconnector sleeve 7 a.Valve head 5 a also includes an interior side or surface 39 a, which has amarginal portion 40 a with an arcuately shaped side elevational configuration which curves inwardly, toward the interior of dispensing package 1 a, and is defined by a second predetermined radius. The radius ofmarginal portion 40 a oninterior surface 39 a is larger than that ofexterior surface 38 a, such that the two surfaces converge toward the center ofvalve head 5 a at or adjoiningorifice 6 a, and provide the above-noted inwardly tapered construction ofvalve head 5 a. Theinterior surface 39 a ofvalve head 5 a also includes acenter portion 41 a, which has a circular plan shape, with a substantially planar or flat side elevational configuration, oriented generally perpendicularly to dischargeorifice 6 a. Thecenter portion 41 a ofvalve head 5 a assists in improving the opening and closing characteristics ofvalve 3 a, as set forth below.Valve head 5 a has a circularmarginal edge 42 a, which begins at theouter edge 43 a ofmarginal portion 40 a, and extends outwardly therefrom with a slight taper, ultimately merging intoconnector sleeve 7 a.Marginal edge 42 a ofvalve head 5 a is spaced radially inwardly of the adjacent upper portion ofconnector sleeve 7 a. The inner section ofmarginal portion 40 a andcenter portion 41 a ofhead portion 5 a define acircular edge 44 a. - The
connector sleeve portion 7 a of the illustrateddispensing valve 3 a has a generally J-shaped longitudinal cross-sectional shape, comprising an annular base portion in the form of afirst leg portion 46 a, and a radially inwardly cylindrical sidewall portion in the form of asecond leg portion 45 a.Connector sleeve 7 a has interior andexterior surfaces connector sleeve 7 a has a substantially uniform thickness. Oneend 49 a ofconnector sleeve 7 a is connected with thehead portion 5 a ofvalve 3 a, and theopposite end 50 a ofconnector sleeve 7 a is connected with themarginal portion 4 a ofvalve 3 a. The first andsecond leg portions connector sleeve 7 a are mutually oriented at an acute included angle, as measured between the exterior surfaces ofconnector sleeve legs FIG. 19 . The connectorsleeve leg portions arcuate portion 51 a, which facilitates movement of thehead portion 5 a ofvalve 3 a when dispensing product from thecontainer 2 a. - In the example illustrated in
FIGS. 17-19 , thefirst leg portion 46 a ofconnector sleeve 7 a is shorter than thesecond leg portion 45 a, and the included angle between them is in the range of 65-85 degrees. Also, thefirst leg portion 46 a ofconnector sleeve 7 a is oriented at an acute angle relative to the axial centerline of thehead portion 5 a, which extends throughslit 56 a. Theouter edge 42 a ofvalve 3 a is generally flat, and oriented substantially parallel with the axial centerline ofhead portion 5 a. Thesecond leg portion 45 a ofconnector sleeve 7 a is oriented at an acute angle to the axial centerline ofhead portion 5 a, at an angle in the range of 2-10 degrees. - The
connector sleeve 7 a of the illustrateddispensing valve 3 a has an inverted J-shapedend portion 49 a at the top ofleg portion 46 a, which extends arcuately into thehead portion 5 a ofvalve 3 a to further facilitate movement of thehead portion 5 a when dispensing product from thecontainer 3 a. As previously noted, theouter edge 42 a ofvalve head 5 a is spaced apart from the inside surface of the upper end ofconnector leg 45 a. This spacing betweenvalve head 5 a andconnector sleeve 7 a assists in applying torque tovalve head 5 a when dispensing product from the associated container in the manner described in detail thereinafter. The inverted J-shapedend portion 49 a of connectorsleeve leg portion 45 a loops around approximately 180 degrees to attach tovalve head portion 5 a adjacent the outer margin ofexterior surface 38 a. - In operation, dispensing package 1 a functions in the following manner.
Valve 3 a normally assumes the outwardly protruding orientation illustrated inFIG. 20 , whereinvalve 3 a remains substantially in its original molded shaped without deformation, with a major portion ofconnector sleeve 7 a as well ashead portion 5 a protruding outwardly fromsnap ring 23 a. Whenvalve 3 a is mounted in the top ofcontainer 2 a, as shown in the illustrated top dispensing package 1 a,valve 3 a is not normally subjected to the hydraulic head pressure applied thereto by thefluid product 18 a. - To dispense
product 18 a from package 1 a, the user first invertscontainer 2 a to the upside down orientation illustrated inFIGS. 21-23 . Preferably,discharge orifice 6 a is positioned directly over or aligned with the location at which thefluid product 18 a is to be dispensed. Additional pressure is then communicated with the interior ofcontainer 2 a, such as by manually flexing container sidewalls 14 a and 15 a inwardly.Connector sleeve 7 a permits thehead portion 5 a ofvalve 3 a to begin shifting axially outwardly toward the exterior of dispensing package 1 a, as illustrated inFIG. 22 . The J-shaped configuration ofconnector sleeve 7 a assists in permitting the axial shifting ofvalve head portion 5 a. The elastic deformation ofconnector sleeve 7 a from its original molded shape generates a complex pattern of stresses withinvalve 3 a which resiliently urges the same back into its original or normal configuration, which forces include an outwardly directed torque applied byconnector sleeve 7 a tohead portion 5 a, which tends to resiliently urgedischarge opening 6 toward its open position. - When additional pressure is communicated with the interior of
container 2 a, thehead portion 5 a ofvalve 3 a continues to shift outwardly by further longitudinal stretching ofconnector sleeve 7 a, and further enlargement of the plan shape ofvalve head 5 a to snap open to the fully open position illustrated inFIG. 23 in a manner similar to that described in detail hereinabove with respect to dispensingvalve 1. Since the upper end of thesecond leg portion 45 a is attached to headportion 5 a adjacent itsouter surface 38, a torque is applied tohead portion 5 a as the same shifts axially outwardly which tends to snaporifice 6 a open. The inverted J-shapedportion 49 a ofsecond leg portion 45 a assists in effectively applying these opening forces tovalve head portion 5 a. - The
reference numerals 3 b (FIG. 24 ), 3 c (FIG. 25 ), 3 d (FIG. 26 ), 3 e (FIG. 27 ) and 3 f (FIGS. 28-29 ) generally designate additional alternate embodiments of the present invention, that have slightly different dispensing valve configurations. Since dispensingvalves 3 b-3 f are similar to the previously described dispensingvalves FIGS. 1-23 and 24-29 respectively are represented by the same, corresponding reference numeral, except for the suffixes “b”-“f” respectively in the reference numerals of the later. -
Dispensing valves 3 b-3 f are each specifically designed for top dispense containers, similar to the previously described dispensingvalve 3 a, and operate in a similar manner. More specifically, dispensingvalve 3 b is similar to dispensingvalve 3 a, except that the interiorhead portion surface 40 b of dispensingvalve 3 b is completely arcuate, and lacks thecircular center portion 41 a of dispensingvalve 3 a. The radius of interiorvalve head surface 40 b is greater than that of the exteriorvalve head surface 38 b, such that valve head 5 b has a tapered configuration, which is thinner atdischarge orifice 6 b. -
Dispensing valve 3 c is similar to dispensingvalve 3 b, except that theopposite surfaces Dispensing valve 3 d is similar tovalve 3 c, except that the upper end ofconnector sleeve 7 d attaches directly to the associated head portion 5 d, without the inverted J-shape 49 c ofvalve 3 c.Dispensing valve 3 e is similar tovalve 3 a, except that the upper end ofconnector sleeve 7 e attaches directly to head portion 5 e, without the inverted J-shape 49 a ofvalve 3 a.Dispensing valve 3 f is similar tovalve 3 a, except that theinterior surface 40 f ofhead portion 5 f has a square shapeadjacent orifice 6 a, instead of thecircular shape 44 a ofvalve 3 a. - The reference numerals 3 g (
FIG. 30 ), 3 h (FIG. 31 ) and 3 i (FIG. 32 ) generally designate additional alternate dispensing valves embodying the present invention. Since dispensing valves 3 g-3 i are similar to the previously described dispensing valves 3-3 f, similar parts appearing inFIGS. 30-32 are represented by the same, corresponding reference numeral, except for the suffixes “g”-”l” respectively in the reference numerals of the later. Dispensing valves 3 g-3 i are each specifically designed for bottom dispense packaging, similar tovalve 3, and operate in a similar manner. More specifically, dispensing valve 3 g is similar to previously describedvalve 3, except that theopposite surfaces 38 g and 40 g of valve head 5 g are frustoconical, and taper to centercircular areas Dispensing valve 3 h is similar to previously described dispensing valve 3 g, except that theopposite surfaces discharge orifice 6 h, such that they lack thecircular areas Dispensing valve 3 i is similar to previously described dispensingvalve 3 h, except that theexterior surface 40 i ofhead portion 5 i is flat and oriented generally perpendicular to the central axis of thevalve 3 i. - In the foregoing description, it will be readily appreciated by those skilled in the art that modifications may be made to the invention without departing from the concepts disclosed herein. Such modifications are to be considered as included in the following claims, unless these claims by their language expressly state otherwise.
Claims (9)
1-38. (canceled)
39. A dispensing valve for fluid product packaging of the type having a container with a discharge opening therein, comprising:
a valve marginal portion;
a valve head portion including a central area with an orifice which is at least initially closed to preclude fluid flow therethrough and opens to permit fluid flow therethrough in response to a predetermined discharge pressure differential applied across the valve head portion;
a connector sleeve portion having a first end portion thereof connected with said valve marginal portion and an opposite end portion thereof connected with said valve head portion; and wherein
said connector sleeve portion comprises
(1) a first leg portion that defines (a) said first end portion of said connector sleeve portion which is connected to said valve marginal portion and (b) a second end portion, and
(2) a second leg portion that defines (a) a first end portion connected to said second end portion of said first leg portion and (b) said opposite end portion of said connector sleeve portion which is connected to said valve head portion; and wherein
said second leg portion of said connector sleeve portion is inclined radially inwardly from its first end portion at said second end portion of said first leg portion toward said connector sleeve opposite end portion at said valve head portion and extends axially outwardly to locate the entire valve head portion exterior of said valve marginal portion; and
said connector sleeve opposite end portion defined by said second leg portion includes a change of direction more toward said head portion than the rest of said second leg.
40. A dispensing valve as set forth in claim 39 , wherein:
said first leg portion of said connector sleeve portion extends generally radially inwardly and is oriented to form an acute included angle with said second leg portion of said connector sleeve portion as measured between the exterior surfaces thereof.
41. A dispensing valve as set forth in claim 39 , wherein:
said second leg portion of said connector sleeve portion is longer than said first leg portion of said connector sleeve portion.
42. A dispensing valve as set forth in claim 39 , wherein:
said first and second leg portions of said connector sleeve portion are configured to define a generally J-shaped connector sleeve portion.
43. A dispensing valve as set forth in claim 39 , wherein:
said second end portion of said second leg portion of said connector sleeve portion is connected to said valve head portion such that there is no open space between said connector sleeve portion and the periphery of said valve head portion.
44. A dispensing valve as set forth in claim, wherein:
said central area of said valve head portion is of substantially uniform thickness.
45. A dispensing valve as set forth in claim 39 , wherein:
in said valve head portion outwardly beyond said central area, said valve head portion includes at least a certain outer portion having a greater thickness than the thickness of the central area of said valve head portion.
46. A discharge valve as set forth in claim 39 , wherein:
said valve head portion has (1) an exterior surface which can interface with the external ambient environment, and (2) an interior surface which can interface with a fluid product;
said exterior surface has a generally concave shape when said orifice is in its closed position; and
said interior surface has a generally convex shape when said orifice is in its closed position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/295,840 US20070289651A1 (en) | 1991-12-06 | 2005-12-07 | Dispensing valve |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/804,086 US5213236A (en) | 1991-12-06 | 1991-12-06 | Dispensing valve for packaging |
US08/039,896 US5339995A (en) | 1991-12-06 | 1993-03-30 | Dispensing valve for packaging |
US08/240,264 US5439143A (en) | 1991-12-06 | 1994-05-10 | Dispensing valve for packaging |
US08/508,472 US5839614A (en) | 1991-12-06 | 1995-07-28 | Dispensing package |
US08/886,567 US6279783B1 (en) | 1991-12-06 | 1997-07-01 | Dispensing valve |
US09/812,129 US6427874B2 (en) | 1991-12-06 | 2001-03-19 | Dispensing valve |
US10/180,746 US7077296B2 (en) | 1991-12-06 | 2002-06-25 | Dispensing valve |
US11/295,840 US20070289651A1 (en) | 1991-12-06 | 2005-12-07 | Dispensing valve |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/180,746 Continuation US7077296B2 (en) | 1991-12-06 | 2002-06-25 | Dispensing valve |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070289651A1 true US20070289651A1 (en) | 2007-12-20 |
Family
ID=24022901
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/508,472 Expired - Lifetime US5839614A (en) | 1991-12-06 | 1995-07-28 | Dispensing package |
US08/886,567 Expired - Lifetime US6279783B1 (en) | 1991-12-06 | 1997-07-01 | Dispensing valve |
US09/812,129 Expired - Lifetime US6427874B2 (en) | 1991-12-06 | 2001-03-19 | Dispensing valve |
US10/180,746 Expired - Fee Related US7077296B2 (en) | 1991-12-06 | 2002-06-25 | Dispensing valve |
US11/295,840 Abandoned US20070289651A1 (en) | 1991-12-06 | 2005-12-07 | Dispensing valve |
Family Applications Before (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/508,472 Expired - Lifetime US5839614A (en) | 1991-12-06 | 1995-07-28 | Dispensing package |
US08/886,567 Expired - Lifetime US6279783B1 (en) | 1991-12-06 | 1997-07-01 | Dispensing valve |
US09/812,129 Expired - Lifetime US6427874B2 (en) | 1991-12-06 | 2001-03-19 | Dispensing valve |
US10/180,746 Expired - Fee Related US7077296B2 (en) | 1991-12-06 | 2002-06-25 | Dispensing valve |
Country Status (14)
Country | Link |
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US (5) | US5839614A (en) |
EP (2) | EP0869912B1 (en) |
JP (1) | JP3664445B2 (en) |
KR (1) | KR19990035982A (en) |
CN (5) | CN102225710A (en) |
AT (2) | ATE414653T1 (en) |
AU (1) | AU716586B2 (en) |
CA (1) | CA2227888C (en) |
CO (1) | CO4520162A1 (en) |
DE (2) | DE69637758D1 (en) |
ES (2) | ES2316890T3 (en) |
IL (1) | IL123084A0 (en) |
MX (1) | MX9800642A (en) |
WO (1) | WO1997005055A1 (en) |
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US7874466B2 (en) | 2006-11-07 | 2011-01-25 | The Procter & Gamble Company | Package comprising push-pull closure and slit valve |
WO2010025826A2 (en) * | 2008-09-02 | 2010-03-11 | Scienion Ag | Pressure control member, in particular a ventilating valve for ventilating a microdispenser |
WO2010025826A3 (en) * | 2008-09-02 | 2010-04-29 | Scienion Ag | Pressure control member, in particular a ventilating valve for ventilating a microdispenser |
US9085409B2 (en) | 2011-04-14 | 2015-07-21 | Aptar Radolfzell Gmbh | Dispensing head for a tube and tube having a dispensing head |
CN103781708A (en) * | 2011-09-13 | 2014-05-07 | 万通集团公司 | Dispensing valve |
USD720622S1 (en) | 2011-11-30 | 2015-01-06 | Tc Heartland Llc | Bottle with cap |
USD738732S1 (en) | 2011-11-30 | 2015-09-15 | Tc Heartland Llc | Bottle with cap |
USD817175S1 (en) | 2011-11-30 | 2018-05-08 | Tc Heartland Llc | Bottle and cap |
USD932902S1 (en) | 2011-11-30 | 2021-10-12 | Tc Heartland Llc | Bottle with cap |
US10287066B2 (en) | 2012-03-16 | 2019-05-14 | Aptargroup, Inc. | Dispensing valve |
WO2015061454A1 (en) * | 2013-10-24 | 2015-04-30 | Ecolab Usa Inc. | Single piece three-way elastomeric valve |
US10315025B2 (en) | 2013-12-10 | 2019-06-11 | Applied Medical Technology, Inc. | Auto-shutoff coupling |
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Legal Events
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |