US20100059552A1 - Fluid dispensing valve with a spring plate - Google Patents
Fluid dispensing valve with a spring plate Download PDFInfo
- Publication number
- US20100059552A1 US20100059552A1 US12/556,185 US55618509A US2010059552A1 US 20100059552 A1 US20100059552 A1 US 20100059552A1 US 55618509 A US55618509 A US 55618509A US 2010059552 A1 US2010059552 A1 US 2010059552A1
- Authority
- US
- United States
- Prior art keywords
- aperture
- fluid
- sealing member
- dispensing valve
- springs
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3006—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being actuated by the pressure of the fluid to be sprayed
Definitions
- the present invention relates generally to the field of valves for dispensing fluids. More specifically, the present invention discloses a fluid dispensing valve having a spring plate to prevent drips.
- the present invention addresses the problem of dispensing fluid materials at a high rate of speed accurately and without drips.
- Current dispensing technologies for fluid materials have an inherent problem of dripping when not in use unless some means is used to stop material flow.
- Conventional methods to stop fluid dripping involve mechanical means that are operated by pneumatics or electronics to open and close a material pathway. This method when activated imparts a delay at the beginning of the dispense process due to the retraction of the pathway sealing device as it pulls material into the dispense nozzle or material pathway. Additional dispense time is required to replenish the material that moved with the sealing device.
- the present invention substantially eliminates adjustment issues as it is a self-contained, consumable device requiring no adjustment. Dispense delay and excess material at the finish are all but eliminated.
- This invention provides a valve for dispensing a fluid material having a spring plate to prevent drips.
- the spring plate has a sealing member suspended by springs that bias the sealing member to close the aperture when the fluid pressure is less than a predetermined limit, but allow the sealing member to move away from the aperture and permit fluid flow when this pressure limit is exceeded.
- FIG. 1 is an exploded perspective view of the aperture plate 20 and spring plate 30 .
- FIG. 2 is a side elevational view of the valve assembly.
- FIG. 3 is a cross-sectional view of the valve assembly.
- FIG. 4 is a detail cross-sectional view of the lower portion of the valve assembly.
- FIG. 1 an exploded perspective view is provided showing one embodiment of an aperture plate 20 and spring plate 30 employed in the present invention.
- FIGS. 2 and 3 are side elevational and cross-sectional views, respectively, of a valve assembly 10 incorporating the aperture plate 20 and spring plate 30 .
- a detail cross-sectional view of the lower portion of the valve assembly 10 is illustrated in FIG. 4 .
- a feed tube 12 receives fluid from a reservoir and transmits fluid into the chamber 15 of the valve assembly 10 .
- the fluid in the chamber 15 is pressurized by rotation of an auger screw 14 in the embodiment shown in the accompanying drawings.
- the fluid in the chamber 15 could be pressurized by pneumatically-generated or motor-generated motion of a piston, or other mechanically or pneumatically-generated means.
- the pressurized fluid can be delivered from the chamber 15 via a needle 18 .
- the spring plate 30 is mounted immediately downstream from the aperture plate 20 .
- the spring plate 30 is directly below and abutting the aperture plate 20 , as shown in FIGS. 3 and 4 .
- the spring plate 30 has a peripheral rim 32 , a sealing member 36 that is aligned to seal the aperture 22 in the aperture plate 20 , and a plurality of springs 34 suspending the sealing member 36 from the peripheral rim 32 .
- the sealing member 36 can be a flat disk having a diameter large enough to seal the aperture 22 in the aperture disk 20 .
- the springs 34 and peripheral rim 32 are also substantially flat or planar.
- the peripheral rim 32 can be a flat ring that extends about the aperture 22 .
- the springs 34 serve to suspend the sealing member 36 from the peripheral rim 32 of the spring plate 30 , but also to bias the sealing member 36 against the aperture 22 in the aperture plate 20 .
- the springs 34 extend in a radial pattern between the sealing member 36 and the peripheral rim 32 .
- the springs 34 can be a web of flat, U-shaped members allowing a range of elastic deformation in response to fluid pressure on the sealing member 36 exerted through the aperture 22 in the aperture disk 20 .
- the entire spring plate 30 can be formed as a single, flat piece of material, such as sheet metal or plastic.
- Other types and configurations of elastically-deformable materials could be used as springs.
- the springs 34 could be S-shaped, curved or a zig-zag shape. Coil springs could also be used.
- the springs 34 bias the sealing member 36 upward against the aperture 22 in the plane of the spring plate 30 .
- a predetermined limit i.e., a threshold value
- the springs 34 exert sufficient force to hold the sealing member 36 against the aperture 22 , and thereby seal the aperture 22 to prevent fluid flow through the aperture 22 .
- the pressure exerted on the sealing member 36 is sufficient to elastically deform the springs 34 downward out of the plane of the spring plate 30 and push the sealing member 36 downward and away from the aperture 22 in the aperture plate 20 . This unseals the aperture 22 and allows fluid flow through the aperture 22 .
- a dynamic membrane is created that allows a fluid to pass when sufficient pressure is applied on the inlet side of the aperture 22 .
- Pressure exceeding some threshold value will separate the plates 20 , 30 allowing the fluid to pass.
- Reducing the fluid pressure causes the plates 20 , 30 to return to their normally closed state which stops fluid flow.
- the opening and closing action follows the pressure curve generated by the pressure source for the valve assembly 10 and has a specific pressure required to open and close. This specific pressure results in an even flow of material that eliminates excess or insufficient material.
- the size of the aperture 22 should be specifically selected for physical properties of the fluid being dispensed and the operating parameters of the valve assembly, such as the range of fluid pressures.
- the aperture 22 size controls the fluid pressure exerted on the spring plate 30 . If the aperture 22 is too large the fluid column will have enough pressure to overcome the spring plate sealing force and the system may drip.
- the thickness and physical properties of the springs 34 and the dimensions of the sealing member 36 should also be specifically selected in light of the fluid properties and operating parameters. These design parameters can accommodate various levels of fluid fillers, viscosities and the pressure of the fluid column.
- aperture and spring plates 20 , 30 are positioned between the chamber 15 of the valve assembly 10 and the outlet (i.e., needle 18 . This configuration minimizes the distance from the fluid to travel from the pressure generator to the exit at the needle 18 orifice, which serves to minimize dispense time and increase the accuracy of the quantity of fluid dispensed.
- the aperture and spring plates 20 , 30 are completely separate components. It should be understood that these components could be combined into one piece to simplify assembly and replacement.
- the peripheral rim 32 of the spring plate 30 could be bonded or attached to the underside of the aperture plate 20 .
Abstract
A fluid-dispensing valve for dispensing pressurized fluid from a chamber employs a spring plate adjacent to the aperture. The spring plate includes a peripheral rim extending about the aperture, a sealing member abutting the aperture, and a plurality of springs extending from the peripheral rim to the sealing member. These springs bias the sealing member to close the aperture when the fluid pressure is less than a predetermined limit and allow the sealing member to open the aperture when the fluid pressure exceeds the limit.
Description
- The present application is based on and claims priority to the Applicants' U.S. Provisional Patent Application 61/095,873, entitled “Fluid Dispensing Valve With A Spring Plate,” filed on Sep. 10, 2008.
- 1. Field of the Invention
- The present invention relates generally to the field of valves for dispensing fluids. More specifically, the present invention discloses a fluid dispensing valve having a spring plate to prevent drips.
- 2. Background of the Invention
- The present invention addresses the problem of dispensing fluid materials at a high rate of speed accurately and without drips. Current dispensing technologies for fluid materials have an inherent problem of dripping when not in use unless some means is used to stop material flow. Conventional methods to stop fluid dripping involve mechanical means that are operated by pneumatics or electronics to open and close a material pathway. This method when activated imparts a delay at the beginning of the dispense process due to the retraction of the pathway sealing device as it pulls material into the dispense nozzle or material pathway. Additional dispense time is required to replenish the material that moved with the sealing device.
- Subsequently, when conventional methods are employed to stop material flow, an extra quantity of material equivalent to the gap the sealing device must occupy is ejected, which can result in an undesirable bubble in the dispense path. To control the range of movement (i.e., stroke) in such conventional methods, a mechanical adjustment and setup are required that should be done with care and periodically checked to ensure dispense quantity.
- Other conventional methods to control fluid material flow involve the induction of vacuum or ensuring the dispense pathway is a sealed environment. These methods are not quick to react as they require a pressurization and depressurization of the material pathway or reservoir that may change in volume over the life of the material reservoir. This pressurization step takes valuable dispense time and also can yield inconsistent results when the controlling volume increases as the level in the material reservoir decreases.
- In contrast, the present invention substantially eliminates adjustment issues as it is a self-contained, consumable device requiring no adjustment. Dispense delay and excess material at the finish are all but eliminated.
- This invention provides a valve for dispensing a fluid material having a spring plate to prevent drips. The spring plate has a sealing member suspended by springs that bias the sealing member to close the aperture when the fluid pressure is less than a predetermined limit, but allow the sealing member to move away from the aperture and permit fluid flow when this pressure limit is exceeded.
- These and other advantages, features, and objects of the present invention will be more readily understood in view of the following detailed description and the drawings.
- The present invention can be more readily understood in conjunction with the accompanying drawings, in which:
-
FIG. 1 is an exploded perspective view of theaperture plate 20 andspring plate 30. -
FIG. 2 is a side elevational view of the valve assembly. -
FIG. 3 is a cross-sectional view of the valve assembly. -
FIG. 4 is a detail cross-sectional view of the lower portion of the valve assembly. - Turning to
FIG. 1 , an exploded perspective view is provided showing one embodiment of anaperture plate 20 andspring plate 30 employed in the present invention.FIGS. 2 and 3 are side elevational and cross-sectional views, respectively, of avalve assembly 10 incorporating theaperture plate 20 andspring plate 30. A detail cross-sectional view of the lower portion of thevalve assembly 10 is illustrated inFIG. 4 . - The other major components of the
valve assembly 10 are discussed below. Afeed tube 12 receives fluid from a reservoir and transmits fluid into thechamber 15 of thevalve assembly 10. The fluid in thechamber 15 is pressurized by rotation of anauger screw 14 in the embodiment shown in the accompanying drawings. However, other types of pumps or pressure sources could be readily substituted. For example, the fluid in thechamber 15 could be pressurized by pneumatically-generated or motor-generated motion of a piston, or other mechanically or pneumatically-generated means. The pressurized fluid can be delivered from thechamber 15 via aneedle 18. - As shown in
FIG. 1 , theaperture plate 20 can be a flat, rigid disk with anaperture 22 extending through theplate 20 for dispensing fluid from thechamber 15. The size of theaperture 22 can vary depending on the viscosity of the fluid. - The
spring plate 30 is mounted immediately downstream from theaperture plate 20. Preferably, thespring plate 30 is directly below and abutting theaperture plate 20, as shown inFIGS. 3 and 4 . In this embodiment, thespring plate 30 has aperipheral rim 32, a sealingmember 36 that is aligned to seal theaperture 22 in theaperture plate 20, and a plurality ofsprings 34 suspending the sealingmember 36 from theperipheral rim 32. As depicted inFIG. 1 , the sealingmember 36 can be a flat disk having a diameter large enough to seal theaperture 22 in theaperture disk 20. In this embodiment, thesprings 34 andperipheral rim 32 are also substantially flat or planar. Theperipheral rim 32 can be a flat ring that extends about theaperture 22. - The
springs 34 serve to suspend the sealingmember 36 from theperipheral rim 32 of thespring plate 30, but also to bias the sealingmember 36 against theaperture 22 in theaperture plate 20. Preferably, thesprings 34 extend in a radial pattern between the sealingmember 36 and theperipheral rim 32. For example, thesprings 34 can be a web of flat, U-shaped members allowing a range of elastic deformation in response to fluid pressure on the sealingmember 36 exerted through theaperture 22 in theaperture disk 20. As shown, theentire spring plate 30 can be formed as a single, flat piece of material, such as sheet metal or plastic. Other types and configurations of elastically-deformable materials could be used as springs. For example, thesprings 34 could be S-shaped, curved or a zig-zag shape. Coil springs could also be used. - In operation, the
springs 34 bias the sealingmember 36 upward against theaperture 22 in the plane of thespring plate 30. As long as the fluid pressure within thechamber 15 remains below a predetermined limit (i.e., a threshold value), thesprings 34 exert sufficient force to hold the sealingmember 36 against theaperture 22, and thereby seal theaperture 22 to prevent fluid flow through theaperture 22. However, if fluid pressure increases beyond this limit, the pressure exerted on the sealingmember 36 is sufficient to elastically deform thesprings 34 downward out of the plane of thespring plate 30 and push the sealingmember 36 downward and away from theaperture 22 in theaperture plate 20. This unseals theaperture 22 and allows fluid flow through theaperture 22. - In other words, by using a combination of a stiff,
non-flexing aperture plate 20 and a flexible,spring plate 30, a dynamic membrane is created that allows a fluid to pass when sufficient pressure is applied on the inlet side of theaperture 22. Pressure exceeding some threshold value will separate theplates plates valve assembly 10 and has a specific pressure required to open and close. This specific pressure results in an even flow of material that eliminates excess or insufficient material. - The size of the
aperture 22 should be specifically selected for physical properties of the fluid being dispensed and the operating parameters of the valve assembly, such as the range of fluid pressures. Theaperture 22 size controls the fluid pressure exerted on thespring plate 30. If theaperture 22 is too large the fluid column will have enough pressure to overcome the spring plate sealing force and the system may drip. Similarly, the thickness and physical properties of thesprings 34 and the dimensions of the sealingmember 36 should also be specifically selected in light of the fluid properties and operating parameters. These design parameters can accommodate various levels of fluid fillers, viscosities and the pressure of the fluid column. - In the embodiment shown in
FIGS. 2-4 , the lower portion of thevalve assembly 10 can be removed by unthreading anut 16. This provides ready access to thechamber 15 and internal components of the valve assembly. Theaperture plate 20 andspring plate 30 are also readily removable and can be quickly replaced. As shown most clearly inFIG. 4 , theaperture plate 20 andspring plate 30 can be dropped into this lower portion of the valve assembly housing, which is then threaded with thenut 16 onto the upper portion of thevalve assembly 10. - It should be noted that the aperture and
spring plates chamber 15 of thevalve assembly 10 and the outlet (i.e.,needle 18. This configuration minimizes the distance from the fluid to travel from the pressure generator to the exit at theneedle 18 orifice, which serves to minimize dispense time and increase the accuracy of the quantity of fluid dispensed. - The previous discussion and the drawings involve an embodiment of the present invention in which the aperture and
spring plates peripheral rim 32 of thespring plate 30 could be bonded or attached to the underside of theaperture plate 20. - The above disclosure sets forth a number of embodiments of the present invention described in detail with respect to the accompanying drawings. Those skilled in this art will appreciate that various changes, modifications, other structural arrangements, and other embodiments could be practiced under the teachings of the present invention without departing from the scope of this invention as set forth in the following claims.
Claims (13)
1. A fluid-dispensing valve comprising:
a chamber containing a fluid;
an aperture for dispensing pressurized fluid from the chamber; and
a spring plate adjacent to the aperture having:
(a) a peripheral rim extending about the aperture;
(b) a sealing member abutting the aperture; and
(c) a plurality of springs extending from the peripheral rim to the sealing member, said springs biasing the sealing member to close the aperture when the fluid pressure is less than a predetermined limit and allowing the sealing member to open the aperture when the fluid pressure exceeds the limit.
2. The fluid-dispensing valve of claim 1 wherein the springs extend in a radial pattern from the sealing member to the peripheral rim.
3. The fluid-dispensing valve of claim 1 further comprising an aperture plate containing the aperture, and wherein the spring plate abuts the aperture plate.
4. The fluid-dispensing valve of claim 1 wherein the springs comprise a flat curved shape.
5. The fluid-dispensing valve of claim 1 wherein the springs comprise a web of U-shaped members extending between the sealing member and the peripheral rim allowing a range of elastic deformation in response to fluid pressure on the sealing member.
6. The fluid-dispensing valve of claim 1 wherein the sealing member is substantially planar.
7. The fluid-dispensing valve of claim 1 wherein the spring plate is substantially planar when the aperture is closed, and wherein the springs elastically deform to move the sealing member away from the aperture in the open position.
8. The fluid-dispensing valve of claim 1 wherein the peripheral rim comprises a flat ring.
9. A fluid-dispensing valve comprising:
a chamber containing a fluid;
an aperture plate having an aperture for dispensing pressurized fluid from the chamber; and
a substantially planar spring plate abutting the aperture plate, said spring plate having:
(a) a peripheral rim extending about the aperture;
(b) a sealing member abutting the aperture; and
(c) a plurality of flat curved springs suspending the sealing member from the peripheral rim, said springs biasing the sealing member against the aperture to close the aperture when the fluid pressure is less than a predetermined limit, and deforming to move the sealing member away from the aperture to thereby open the aperture when the fluid pressure exceeds the limit.
10. The fluid-dispensing valve of claim 9 wherein the springs extend in a radial pattern from the sealing member to the peripheral rim.
11. The fluid-dispensing valve of claim 9 wherein the springs comprise a web of U-shaped members extending between the sealing member and the peripheral rim allowing a range of elastic deformation in response to fluid pressure on the sealing member.
12. The fluid-dispensing valve of claim 9 wherein the sealing member is substantially planar.
13. The fluid-dispensing valve of claim 9 wherein the peripheral rim comprises a flat ring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/556,185 US20100059552A1 (en) | 2008-09-10 | 2009-09-09 | Fluid dispensing valve with a spring plate |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US9587308P | 2008-09-10 | 2008-09-10 | |
US12/556,185 US20100059552A1 (en) | 2008-09-10 | 2009-09-09 | Fluid dispensing valve with a spring plate |
Publications (1)
Publication Number | Publication Date |
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US20100059552A1 true US20100059552A1 (en) | 2010-03-11 |
Family
ID=41798336
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/556,185 Abandoned US20100059552A1 (en) | 2008-09-10 | 2009-09-09 | Fluid dispensing valve with a spring plate |
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US (1) | US20100059552A1 (en) |
Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1972344A (en) * | 1931-11-13 | 1934-09-04 | William E Jackson | Tube closure |
US2639194A (en) * | 1950-12-21 | 1953-05-19 | Spraying Systems Co | Antidrip valve for spray nozzles |
US3412910A (en) * | 1966-02-01 | 1968-11-26 | Trans Indent Ets | Closure for tubes or the like |
US3618825A (en) * | 1969-12-15 | 1971-11-09 | Robert E Clarke | Closure for dispensing spout |
US3623660A (en) * | 1969-03-27 | 1971-11-30 | Elicopter Soc Trasporti Aerei | Dripproof valve for preventing the leakage of liquid products |
US4660598A (en) * | 1986-01-13 | 1987-04-28 | Spraying Systems Co. | Diaphragm-type antidrip valve |
US4728006A (en) * | 1984-04-27 | 1988-03-01 | The Procter & Gamble Company | Flexible container including self-sealing dispensing valve to provide automatic shut-off and leak resistant inverted storage |
US4867200A (en) * | 1988-06-30 | 1989-09-19 | Markley George L | Unidirectional fluid flow check valve assembly |
US4913187A (en) * | 1987-08-17 | 1990-04-03 | Dresser Industries | Compressor valve with flat spring |
US5036880A (en) * | 1990-02-08 | 1991-08-06 | Cooper Industries | High efficiency plate valve for reciprocating compressor |
US5121840A (en) * | 1989-09-29 | 1992-06-16 | Henk Schram | Inflatable body with a valve |
US5275312A (en) * | 1991-10-10 | 1994-01-04 | Sofar Spa | One-way valve suitable for use in particular in a container supplying a liquid under pressure |
US5513832A (en) * | 1994-04-22 | 1996-05-07 | Lectron Products, Inc. | Variable force solenoid valve |
US5747102A (en) * | 1995-11-16 | 1998-05-05 | Nordson Corporation | Method and apparatus for dispensing small amounts of liquid material |
US6089272A (en) * | 1998-02-08 | 2000-07-18 | 3By Ltd. | Check valve |
US6510868B2 (en) * | 2000-01-11 | 2003-01-28 | Coltec Industrial Products, Inc. | Profiled plate valve |
US6968976B2 (en) * | 2002-06-26 | 2005-11-29 | Masatoshi Masuda | Valve mechanism for tube-type fluid container |
US20060043117A1 (en) * | 2004-08-30 | 2006-03-02 | Rieke Corporation | Airless dispensing pump with tamper evidence features |
US7287546B2 (en) * | 2003-03-14 | 2007-10-30 | Denso Corporation | Simple structure of fuel pressure regulator designed to minimize pressure loss |
US20090071550A1 (en) * | 2007-09-14 | 2009-03-19 | Daryll Duane Patterson | In-line adjustable regulators |
US7694857B1 (en) * | 2002-04-29 | 2010-04-13 | Dl Technology, Llc | Fluid dispense pump with drip prevention mechanism and method for controlling same |
-
2009
- 2009-09-09 US US12/556,185 patent/US20100059552A1/en not_active Abandoned
Patent Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1972344A (en) * | 1931-11-13 | 1934-09-04 | William E Jackson | Tube closure |
US2639194A (en) * | 1950-12-21 | 1953-05-19 | Spraying Systems Co | Antidrip valve for spray nozzles |
US3412910A (en) * | 1966-02-01 | 1968-11-26 | Trans Indent Ets | Closure for tubes or the like |
US3623660A (en) * | 1969-03-27 | 1971-11-30 | Elicopter Soc Trasporti Aerei | Dripproof valve for preventing the leakage of liquid products |
US3618825A (en) * | 1969-12-15 | 1971-11-09 | Robert E Clarke | Closure for dispensing spout |
US4728006A (en) * | 1984-04-27 | 1988-03-01 | The Procter & Gamble Company | Flexible container including self-sealing dispensing valve to provide automatic shut-off and leak resistant inverted storage |
US4660598A (en) * | 1986-01-13 | 1987-04-28 | Spraying Systems Co. | Diaphragm-type antidrip valve |
US4913187A (en) * | 1987-08-17 | 1990-04-03 | Dresser Industries | Compressor valve with flat spring |
US4867200A (en) * | 1988-06-30 | 1989-09-19 | Markley George L | Unidirectional fluid flow check valve assembly |
US5121840A (en) * | 1989-09-29 | 1992-06-16 | Henk Schram | Inflatable body with a valve |
US5036880A (en) * | 1990-02-08 | 1991-08-06 | Cooper Industries | High efficiency plate valve for reciprocating compressor |
US5275312A (en) * | 1991-10-10 | 1994-01-04 | Sofar Spa | One-way valve suitable for use in particular in a container supplying a liquid under pressure |
US5513832A (en) * | 1994-04-22 | 1996-05-07 | Lectron Products, Inc. | Variable force solenoid valve |
US5747102A (en) * | 1995-11-16 | 1998-05-05 | Nordson Corporation | Method and apparatus for dispensing small amounts of liquid material |
US6089272A (en) * | 1998-02-08 | 2000-07-18 | 3By Ltd. | Check valve |
US6510868B2 (en) * | 2000-01-11 | 2003-01-28 | Coltec Industrial Products, Inc. | Profiled plate valve |
US7694857B1 (en) * | 2002-04-29 | 2010-04-13 | Dl Technology, Llc | Fluid dispense pump with drip prevention mechanism and method for controlling same |
US6968976B2 (en) * | 2002-06-26 | 2005-11-29 | Masatoshi Masuda | Valve mechanism for tube-type fluid container |
US7287546B2 (en) * | 2003-03-14 | 2007-10-30 | Denso Corporation | Simple structure of fuel pressure regulator designed to minimize pressure loss |
US20060043117A1 (en) * | 2004-08-30 | 2006-03-02 | Rieke Corporation | Airless dispensing pump with tamper evidence features |
US20090071550A1 (en) * | 2007-09-14 | 2009-03-19 | Daryll Duane Patterson | In-line adjustable regulators |
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AS | Assignment |
Owner name: GPD GLOBAL, INC.,COLORADO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MILLER, ALVIN R.;WEDEKIN, SVEN A.;JOHNSON, ANDREW L.;AND OTHERS;REEL/FRAME:023207/0810 Effective date: 20090908 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |