EP1437508A1 - Valved piston compressor - Google Patents
Valved piston compressor Download PDFInfo
- Publication number
- EP1437508A1 EP1437508A1 EP20030000218 EP03000218A EP1437508A1 EP 1437508 A1 EP1437508 A1 EP 1437508A1 EP 20030000218 EP20030000218 EP 20030000218 EP 03000218 A EP03000218 A EP 03000218A EP 1437508 A1 EP1437508 A1 EP 1437508A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- annular groove
- housing
- sealing ring
- chamber
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
- F04B39/0016—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons with valve arranged in the piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/12—Valves; Arrangement of valves arranged in or on pistons
- F04B53/121—Valves; Arrangement of valves arranged in or on pistons the valve being an annular ring surrounding the piston, e.g. an O-ring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/12—Valves; Arrangement of valves arranged in or on pistons
- F04B53/123—Flexible valves
Abstract
Description
- The present invention relates to a compressor, and more particularly to a compressor having an improved valved piston device.
- Typical compressors comprise a piston slidably received in a piston housing and a sealing ring solidly engaged on the piston and engaged between the piston and the piston housing. The pistons of the typical compressors have no valves provided therein, such that the typical piston or the sealing ring may be easily damaged. In addition, a number of valve members are required for controlling the air into and out of the piston housing.
- The applicant had developed various kinds of valved pistons, and issued as U.S. Patent NO. 5,655,887, to Chou, and U.S. Patent NO. 6,095,758, to Chou, and U.S. Patent NO. 6,135,725, to Chou, and comprise a complicated valved piston device for the compressors that may not be easily manufactured and assembled together and that may not be effectively operated.
- The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional compressors.
- The primary objective of the present invention is to provide a compressor including a piston device having a sealing ring loosely engaged therein for preventing the sealing ring from solidly engaging with the piston housing and for preventing the piston from being easily damaged.
- The other objective of the present invention is to provide a compressor including a piston device having a number of openings and an annular groove formed therein for loosely receiving the sealing ring and for allowing the openings to be communicated with the environment when the sealing ring is loosely received in the annular groove of the piston device.
- The further objective of the present invention is to provide a compressor including a piston device having a spring blade for blocking a conduit and for allowing the air to flow into the cylinder housing only and for preventing the air from flowing out of the cylinder housing.
- The still further objective of the present invention is to provide a compressor including a piston device having a spring blade for blocking a number of conduits, and having a sealing ring received in an inclined outer annular groove of the piston, for forming a double security structure.
- In accordance with one aspect of the invention, there is provided a valved piston device for a compressor, the valved piston device comprising a housing including a chamber formed therein, a piston slidably received in the chamber of the housing, the piston including an outer peripheral portion having an annular groove formed therein and defined by an inclined inner peripheral surface, and including an upper portion having a plurality of openings formed therein and communicating with the annular groove of the piston, and a sealing ring received in the annular groove of the piston. The inclined inner peripheral surface of the piston includes a lower portion having a diameter greater than that of the sealing ring for forming a lower portion of the annular groove of the piston and for forcing the sealing ring to engage with the housing, and includes an upper portion having a diameter less than that of the sealing ring for forming an upper portion of the annular groove of the piston and for loosely receiving the sealing ring in the upper portion of the annular groove of the piston, the openings of the piston are communicating with the annular groove of the piston and communicating with the chamber of the housing when the sealing ring is loosely received in the upper portion of the annular groove of the piston.
- The housing includes a tube extended outward therefrom and includes a passage formed therein and communicating with the chamber of the housing and communicating with the tube, for allowing the air in the chamber of the housing to be forced to flow through the passage of piston and to flow through the tube when the piston is moved toward the tube.
- The piston includes a plate disposed on top thereof, and means for securing the plate to the piston for defining the upper portion of the piston.
- The piston further includes at least one conduit formed therein and communicating with the chamber of the housing with an environment, and a spring blade for selectively blocking the conduit of the piston and for allowing the air to flow through the conduit of the piston and to flow into the chamber of the housing when the piston is moved in a direction away from the housing.
- The spring blade includes a first end or a middle or a center portion secured to the piston and includes at least one arm extended therefrom for blocking the conduit of the piston.
- The conduits may be arranged in a circle in the piston. The spring blade includes a circular shape having a center portion secured to the piston and having a peripheral portion for blocking the conduits of the piston.
- The openings of the piston may be opened toward a radially outer peripheral portion of the piston.
- Further objectives and advantages of the present invention will become apparent from a careful reading of a detailed description provided hereinbelow, with appropriate reference to accompanying drawings.
-
- FIG. 1 is a partial exploded view of a valved piston device for a compressor in accordance with the present invention;
- FIG. 2 is a cross sectional view taken along lines 2-2 of FIG. 3;
- FIG. 3 is a top plane schematic view of the valved piston;
- FIG. 4 is a partial cross sectional view showing a cylinder housing and a valved piston slidably engaged in the cylinder housing;
- FIG. 5 is a partial cross sectional view similar to FIG. 4, illustrating the sliding engagement of the valved piston in the cylinder housing;
- FIG. 6 is a partial exploded view illustrating another embodiment of the valved piston;
- FIG. 7 is a partial exploded view illustrating a further embodiment of the valved piston;
- FIGS. 8 and 9 are top plane schematic views illustrating two still further embodiments of the valved piston;
- FIG. 10 is a partial exploded view illustrating a still further embodiment of the valved piston;
- FIG. 11 is a cross sectional view taken along lines 11-11 of FIG. 12;
- FIG. 12 is a top plane schematic view of the valved piston as shown in FIGS. 10 and 11; and
- FIGS. 13, 14, 15, 16, 17, 18, 19 are top plane schematic views illustrating seven still further embodiments of the valved piston.
-
- Referring to the drawings, and initially to FIGS. 1-4, a valved piston device for a cylinder or an actuator or an air compressor in accordance with the present invention comprises a
cylinder housing 3 including a chamber 30 (FIG. 4) formed therein for slidably receiving a piston 1 therein. Thehousing 3 includes apassage 31 formed therein for communicating thechamber 30 of thehousing 3 with atube 32 which may direct or guide or introduce the pressurized air or compressed air out of thecylinder housing 3. The piston 1 includes arod 11 extended therefrom and extended outward of thehousing 3 and having anorifice 12 formed therein for coupling to and for being driven by a motor (not shown), and for allowing the piston 1 to be moved along thehousing 3 in a reciprocating action by the motor (not shown). The driving of the piston 1 along thehousing 3 has been disclosed in U.S. Patent NO. 5,655,887, to Chou, and U.S. Patent NO. 6,095,758, to Chou, and U.S. Patent NO. 6,135,725, to Chou, which are taken as a reference for the present invention. - The piston 1 includes an
annular groove 13 formed in the outer peripheral portion for receiving asealing ring 2 therein, and formed or defined by an innerperipheral surface 16 that is inclined or tilted relative to the longitudinal direction or axis of thepiston rod 11 and the piston 1. Thesealing ring 2 is provided for making an air tight seal between the piston 1 and thehousing 3. The inclined innerperipheral surface 16 of the piston 1 includes a lower peripheral portion having a diameter greater than that of thesealing ring 2, for forcing the sealingring 2 radially outward to engage with thehousing 3 and to make an air tight or a water tight seal with the housing 3 (FIG. 5). The inclined innerperipheral surface 16 of the piston 1 includes an upperperipheral portion 18 having a diameter less than that of the sealing ring 2 (FIG. 4), for loosely receiving thesealing ring 2, and for allowing thesealing ring 2 to be disengaged from thehousing 3. - The piston 1 includes an
upper portion 10 having three ormore openings 14 formed therein and communicating theannular groove 13 of the piston 1 with thechamber 30 of thehousing 3. Particularly, the three ormore openings 14 are arranged in a circle that has a diameter less than that of the upperperipheral portion 18 of the inclined innerperipheral surface 16 of the piston 1, but has a diameter greater than that of thesealing ring 2, best shown in FIGS. 2, 4, 5, for allowing the air in thechamber 30 of thehousing 3 to flow out through theopenings 14 and theannular groove 13 of the piston 1 and to flow bypass thesealing ring 2 and then to flow out of thehousing 3 when thesealing ring 2 is loosely received in the upper portion of theannular groove 13, best shown in FIG. 4. Relatively, the air may also flow through theannular groove 13 and theopenings 14 of the piston 1 and then may flow bypass thesealing ring 2 and then may flow into thechamber 30 of thehousing 3 when thesealing ring 2 is loosely received in the upper portion of theannular groove 13. - In operation, the piston 1 may be moved up and down along the
housing 3 in a reciprocating action by the typical motor (not shown). When the piston 1 is moved in an active direction, i.e., moved toward thetube 32, thesealing ring 2 is forced toward thelower portion 17 of the inclined innerperipheral surface 16 of the piston 1 and thus may be forced to engage with thehousing 3 such that the air in thechamber 30 of thehousing 3 may be forced into thetube 32 through the passage 31 (FIG. 5). When the piston 1 moves downward or away from thetube 32, the air may flow into thechamber 30 of thehousing 3 via theannular groove 13 of the piston 1 and thenotches 14 of the piston 1. The air may then be forced into thetube 32 again when the piston 1 is forced toward thetube 32 again. The air may thus be effectively forced through thetube 32 without the other valve members. - It is to be noted that the formation or the provision of the
openings 14 that are arranged in a circle in the piston 1 may facilitate the evenly flowing of the air bypass thesealing ring 2, even when thesealing ring 2 is unevenly received in theannular groove 13 of the piston 1 and when the sealingring 2 blocks some of theopenings 14 of the piston 1. - Referring next to FIG. 6, the piston 1 may include a
screw hole 101 formed therein, and aplate 19 having theopenings 14 formed therein and having anaperture 102 formed in the middle portion thereof for receiving afastener 104 which may be threaded with thescrew hole 101 of the piston 1 and which may secure theplate 19 onto the top of the piston 1, for forming theupper portion 10 of the piston 1. Awasher 103 may be engaged between theplate 19 and thefastener 104. - Referring next to FIGS. 7-9, illustrated is another embodiment of the valved piston device which includes the
openings 14 that are opened toward the radially outer peripheral portion of theupper portion 10 of the piston 1. Theopenings 14 may be arranged parallel to each other (FIG. 8) or arranged radially and opened radially outward (FIGS. 7, 9). The air may also flow through theannular groove 13 and theopenings 14 of the piston 1 and then may flow bypass thesealing ring 2 and then may flow into thechamber 30 of thehousing 3 when thesealing ring 2 is loosely received in the upper portion of theannular groove 13. - Referring next to FIGS. 10-19, illustrated are the other embodiments of the valved piston device. The piston 1 includes one conduit 20 (FIGS. 10, 11, 12, 16), or two conduits 20 (FIGS. 13, 17), or more conduits (FIGS. 14, 15, 18, 19) formed therein and formed through the piston 1 for communicating the
chamber 30 of thehousing 3 with the environment, and for allowing the air to flow into and outward of thechamber 30 of thehousing 3. The piston 1 includes one ormore projections 21 provided or extended from theupper portion 10 thereof. A valve blade or aspring blade 22 includes one end portion secured to the piston 1 with the projections 21 (FIGS. 10, 11, 12, 16), and the other end for biasing against theupper portion 10 of the piston 1 and for blocking theconduits 20 of the piston 1 respectively and for preventing the air to flow out of thecylinder housing 3 when the piston 1 is moved away from the tube 32 (FIGS. 4, 5) and for allowing the air to flow into thecylinder housing 3 when the piston 1 is moved toward the tube 32 (FIGS. 4, 5). - As shown in FIGS. 13-15 and 17-19, the
spring blade 22 may include various kinds of shapes having a middle or a center portion secured to the piston 1 with theprojections 21, and having the other portion, such as the peripheral portion for biasing against theupper portion 10 of the piston 1 and for blocking theconduits 20 of the piston 1 respectively. For example, thespring blade 22 may include a circular shape (FIGS. 15, 19), or may include two (FIGS. 13, 17) or more arms (FIGS. 14, 18) or extensions extended therefrom for blocking theconduits 20 of the piston 1. In addition to theconduits 20 of the piston 1, the piston 1 may further include a number ofopenings 14 formed in the outer peripheral portion thereof (FIGS. 16-19) for communicating with theannular groove 13 of the piston 1 and for further communicating with the environment. - Accordingly, the compressor includes a piston having a loosely received sealing ring for preventing the piston from being easily damaged.
- Although this invention has been described with a certain degree of particularity, it is to be understood that the present disclosure has been made by way of example only and that numerous changes in the detailed construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed.
Claims (8)
- A valved piston device for a compressor, said valved piston device comprising:a) a housing including a chamber formed therein,b) a piston slidably received in said chamber of said housing, said piston including an outer peripheral portion having an annular groove formed therein, and including an upper portion having a plurality of openings formed therein and communicating with said annular groove of said piston, andc) a sealing ring received in said annular groove of said piston,
- The valved piston device according to claim 1, wherein said annular groove of said piston includes an inclined inner peripheral surface, said inclined inner peripheral surface of said piston including a lower portion having a diameter greater than that of said sealing ring for forming a lower portion of said annular groove of said piston and for forcing said sealing ring to engage with said housing, and including an upper portion having a diameter less than that of said sealing ring for forming an upper portion of said annular groove of said piston and for loosely receiving said sealing ring in said upper portion of said annular groove of said piston, said openings of said piston being communicating with said annular groove of said piston and being communicating with said chamber of said housing when said sealing ring is loosely received in said upper portion of said annular groove of said piston.
- The valved piston device according to claim 1, wherein said openings of said piston are opened toward a radially outer peripheral portion of said piston.
- A valved piston device for a compressor, said valved piston device comprising:a) a housing including a chamber formed therein,b) a piston slidably received in said chamber of said housing, said piston including an outer peripheral portion having an annular groove formed therein, said piston further including at least one conduit formed therein and communicating with said chamber of said housing with an environment,c) a sealing ring received in said annular groove of said piston,d) a spring blade secured to said piston, said spring blade including at least one arm extended therefrom for blocking said at least one conduit of said piston and for allowing the air to flow through said at least one conduit of said piston and to flow into said chamber of said housing when said piston is moved in a direction away from said housing.
- The valved piston device according to claim 4, wherein said spring blade includes a circular shape having a center portion secured to said piston and having a peripheral portion for blocking said at least one conduit of said piston.
- The valved piston device according to claim 4, wherein piston includes an upper portion having a plurality of openings formed therein and communicating with said annular groove of said piston, and includes an inclined inner peripheral surface for defining said annular groove thereof, said inclined inner peripheral surface of said piston includes a lower portion having a diameter greater than that of said sealing ring for forming a lower portion of said annular groove of said piston and for forcing said sealing ring to engage with said housing, and includes an upper portion having a diameter less than that of said sealing ring for forming an upper portion of said annular groove of said piston and for loosely receiving said sealing ring in said upper portion of said annular groove of said piston, said openings of said piston are communicating with said annular groove of said piston and communicating with said chamber of said housing when said sealing ring is loosely received in said upper portion of said annular groove of said piston.
- The valved piston device according to claim 6, wherein said openings of said piston are opened toward a radially outer peripheral portion of said piston.
- A valved piston device for a compressor, said valved piston device comprising:a) a housing including a chamber formed therein,b) a piston slidably received in said chamber of said housing, said piston including an outer peripheral portion having an annular groove formed therein, said piston further including a plate disposed on top thereof, and means for securing said plate to said piston for defining said upper portion of said piston,c) a sealing ring received in said annular groove of said piston, said plate further including a plurality of openings formed therein and communicating with said annular groove of said piston, said openings of said plate being communicating with said annular groove of said piston and being communicating with said chamber of said housing and for allowing the air to flow through said openings of said plate and to flow into said chamber of said housing when said piston is moved in a direction away from said housing.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03000218A EP1437508B1 (en) | 2003-01-07 | 2003-01-07 | Valved piston compressor |
AT03000218T ATE343723T1 (en) | 2003-01-07 | 2003-01-07 | INTEGRATED RING VALVE FOR A COMPRESSOR PISTON |
DE60309280T DE60309280T2 (en) | 2003-01-07 | 2003-01-07 | Integrated ring valve for a compressor piston |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03000218A EP1437508B1 (en) | 2003-01-07 | 2003-01-07 | Valved piston compressor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1437508A1 true EP1437508A1 (en) | 2004-07-14 |
EP1437508B1 EP1437508B1 (en) | 2006-10-25 |
Family
ID=32479884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03000218A Expired - Lifetime EP1437508B1 (en) | 2003-01-07 | 2003-01-07 | Valved piston compressor |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1437508B1 (en) |
AT (1) | ATE343723T1 (en) |
DE (1) | DE60309280T2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007053749A1 (en) * | 2007-11-12 | 2009-05-14 | Jhou, Wen-San, An-Din | Air compressor has valve assembly element, cylinder with chamber and exhaust connection, where space is formed, and devices are provided to limit movement of another side of valve assembly element relative to piston |
EP3039293A4 (en) * | 2013-08-30 | 2016-08-10 | Dongguan Richtek Electronics Co Ltd | A fluid cylinder |
WO2020181477A1 (en) * | 2019-03-12 | 2020-09-17 | 冠翔(香港)工业有限公司 | Air valve and air compressor |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101776061A (en) * | 2010-03-05 | 2010-07-14 | 浙江鸿友压缩机制造有限公司 | Piston valve air suction non-lubricated air compressor |
DE102020208698A1 (en) * | 2020-07-13 | 2022-01-13 | Thyssenkrupp Ag | Piston for a piston pump, and piston pump |
TWI778591B (en) * | 2021-04-21 | 2022-09-21 | 周文三 | Piston of cylinder of air compressor |
TWI784492B (en) * | 2021-04-21 | 2022-11-21 | 周文三 | Piston of cylinder of air compressor |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8985C (en) * | 1900-01-01 | Dr. E. L. GUILLIE in Villeneuve, Yonne (Frankreich | Double-acting rotating piston pump | |
GB572095A (en) * | 1944-03-25 | 1945-09-21 | Turner Mfg Company Ltd | Improvements in double-acting differential piston pumps |
DE975469C (en) * | 1952-06-04 | 1961-12-07 | Mueller & Co Schwelmer Eisen | Pump piston with built-in fluid valve |
US4596515A (en) * | 1983-09-08 | 1986-06-24 | Sargent Industries, Inc. | Oil well pump |
EP0312597A1 (en) * | 1987-04-21 | 1989-04-26 | Proizvodstvennoe Obiedinenie 'zavod Imeni M.I.Kalinina' | Piston of volume displacement machine |
US5171135A (en) * | 1991-07-25 | 1992-12-15 | Tecumseh Products Company | Flexible suction valve retainer |
US5655887A (en) | 1996-09-11 | 1997-08-12 | Chou; Wen-San | Valved Piston arrangement for an electric motor driven air compressor |
US6095758A (en) | 1998-03-30 | 2000-08-01 | Chou; Wen-San | Structure for a compact air compressor |
US6135725A (en) | 1996-09-11 | 2000-10-24 | Chou; Wen-San | Valved piston arrangement for an electric motor driven air compressor |
US6200110B1 (en) * | 1999-03-01 | 2001-03-13 | Wen San Chou | Air compressor |
US20020106293A1 (en) * | 2001-02-05 | 2002-08-08 | Carlson Robert T. | high volume low pressure air pump |
-
2003
- 2003-01-07 AT AT03000218T patent/ATE343723T1/en not_active IP Right Cessation
- 2003-01-07 EP EP03000218A patent/EP1437508B1/en not_active Expired - Lifetime
- 2003-01-07 DE DE60309280T patent/DE60309280T2/en not_active Expired - Lifetime
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8985C (en) * | 1900-01-01 | Dr. E. L. GUILLIE in Villeneuve, Yonne (Frankreich | Double-acting rotating piston pump | |
GB572095A (en) * | 1944-03-25 | 1945-09-21 | Turner Mfg Company Ltd | Improvements in double-acting differential piston pumps |
DE975469C (en) * | 1952-06-04 | 1961-12-07 | Mueller & Co Schwelmer Eisen | Pump piston with built-in fluid valve |
US4596515A (en) * | 1983-09-08 | 1986-06-24 | Sargent Industries, Inc. | Oil well pump |
EP0312597A1 (en) * | 1987-04-21 | 1989-04-26 | Proizvodstvennoe Obiedinenie 'zavod Imeni M.I.Kalinina' | Piston of volume displacement machine |
US5171135A (en) * | 1991-07-25 | 1992-12-15 | Tecumseh Products Company | Flexible suction valve retainer |
US5655887A (en) | 1996-09-11 | 1997-08-12 | Chou; Wen-San | Valved Piston arrangement for an electric motor driven air compressor |
US6135725A (en) | 1996-09-11 | 2000-10-24 | Chou; Wen-San | Valved piston arrangement for an electric motor driven air compressor |
US6095758A (en) | 1998-03-30 | 2000-08-01 | Chou; Wen-San | Structure for a compact air compressor |
US6200110B1 (en) * | 1999-03-01 | 2001-03-13 | Wen San Chou | Air compressor |
US20020106293A1 (en) * | 2001-02-05 | 2002-08-08 | Carlson Robert T. | high volume low pressure air pump |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007053749A1 (en) * | 2007-11-12 | 2009-05-14 | Jhou, Wen-San, An-Din | Air compressor has valve assembly element, cylinder with chamber and exhaust connection, where space is formed, and devices are provided to limit movement of another side of valve assembly element relative to piston |
DE102007053749B4 (en) * | 2007-11-12 | 2012-04-05 | Wen-San Jhou | Air compressor with improved valve component |
EP3039293A4 (en) * | 2013-08-30 | 2016-08-10 | Dongguan Richtek Electronics Co Ltd | A fluid cylinder |
WO2020181477A1 (en) * | 2019-03-12 | 2020-09-17 | 冠翔(香港)工业有限公司 | Air valve and air compressor |
Also Published As
Publication number | Publication date |
---|---|
DE60309280D1 (en) | 2006-12-07 |
ATE343723T1 (en) | 2006-11-15 |
EP1437508B1 (en) | 2006-10-25 |
DE60309280T2 (en) | 2007-02-01 |
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