CA2048474C - Fluid dispenser - Google Patents
Fluid dispenserInfo
- Publication number
- CA2048474C CA2048474C CA002048474A CA2048474A CA2048474C CA 2048474 C CA2048474 C CA 2048474C CA 002048474 A CA002048474 A CA 002048474A CA 2048474 A CA2048474 A CA 2048474A CA 2048474 C CA2048474 C CA 2048474C
- Authority
- CA
- Canada
- Prior art keywords
- inner bag
- orifice
- valve
- margin
- dispenser
- 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.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 29
- 239000003380 propellant Substances 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims 2
- 239000000446 fuel Substances 0.000 abstract description 12
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 11
- 229930195733 hydrocarbon Natural products 0.000 abstract description 11
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 11
- -1 polyethylene Polymers 0.000 description 8
- 239000004698 Polyethylene Substances 0.000 description 7
- 229920000573 polyethylene Polymers 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 210000002445 nipple Anatomy 0.000 description 4
- 239000013536 elastomeric material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229920003051 synthetic elastomer Polymers 0.000 description 3
- 239000005061 synthetic rubber Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229920006284 nylon film Polymers 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
- B65D83/60—Contents and propellant separated
- B65D83/62—Contents and propellant separated by membrane, bag, or the like
-
- 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
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C1/00—Hand-held nailing tools; Nail feeding devices
- B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
Abstract
A dispenser for a dispensable fluid, such as hydrocarbon fuel, of a type comprising an outer canister containing a pressurized propellant, an inner bag containing the dispensable fluid, and a normally closed valve. The inner bag has a flexible wall with an orifice having a margin. Two clamping members, which may be snap-fitted to each other, clamp the valve to the inner bag at the margin of the orifice. A resilient washer is disposed outside the inner bag, in intimate contact between one of the clamping members and the margin of the orifice, so as to form a fluid-tight seal around the orifice.
Description
FLUID DISPENSER 2 0 4 ~ 4 7 4 Technical Field of the Invention This invention relates to improvements in a dispenser for a dispensable fluid, such as a hydrocarbon fuel, of a type comprising an outer canister containing a pressurized propellant, an inner bag containing the dispensable fluid, and a normally closed valve enabling the dispensable fluid to be controllably dispensed from the inner bag. This invention provides that the inner bag is clamped to the normally closed valve.
Backqround of the Invention As exemplified in Nikolich U.S. Patents No.
4,403,722, No. 4,483,474, and No. 4,522,162, it is known to use a dispenser of the type noted above to dispense a hydrocarbon fuel to a combustion gas-powered tool, such as a combustion gas-powered fastener-driving tool. Such fastener-driving tools and such fuel dispensers therefor are available commercially from ITW-Paslode (a division of Illinois Tool Works Inc.) of Lincolnshire, Illinois, under its IMPULSET trademark.
Typically, the inner bag of such a dispenser is made from a flexible, laminated, multi-layer sheet.
The sheet may have an outermost layer of nylon film, an intermediate layer of aluminum foil, and an innermost layer of polyethylene film with-suitable bonding layers between the aluminum and other layers. The polyethylene layer, which before heat-sealing is oriented, can be heat-sealed to itself.
Typically, moreover, the valve assembly includes a tubular part, which is molded from polyethylene, and which extends into the inner bag. It is known for the inner bag to be heat-sealed, at one of its seams, around and to such a part.
However, if the dispensable fluid is a hydrocarbon fuel, special sealing problems arise whereupon it may not be entirely satisfactory for the -inner bag to be heat-sealed, at one of its seams, around and to such a part. A better way to mount the inner bag is required, particularly but not exclusively if the dispensable fluid is a hydrocarbon fuel.
Accordingly, this invention is addressed to improvements in a fluid dispenser of the type noted above, particularly but not exclusively such a dispenser for a hydrocarbon fuel.
Summary of the Invention This invention provides improvements in a dispenser for a dispensable fluid, which may be a hydrocarbon fuel or another similar or dissimilar fluid of the type comprising an outer canister having a mouth and containing a pressurized propellant, an inner bag disposed within the outer canister and valve assembly including a normally closed valve closing the mouth of the outer canister and communicating with the inner bag for enabling the inner bag to retain the dispensable fluid therein when the valve is at a closed position and for enabling the pressurized propellant to collapse the inner bag in such a manner that the dispensable fluid is propelled from the inner bag through the valve when the valve is at an opened position. The inner bag comprises a flexible wall with an orifice having a margin defined around the orifice, the inner bag being entirely sealed except at the orifice. The valve assembly includes first and second portions mechanically engaged directly with each other and clamping the margin of the inner bag therebetween by engaging inner and outer surface portions of the margin of the inner bag at an axial position of the valve assembly which is axially remote from the valve of the valve assembly so as to secure the valve to the flexible wall of the inner bag at the margin of the inner bag flexible wall surrounding the orifice and for forming a substantially fluid-tight seal around the orifice.
~-.
Preferably, the valve assembly includes two clamping members, which are connected mechanically to each other in such manner that the valve is clamped to the flexible sheet used to make the inner bag at the margin of the orifice. One such clamping member is disposed at least partly inside the inner bag. The other clamping member is disposed at least partly outside the inner bag. The latter clamping member is connected structurally to the valve. It is preferred that a resilient washer is disposed in intimate contact between one of the clamping members and the margin of the orifice, preferably between the latter clamping member and the margin of the o~ifice, so as to form a substantially fluid-tight seal around the orifice.
lS One of the clamping members may have a tubular portion extending through the orifice, whereupon it also may have an annular portion integral with the tubular portion, and whereupon the other clamping member may have an annular portion disposed around the tubular portion. The resilient washer may be then disposed between the annular portion of one of the clamping members and the margin of the orifice.
Preferably, the annular portion of the clamping member having the tubular portion is disposed inside the inner bag, and the annular portion of the other clamping me~ber is disposed outside the inner bag and is connected structurally to the valve. It is preferred for the resilient washer to be then disposed between the latter annular portion, which is disposed outside the inner bag, and the margin of the orifice.
It is preferred that the clamping members are adapted to be snap-fitted to each other. It is contemplated by this invention, however, that the clamping members may be threadably connected to each other or may be mechanically connected in some other manner to each other.
_ 4 _ 2 0 g 8 4 74 These and other objects,-features, and advantages of this invention are evident from the following description of a preferred embodiment of this invention with reference to the accompanying drawings.
Brief Description of the Drawin~s Figure 1 is a perspective partly cut-away view of a fluid dispenser constituting a preferred embodiment of this invention and comprising an outer container, an inner bag formed from a laminated sheet, and a valve assembly. The inner bag is shown in an empty condition.
Figure 2 is an elevational view of the inner bag and the valve assembly, apart from the outer container, with the inner bag shown in a flattened, empty condition.
Figure 3 is a plan view of the sheet used to form the inner bag and the valve asse~bly, apart from the outer container, and before the inner bag is formed.
Figure 4 is a fragmentary, sectional view taken along line 4--4 of Figure 1, in a direction indicated by arrows, with the valve assembly shown in a normal, closed condition.
Figure 5 is a fragmentary, sectional view similar to Figure 4, but with the valve assembly shown in a changed, opened condition.
Figure 6 is a fragmentary sectional view analogous to Figures 4 and 5 but taken to show an alternate embodiment of this invention.
Detailed DescriPtion of Preferred Embodiment A preferred embodiment of this invention is illustrated in the drawings and is to be hereinafter described. It should be here understood that the illustrated embodiment is exemplary and that this - invention is not limited to such an embodiment.
As shown in Figure 1, a dispenser 10 for a dispensable fluid, such as a hydrocarbon fuel, constitutes a preferred embodiment of this invention. ~ -_ 5 - - 20~74 The dispenser 10 may be advantageously employed in a combustion gas-powered fastener-driving tool, as exemplified in the Nikolich patents noted above. The dispenser 10 may be alternatively employed in any of a wide variety of similar and dissimilar applications.
Broadly, the dispenser 10 comprises an outer canister 12, an inner bag 14, and a valve assembly 16.
The outer canister 12 may be conventionally made by a deep-drawing process or otherwise from aluminum, which is preferred, or steel. The valve assembly 16 closes an upper mouth 18 of the outer canister 12 and supports the inner bag 14 within the outer canister 12 so that the outer canister 12 is adapted to contain a pressurized propellant, such as propane or carbon dioxide, which tends to collapse the inner bag 14.
The valve assembly 16 includes a cover 20, which may be conventionally made from the metal used for the outer canister 12. The cover 20 is connected in a known manner to the outer canister 12, at a rolled seam 22 defining the upper mouth 18 and incorporating a resilient gasket 24. The resilient gasket 24 causes the rolled seam 22 to be substantially fluid-tight. An elastomeric material tending to be substantially impervious to the pressurized propellant is used for the resilient gasket 24, BUNA N synthetic rubber being preferred. The cover 20 has a rolled edge 26 defining a central aperture 28.
Moreover, the valve assembly 16 includes a tubular valve body 30, a valve stem 32, a resilie~t washer 34, and a coiled spring 36, as assembled to provide a normally closed valve 38. The tubular valve body 30 and the valve stem 32 may be advantageously molded from a suitable polymer, such as polyethylene, which is preferred.
The tubular valve body 30 is molded so as to have, at its lower end, an annular flange 40 extending - 6 - 209~47~
inwardly in a radial sense and defining a central orifice 42, and so as to have, at its upper end, an annular boss 44 extending outwardly in a radial sense and upwardly and defining an annular recess 46.
Moreover, the tubular valve body 30 is molded so as to have, along its inner wall, axially extending ribs 48, each terminating in a lower step 50 extending inwardly in a radial sense. Two such ribs 48 are shown, in diametric opposition to each other. More such ribs 48 may be optionally provided, in circumferentially spaced relation to one another.
The resilient washer 34 fits into the annular recess 46 and is retained therein by the cover 20, which partly overlies the resilient washer 34, and which is rolled partly under the annular boss 44. As retained therein, the resilient washer 34 is compressed slightly near its outer edge. An elastomeric material tending to be substantially impervious to the hydrocarbon fuel or other dispensable fluid it used for the resilient washer 34, BUNA N synthetic rubber being preferred.
The valve stem 32, which defines an axis, has an upper, tubular portion 52, an intermediate, annular portion 54, and a lower, rod~ e portion 56. The upper, tubular portion 52 extends through the resilient washer 34 and through the central aperture 28 of the cover 20, with sufficient clearance to permit axial movement of the upper, tubular portion 52 relative to the resilient washer 34 and relative to the cover 20.
The upper tubular portion 52 has a pair of radial, small diameter, oppositely extending passageways 58.
The coiled spring 36 is disposed around the lower, rod-like portion 56, so as to be axially compressed between the intermediate, annular portion 54 and the lower steps 50 of the axially extending ribs 48.
Thus, the coiled spring 36 biases the valve stem 32 ~ 7 ~ 204~174 upwardly, so as to press the intermediate, annular portion 54 upwardly against the resilient washer 34.
Therefore, when the intermediate, annular portion 54 is pressed upwardly against the resilient washer 34, the passageways 58 are closed at their outer ends by the resilient washer 34, whereby the valve 38 is closed. However, when the valve stem 32 is pressed downwardlyj so as to separate the intermediate, annular portion 54 from the resilient washer 34, the passageways 58 are moved below the resilient washer 34, whereby the valve 38 is opened. The valve stem 32 may be so pressed, in a known manner, by an actuator (not shown) included in a combustion gas-powered fastener-driving tool, as discussed above.
The inner bag 14 is similar to known bags for fluid dispensers in being made from a single, flexible, laminated sheet 60. The sheet 60 has an outermost layer of nylon film, an intermediate layer of aluminum foil, and an innermost layer of polyethylene film with bonding layers of ethylene vinyl acetate between the aluminum and other layers. The polyethylene layer, which before heat-sealing is oriented, can be heat-sealed to itself.
The inner bag 14 is different from known bags for fluid dispensers in being folded, not heat-sealed, along an upper edge 62. The inner bag 14 is heat-sealed, in a known manner., along two lateral edges 64, 66, and along a bottom edge 68.
Moreover, the inner bag 14 is.different from known bags for fluid dispenser- in being provided with a circular orifice 70, where the sheet 60 is folded along the upper edge 62. The orifice 70 has a margin 72 spaced from the lateral edges 64, 66, approximately half-way between such edges. The inner bag 14 is heat-sealed so as to be substantially impervious to the hydrocarbon fuel or other dispensable fluid, except at the orifice 70, which is used (via the valve 38) to - 8 - 2048~74 charge the inner bag 14 with the dispensable fluid and to empty the inner bag 14.
The valve assembly 1-6 includes two clamping members, which are connected mechanically to each other in such manner that the valve 38 is clamped to the flexible sheet 60 at the margin 72 of the orifice 70.
The annular flange 40 of the tubular valve body 30 and a tubular clamping member 80 to be next described constitute the clamping members.
At its respective ends, the tubular clamping member 80 has an annular flange 82 and an annular boss 84. Before the inner bag 14 is heat-sealed at all of its lateral and bottom edges, the tubular clamping member ~0 is passed through the orifice 70 in such manner that, when the inner bag 14 is heat-sealed thereat, the annular flange 82 is disposed within the inner bag 14. A resilient washer 90 is disposed around the tubular clamping member 80, outside the inner bag 14, in intimate contact with the margin 72 of the orifice 70. An elastomeric material tending to be substantially impervious to the hydrocarbon fuel or other dispensable fluid is used for the resilient washer 90, BUNA N synthetic rubber being preferred.
It is contemplated by this invention that the resilient washer 90 may be alternatively disposed around the tubular clamping member 80, inside the inner bag 14, in intimate contact between the annular flange 82 and the margin 72 of the orifice 70. Also, it is contemplated by this invention that the tubular clamping member 80 may be axially longer, that the resilient washer 90 may be thus disposed around the tubular clamping member 80, outside the inner bag 14, in intimate contact with the margin 72 of the orifice 70, and that a similar washer (not shown) may be also disposed around the tubular clamping member 80, inside - 9 - 2048~74 the inner bag 14, in intimatè contact between the annular flange 82 and the margin 72 of the orifice 70.
The tubular clamping member 80 with the resilient washer 90 disposed around it, outside the inner bag 14, is pushed through the orifice 42 of the annular flange 40 in such manner that the annular boss 84 snaps over the annular flange 40. As mentioned above, the tubular valve body 30 is molded from a polymeric material, such as polyethylene. The tubular element 80 is molded from a similar material. Such a material has sufficient resiliency and the tubular clamping member 80 and the tubular valve body 30 have suitable shapes to adapt the tubular clamping member 80 and the tubular valve body 30 to be snap-fitted to each other.
Thus, a snap-fitted, mechanical connection is formed between the tubular element 80 and the annular flange 40. Also, it is contemplated by this invention - that a threaded, mechanical connection may be alternatively formed between male threads (not shown) on the tubular element 80 and female threads (not shown) on the annular flange 40.
As shown in Figure 6, an alternate embodiment is similar to the preferred embodiment shown in Figures 1 through 5, except as noted herein. The alternate embodiment utilizes an inner bag 100, which is similar to the inner bag-14, except that the orifice 102 of the inner bag 100 is larger than the orifice 70 of the inner bag 14. The orifice 102 has a margin 104 analogous to the margin 72 of the orifice 70.
In the alternate embodiment, a tubular valve body 110 is similar to the tubular valve body 30, except that the tubular valve body 110 is formed integrally with a tubular nipple 112 extending downwardly. At its 3S lower end, the tubular nipple 112~has an annular boss 114. At its respective ends, a tubular clamping member - lO 20~8~74 120, which is analogous to the tubular clamping member 80, has an annular flange 122 and an annular boss 124.
The annular clamping member 120 has an internal, annular groove 126 and an external., annular boss 128. A
S clamping ring 130 is provided, which has no counterpart in the preferred embodiment. A resilient washer 140 is provided, which is analogous to the resilient washer 90.
The tubular clamping member 120 with the resilient washer 140 disposed around it, inside the inner bag 100, is pushed through the orifice 102,.
whereupon the clamping ring 130 is snapped over the tubular clamping member 120, between the annular boss 128 and the margin 104 of the orifice 102. Thus, the resilient washer 140 is compressed slightly, between the clamping ring 130 and the annular flange 122 of the tubular clamping member 120.
Thereupon, the tubular clamping member 130 is telescoped over the tubular nipple 112 until the annular boss 114 snaps into the annular groove 126,~so as to form a mechanical connection between the tubular nipple 112 and the tubular clamping member 130, to which the inner bag 100 is clamped by the clamping ring 130 and the resilient washer 140.
Various modifications may be made to either of the described embodiments without departing from the scope and spirit of this invention.
Backqround of the Invention As exemplified in Nikolich U.S. Patents No.
4,403,722, No. 4,483,474, and No. 4,522,162, it is known to use a dispenser of the type noted above to dispense a hydrocarbon fuel to a combustion gas-powered tool, such as a combustion gas-powered fastener-driving tool. Such fastener-driving tools and such fuel dispensers therefor are available commercially from ITW-Paslode (a division of Illinois Tool Works Inc.) of Lincolnshire, Illinois, under its IMPULSET trademark.
Typically, the inner bag of such a dispenser is made from a flexible, laminated, multi-layer sheet.
The sheet may have an outermost layer of nylon film, an intermediate layer of aluminum foil, and an innermost layer of polyethylene film with-suitable bonding layers between the aluminum and other layers. The polyethylene layer, which before heat-sealing is oriented, can be heat-sealed to itself.
Typically, moreover, the valve assembly includes a tubular part, which is molded from polyethylene, and which extends into the inner bag. It is known for the inner bag to be heat-sealed, at one of its seams, around and to such a part.
However, if the dispensable fluid is a hydrocarbon fuel, special sealing problems arise whereupon it may not be entirely satisfactory for the -inner bag to be heat-sealed, at one of its seams, around and to such a part. A better way to mount the inner bag is required, particularly but not exclusively if the dispensable fluid is a hydrocarbon fuel.
Accordingly, this invention is addressed to improvements in a fluid dispenser of the type noted above, particularly but not exclusively such a dispenser for a hydrocarbon fuel.
Summary of the Invention This invention provides improvements in a dispenser for a dispensable fluid, which may be a hydrocarbon fuel or another similar or dissimilar fluid of the type comprising an outer canister having a mouth and containing a pressurized propellant, an inner bag disposed within the outer canister and valve assembly including a normally closed valve closing the mouth of the outer canister and communicating with the inner bag for enabling the inner bag to retain the dispensable fluid therein when the valve is at a closed position and for enabling the pressurized propellant to collapse the inner bag in such a manner that the dispensable fluid is propelled from the inner bag through the valve when the valve is at an opened position. The inner bag comprises a flexible wall with an orifice having a margin defined around the orifice, the inner bag being entirely sealed except at the orifice. The valve assembly includes first and second portions mechanically engaged directly with each other and clamping the margin of the inner bag therebetween by engaging inner and outer surface portions of the margin of the inner bag at an axial position of the valve assembly which is axially remote from the valve of the valve assembly so as to secure the valve to the flexible wall of the inner bag at the margin of the inner bag flexible wall surrounding the orifice and for forming a substantially fluid-tight seal around the orifice.
~-.
Preferably, the valve assembly includes two clamping members, which are connected mechanically to each other in such manner that the valve is clamped to the flexible sheet used to make the inner bag at the margin of the orifice. One such clamping member is disposed at least partly inside the inner bag. The other clamping member is disposed at least partly outside the inner bag. The latter clamping member is connected structurally to the valve. It is preferred that a resilient washer is disposed in intimate contact between one of the clamping members and the margin of the orifice, preferably between the latter clamping member and the margin of the o~ifice, so as to form a substantially fluid-tight seal around the orifice.
lS One of the clamping members may have a tubular portion extending through the orifice, whereupon it also may have an annular portion integral with the tubular portion, and whereupon the other clamping member may have an annular portion disposed around the tubular portion. The resilient washer may be then disposed between the annular portion of one of the clamping members and the margin of the orifice.
Preferably, the annular portion of the clamping member having the tubular portion is disposed inside the inner bag, and the annular portion of the other clamping me~ber is disposed outside the inner bag and is connected structurally to the valve. It is preferred for the resilient washer to be then disposed between the latter annular portion, which is disposed outside the inner bag, and the margin of the orifice.
It is preferred that the clamping members are adapted to be snap-fitted to each other. It is contemplated by this invention, however, that the clamping members may be threadably connected to each other or may be mechanically connected in some other manner to each other.
_ 4 _ 2 0 g 8 4 74 These and other objects,-features, and advantages of this invention are evident from the following description of a preferred embodiment of this invention with reference to the accompanying drawings.
Brief Description of the Drawin~s Figure 1 is a perspective partly cut-away view of a fluid dispenser constituting a preferred embodiment of this invention and comprising an outer container, an inner bag formed from a laminated sheet, and a valve assembly. The inner bag is shown in an empty condition.
Figure 2 is an elevational view of the inner bag and the valve assembly, apart from the outer container, with the inner bag shown in a flattened, empty condition.
Figure 3 is a plan view of the sheet used to form the inner bag and the valve asse~bly, apart from the outer container, and before the inner bag is formed.
Figure 4 is a fragmentary, sectional view taken along line 4--4 of Figure 1, in a direction indicated by arrows, with the valve assembly shown in a normal, closed condition.
Figure 5 is a fragmentary, sectional view similar to Figure 4, but with the valve assembly shown in a changed, opened condition.
Figure 6 is a fragmentary sectional view analogous to Figures 4 and 5 but taken to show an alternate embodiment of this invention.
Detailed DescriPtion of Preferred Embodiment A preferred embodiment of this invention is illustrated in the drawings and is to be hereinafter described. It should be here understood that the illustrated embodiment is exemplary and that this - invention is not limited to such an embodiment.
As shown in Figure 1, a dispenser 10 for a dispensable fluid, such as a hydrocarbon fuel, constitutes a preferred embodiment of this invention. ~ -_ 5 - - 20~74 The dispenser 10 may be advantageously employed in a combustion gas-powered fastener-driving tool, as exemplified in the Nikolich patents noted above. The dispenser 10 may be alternatively employed in any of a wide variety of similar and dissimilar applications.
Broadly, the dispenser 10 comprises an outer canister 12, an inner bag 14, and a valve assembly 16.
The outer canister 12 may be conventionally made by a deep-drawing process or otherwise from aluminum, which is preferred, or steel. The valve assembly 16 closes an upper mouth 18 of the outer canister 12 and supports the inner bag 14 within the outer canister 12 so that the outer canister 12 is adapted to contain a pressurized propellant, such as propane or carbon dioxide, which tends to collapse the inner bag 14.
The valve assembly 16 includes a cover 20, which may be conventionally made from the metal used for the outer canister 12. The cover 20 is connected in a known manner to the outer canister 12, at a rolled seam 22 defining the upper mouth 18 and incorporating a resilient gasket 24. The resilient gasket 24 causes the rolled seam 22 to be substantially fluid-tight. An elastomeric material tending to be substantially impervious to the pressurized propellant is used for the resilient gasket 24, BUNA N synthetic rubber being preferred. The cover 20 has a rolled edge 26 defining a central aperture 28.
Moreover, the valve assembly 16 includes a tubular valve body 30, a valve stem 32, a resilie~t washer 34, and a coiled spring 36, as assembled to provide a normally closed valve 38. The tubular valve body 30 and the valve stem 32 may be advantageously molded from a suitable polymer, such as polyethylene, which is preferred.
The tubular valve body 30 is molded so as to have, at its lower end, an annular flange 40 extending - 6 - 209~47~
inwardly in a radial sense and defining a central orifice 42, and so as to have, at its upper end, an annular boss 44 extending outwardly in a radial sense and upwardly and defining an annular recess 46.
Moreover, the tubular valve body 30 is molded so as to have, along its inner wall, axially extending ribs 48, each terminating in a lower step 50 extending inwardly in a radial sense. Two such ribs 48 are shown, in diametric opposition to each other. More such ribs 48 may be optionally provided, in circumferentially spaced relation to one another.
The resilient washer 34 fits into the annular recess 46 and is retained therein by the cover 20, which partly overlies the resilient washer 34, and which is rolled partly under the annular boss 44. As retained therein, the resilient washer 34 is compressed slightly near its outer edge. An elastomeric material tending to be substantially impervious to the hydrocarbon fuel or other dispensable fluid it used for the resilient washer 34, BUNA N synthetic rubber being preferred.
The valve stem 32, which defines an axis, has an upper, tubular portion 52, an intermediate, annular portion 54, and a lower, rod~ e portion 56. The upper, tubular portion 52 extends through the resilient washer 34 and through the central aperture 28 of the cover 20, with sufficient clearance to permit axial movement of the upper, tubular portion 52 relative to the resilient washer 34 and relative to the cover 20.
The upper tubular portion 52 has a pair of radial, small diameter, oppositely extending passageways 58.
The coiled spring 36 is disposed around the lower, rod-like portion 56, so as to be axially compressed between the intermediate, annular portion 54 and the lower steps 50 of the axially extending ribs 48.
Thus, the coiled spring 36 biases the valve stem 32 ~ 7 ~ 204~174 upwardly, so as to press the intermediate, annular portion 54 upwardly against the resilient washer 34.
Therefore, when the intermediate, annular portion 54 is pressed upwardly against the resilient washer 34, the passageways 58 are closed at their outer ends by the resilient washer 34, whereby the valve 38 is closed. However, when the valve stem 32 is pressed downwardlyj so as to separate the intermediate, annular portion 54 from the resilient washer 34, the passageways 58 are moved below the resilient washer 34, whereby the valve 38 is opened. The valve stem 32 may be so pressed, in a known manner, by an actuator (not shown) included in a combustion gas-powered fastener-driving tool, as discussed above.
The inner bag 14 is similar to known bags for fluid dispensers in being made from a single, flexible, laminated sheet 60. The sheet 60 has an outermost layer of nylon film, an intermediate layer of aluminum foil, and an innermost layer of polyethylene film with bonding layers of ethylene vinyl acetate between the aluminum and other layers. The polyethylene layer, which before heat-sealing is oriented, can be heat-sealed to itself.
The inner bag 14 is different from known bags for fluid dispensers in being folded, not heat-sealed, along an upper edge 62. The inner bag 14 is heat-sealed, in a known manner., along two lateral edges 64, 66, and along a bottom edge 68.
Moreover, the inner bag 14 is.different from known bags for fluid dispenser- in being provided with a circular orifice 70, where the sheet 60 is folded along the upper edge 62. The orifice 70 has a margin 72 spaced from the lateral edges 64, 66, approximately half-way between such edges. The inner bag 14 is heat-sealed so as to be substantially impervious to the hydrocarbon fuel or other dispensable fluid, except at the orifice 70, which is used (via the valve 38) to - 8 - 2048~74 charge the inner bag 14 with the dispensable fluid and to empty the inner bag 14.
The valve assembly 1-6 includes two clamping members, which are connected mechanically to each other in such manner that the valve 38 is clamped to the flexible sheet 60 at the margin 72 of the orifice 70.
The annular flange 40 of the tubular valve body 30 and a tubular clamping member 80 to be next described constitute the clamping members.
At its respective ends, the tubular clamping member 80 has an annular flange 82 and an annular boss 84. Before the inner bag 14 is heat-sealed at all of its lateral and bottom edges, the tubular clamping member ~0 is passed through the orifice 70 in such manner that, when the inner bag 14 is heat-sealed thereat, the annular flange 82 is disposed within the inner bag 14. A resilient washer 90 is disposed around the tubular clamping member 80, outside the inner bag 14, in intimate contact with the margin 72 of the orifice 70. An elastomeric material tending to be substantially impervious to the hydrocarbon fuel or other dispensable fluid is used for the resilient washer 90, BUNA N synthetic rubber being preferred.
It is contemplated by this invention that the resilient washer 90 may be alternatively disposed around the tubular clamping member 80, inside the inner bag 14, in intimate contact between the annular flange 82 and the margin 72 of the orifice 70. Also, it is contemplated by this invention that the tubular clamping member 80 may be axially longer, that the resilient washer 90 may be thus disposed around the tubular clamping member 80, outside the inner bag 14, in intimate contact with the margin 72 of the orifice 70, and that a similar washer (not shown) may be also disposed around the tubular clamping member 80, inside - 9 - 2048~74 the inner bag 14, in intimatè contact between the annular flange 82 and the margin 72 of the orifice 70.
The tubular clamping member 80 with the resilient washer 90 disposed around it, outside the inner bag 14, is pushed through the orifice 42 of the annular flange 40 in such manner that the annular boss 84 snaps over the annular flange 40. As mentioned above, the tubular valve body 30 is molded from a polymeric material, such as polyethylene. The tubular element 80 is molded from a similar material. Such a material has sufficient resiliency and the tubular clamping member 80 and the tubular valve body 30 have suitable shapes to adapt the tubular clamping member 80 and the tubular valve body 30 to be snap-fitted to each other.
Thus, a snap-fitted, mechanical connection is formed between the tubular element 80 and the annular flange 40. Also, it is contemplated by this invention - that a threaded, mechanical connection may be alternatively formed between male threads (not shown) on the tubular element 80 and female threads (not shown) on the annular flange 40.
As shown in Figure 6, an alternate embodiment is similar to the preferred embodiment shown in Figures 1 through 5, except as noted herein. The alternate embodiment utilizes an inner bag 100, which is similar to the inner bag-14, except that the orifice 102 of the inner bag 100 is larger than the orifice 70 of the inner bag 14. The orifice 102 has a margin 104 analogous to the margin 72 of the orifice 70.
In the alternate embodiment, a tubular valve body 110 is similar to the tubular valve body 30, except that the tubular valve body 110 is formed integrally with a tubular nipple 112 extending downwardly. At its 3S lower end, the tubular nipple 112~has an annular boss 114. At its respective ends, a tubular clamping member - lO 20~8~74 120, which is analogous to the tubular clamping member 80, has an annular flange 122 and an annular boss 124.
The annular clamping member 120 has an internal, annular groove 126 and an external., annular boss 128. A
S clamping ring 130 is provided, which has no counterpart in the preferred embodiment. A resilient washer 140 is provided, which is analogous to the resilient washer 90.
The tubular clamping member 120 with the resilient washer 140 disposed around it, inside the inner bag 100, is pushed through the orifice 102,.
whereupon the clamping ring 130 is snapped over the tubular clamping member 120, between the annular boss 128 and the margin 104 of the orifice 102. Thus, the resilient washer 140 is compressed slightly, between the clamping ring 130 and the annular flange 122 of the tubular clamping member 120.
Thereupon, the tubular clamping member 130 is telescoped over the tubular nipple 112 until the annular boss 114 snaps into the annular groove 126,~so as to form a mechanical connection between the tubular nipple 112 and the tubular clamping member 130, to which the inner bag 100 is clamped by the clamping ring 130 and the resilient washer 140.
Various modifications may be made to either of the described embodiments without departing from the scope and spirit of this invention.
Claims (13)
1. A dispenser for a dispensable fluid, comprising:
an outer canister having a mouth and containing a pressurized propellant;
an inner bag disposed within said outer canister; and valve assembly means including a normally closed valve closing said mouth of said outer canister and communicating with said inner bag for enabling said inner bag to retain said dispensable fluid therein when said valve is at a closed position and for enabling said pressurized propellant to collapse said inner bag in such a manner that said dispensable fluid is propelled from said inner bag through said valve when said valve is at an opened position;
said inner bag comprising a flexible wall with an orifice having a margin defined around said orifice, said inner bag being entirely sealed except at said orifice; and said valve assembly means including first and second portions mechanically engaged directly with each other and clamping said margin of said inner bag therebetween by engaging inner and outer surface portions of said margin of said inner bag at an axial position of said valve assembly means which is axially remote from said valve of said valve assembly means so as to secure said valve to said flexible wall of said inner bag at said margin of said inner bag flexible wall surrounding said orifice and for forming a substantially fluid-tight seal around said orifice.
an outer canister having a mouth and containing a pressurized propellant;
an inner bag disposed within said outer canister; and valve assembly means including a normally closed valve closing said mouth of said outer canister and communicating with said inner bag for enabling said inner bag to retain said dispensable fluid therein when said valve is at a closed position and for enabling said pressurized propellant to collapse said inner bag in such a manner that said dispensable fluid is propelled from said inner bag through said valve when said valve is at an opened position;
said inner bag comprising a flexible wall with an orifice having a margin defined around said orifice, said inner bag being entirely sealed except at said orifice; and said valve assembly means including first and second portions mechanically engaged directly with each other and clamping said margin of said inner bag therebetween by engaging inner and outer surface portions of said margin of said inner bag at an axial position of said valve assembly means which is axially remote from said valve of said valve assembly means so as to secure said valve to said flexible wall of said inner bag at said margin of said inner bag flexible wall surrounding said orifice and for forming a substantially fluid-tight seal around said orifice.
2. A dispenser as set forth in claim 1, further comprising:
cover means having an outer peripheral portion thereof fixedly mounted upon said outer canister;
recess means defined within said cover means; and a valve body, within which said valve is reciprocably movable between said opened and closed positions, fixedly mounted within said recess means of said cover means.
cover means having an outer peripheral portion thereof fixedly mounted upon said outer canister;
recess means defined within said cover means; and a valve body, within which said valve is reciprocably movable between said opened and closed positions, fixedly mounted within said recess means of said cover means.
3. A dispenser for a dispensable fluid, comprising:
an outer canister having a mouth and containing a pressurized propellant;
an inner bag disposed with said outer canister; and valve assembly means including a normally closed valve closing said mouth of said outer canister and communicating with said inner bag for enabling said inner bag to retain said dispensable fluid when said valve is closed at a position and for enabling said pressurized propellant to collapse said inner bag in such a manner that said dispensable fluid is propelled from said inner bag through said valve when said valve is at an opened position;
said inner bag comprising a flexible wall with an orifice having a margin defined around said orifice, said inner bag being entirely sealed except at said orifice; and said valve assembly means including two clamping components mechanically engaged directly with each other in such a manner that said valve assembly means is clamped to said flexible wall of said inner bag at said margin of said orifice at an axial position of said valve assembly means which is axially remote from said valve of said valve assembly means so as to secure said valve to said flexible wall of said inner bag at said margin of said inner bag flexible wall surrounding said orifice, namely, a first clamping component disposed at least partly inside said inner bag and engaging an inner surface portion of said margin of said inner bag flexible wall surrounding said orifice and a second clamping component disposed at least partly outside said inner bag and engaging an outer surface portion of said margin of said inner bag flexible wall surrounding said orifice, said valve assembly means thereby forming a substantially fluid-tight seal around said orifice.
an outer canister having a mouth and containing a pressurized propellant;
an inner bag disposed with said outer canister; and valve assembly means including a normally closed valve closing said mouth of said outer canister and communicating with said inner bag for enabling said inner bag to retain said dispensable fluid when said valve is closed at a position and for enabling said pressurized propellant to collapse said inner bag in such a manner that said dispensable fluid is propelled from said inner bag through said valve when said valve is at an opened position;
said inner bag comprising a flexible wall with an orifice having a margin defined around said orifice, said inner bag being entirely sealed except at said orifice; and said valve assembly means including two clamping components mechanically engaged directly with each other in such a manner that said valve assembly means is clamped to said flexible wall of said inner bag at said margin of said orifice at an axial position of said valve assembly means which is axially remote from said valve of said valve assembly means so as to secure said valve to said flexible wall of said inner bag at said margin of said inner bag flexible wall surrounding said orifice, namely, a first clamping component disposed at least partly inside said inner bag and engaging an inner surface portion of said margin of said inner bag flexible wall surrounding said orifice and a second clamping component disposed at least partly outside said inner bag and engaging an outer surface portion of said margin of said inner bag flexible wall surrounding said orifice, said valve assembly means thereby forming a substantially fluid-tight seal around said orifice.
4. The dispenser of claim 3 wherein one of the clamping components has a tubular portion extending through the orifice.
5. The dispenser of claim 4 wherein a resilient gasket is disposed around the tubular portion.
6. The dispenser of claim 5 wherein the clamping components having the tubular portion has an annular portion integral with the tubular portion and wherein the other clamping component has an annular portion disposed around the tubular portion of said one of said clamping components.
7. The dispenser of claim 6 wherein said resilient washer is disposed between the annular portion of said one of the clamping component and the margin of the orifice.
8. The dispenser of claim 6 wherein the annular portion of the clamping component having the tubular portion is disposed inside the inner bag and wherein the annular portion of the other clamping component is disposed outside the inner bag.
9. The dispenser of claim 8 wherein said resilient washer is disposed between the annular portion disposed outside the inner bag and the margin of the orifice.
10. The dispenser of claim 3 wherein the first and second clamping components are adapted to be snap-fitted to each other.
11. The dispenser of claim 10 wherein one of the clamping components has a tubular portion extending through the orifice and an annular portion integral with the tubular portion, wherein the other clamping component has an annular portion disposed around the tubular portion of said one of said clamping components and wherein a resilient washer is disposed between the annular portion of one of the clamping components and the margin of the orifice.
12. The dispenser of claim 11 wherein the annular portion of the clamping components having the tubular portion is disposed inside the inner bag and wherein the annular portion of the other clamping components is disposed outside the inner bag.
13. A dispenser as set forth in claim 3, further comprising:
cover means having an outer peripheral portion thereof fixedly mounted upon said outer canister;
recess means defined within said cover means; and a valve body, within which said valve is reciprocably movable between said opened and closed positions, fixedly mounted within said recess means of said cover means.
cover means having an outer peripheral portion thereof fixedly mounted upon said outer canister;
recess means defined within said cover means; and a valve body, within which said valve is reciprocably movable between said opened and closed positions, fixedly mounted within said recess means of said cover means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/567,069 | 1990-08-14 | ||
| US07/567,069 US5115944A (en) | 1990-08-14 | 1990-08-14 | Fluid dispenser having a collapsible inner bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2048474A1 CA2048474A1 (en) | 1992-02-15 |
| CA2048474C true CA2048474C (en) | 1996-04-23 |
Family
ID=24265597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002048474A Expired - Lifetime CA2048474C (en) | 1990-08-14 | 1991-08-06 | Fluid dispenser |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5115944A (en) |
| EP (1) | EP0471503B1 (en) |
| JP (1) | JP3068904B2 (en) |
| KR (1) | KR100195821B1 (en) |
| BR (1) | BR9103461A (en) |
| CA (1) | CA2048474C (en) |
| DE (1) | DE69102837T2 (en) |
| MX (1) | MX9100625A (en) |
| ZA (1) | ZA916161B (en) |
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| EP3034241A1 (en) * | 2014-12-19 | 2016-06-22 | HILTI Aktiengesellschaft | Storage container for a setting device |
| US9737126B1 (en) | 2015-01-28 | 2017-08-22 | Yoram Fishman | Combination dispenser and applicator |
| US10385285B2 (en) | 2015-02-25 | 2019-08-20 | Illinois Tool Works Inc. | Fuel and propellant composition for combustion tools |
| US10166666B2 (en) | 2015-11-25 | 2019-01-01 | Illinois Tool Works Inc. | Adapter for combustion tool fuel cells |
| US10598377B2 (en) | 2016-05-27 | 2020-03-24 | Illinois Tool Works Inc. | Combustion-powered fastener driving tool fuel cell assembly |
| USD812101S1 (en) | 2016-05-27 | 2018-03-06 | Illinois Tool Works Inc. | Combination fuel cell adapter and cap |
| USD828398S1 (en) | 2016-12-08 | 2018-09-11 | Illinois Tool Works Inc. | Fuel cell metering valve |
| DE102018113356A1 (en) * | 2018-06-05 | 2019-12-05 | Gábor Fazekas | bag valve |
| USD1001736S1 (en) | 2020-09-01 | 2023-10-17 | Illinois Tool Works Inc. | Fuel cell adapter for tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3662926A (en) * | 1971-01-19 | 1972-05-16 | Clayton Corp | Valve and bag assembly for pressure dispensing |
| FR2233843A5 (en) * | 1973-06-15 | 1975-01-10 | Air Liquide | Aerosol container with inner flexible envelope - uses two propulsive fluids, one soluble, the other insoluble in product |
| US4189069A (en) * | 1978-03-17 | 1980-02-19 | Stoody William R | Squeeze tube sack for aerosol type containers |
| US4211344A (en) * | 1978-07-26 | 1980-07-08 | Stoody William R | Sack retention and pressurizing for aerosol type dispensers |
| US4222499A (en) * | 1979-05-07 | 1980-09-16 | Kain's Research & Development Company, Inc. | Pressurized fluid dispensing apparatus having expansible bladder held in place with compressive forces |
| US4286636A (en) * | 1979-07-19 | 1981-09-01 | The Coca-Cola Company | Dip tube and valve with quick-disconnect coupling for a collapsible container |
| US4423829A (en) * | 1980-08-28 | 1984-01-03 | Container Industries Inc. | Apparatus for containing and dispensing fluids under pressure and method of manufacturing same |
| US4483474A (en) * | 1981-01-22 | 1984-11-20 | Signode Corporation | Combustion gas-powered fastener driving tool |
| US4458830A (en) * | 1981-05-18 | 1984-07-10 | Werding Winfried J | Appliance for discharging a non-compressible liquid, creamy or pasty product under pressure |
| US4964540A (en) * | 1984-10-17 | 1990-10-23 | Exxel Container, Inc. | Pressurized fluid dispenser and method of making the same |
| ES2039919T3 (en) * | 1988-07-25 | 1993-10-01 | Cebal S.A. | MANUFACTURING AND CONDITIONING PROCEDURE OF A STOCK EXCHANGE, SUB-COUPLINGS AND RELEVANT DISTRIBUTORS. |
-
1990
- 1990-08-14 US US07/567,069 patent/US5115944A/en not_active Expired - Lifetime
-
1991
- 1991-08-05 ZA ZA916161A patent/ZA916161B/en unknown
- 1991-08-06 CA CA002048474A patent/CA2048474C/en not_active Expired - Lifetime
- 1991-08-07 DE DE69102837T patent/DE69102837T2/en not_active Expired - Lifetime
- 1991-08-07 JP JP3221194A patent/JP3068904B2/en not_active Expired - Lifetime
- 1991-08-07 EP EP91307259A patent/EP0471503B1/en not_active Expired - Lifetime
- 1991-08-12 MX MX9100625A patent/MX9100625A/en unknown
- 1991-08-13 KR KR1019910013927A patent/KR100195821B1/en not_active IP Right Cessation
- 1991-08-13 BR BR919103461A patent/BR9103461A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| BR9103461A (en) | 1992-05-05 |
| EP0471503A3 (en) | 1992-06-03 |
| DE69102837D1 (en) | 1994-08-18 |
| US5115944A (en) | 1992-05-26 |
| KR100195821B1 (en) | 1999-06-15 |
| EP0471503B1 (en) | 1994-07-13 |
| CA2048474A1 (en) | 1992-02-15 |
| ZA916161B (en) | 1992-07-29 |
| JP3068904B2 (en) | 2000-07-24 |
| KR920004252A (en) | 1992-03-27 |
| MX9100625A (en) | 1992-04-01 |
| DE69102837T2 (en) | 1994-11-24 |
| EP0471503A2 (en) | 1992-02-19 |
| JPH0656181A (en) | 1994-03-01 |
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| EEER | Examination request | ||
| MKEX | Expiry |