Having Pumping Chamber Pressure Responsive Distributor Patents (Class 417/559)
  • Patent number: 11668290
    Abstract: A floor pump includes a base, a first cylinder, a second cylinder, an air tube, a handle and an air release device. The first cylinder and the air tube unidirectionally communicate with the base. The second cylinder is movably connected within the first cylinder and has a first piston. The air tube is disposed in the second cylinder and has a second piston. The handle is connected to the second cylinder. The air release device is disposed in the handle and includes a switcher and an air release valve assembly configured to be pressed by the switcher to move relative to a through hole of the handle to cause the second cylinder selectively communicates with the outside of the floor pump.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: June 6, 2023
    Inventor: Scott Wu
  • Patent number: 11624359
    Abstract: A pumping element comprises a first flow chamber; a second flow chamber in fluid connection with the first flow chamber, the second flow chamber including a shoulder; a check valve including a first insert and a second insert, the first insert being movable between a first position wherein the first insert forms a seal that inhibits fluid flow between the first and second flow chambers and a second position wherein the first insert permits fluid flow between the first and second flow chambers, the second insert being inserted into the second flow chamber to an extent limited by the shoulder; and a spring having a first end engaging the first insert and a second end engaging the second insert; wherein the first insert moves from the first position to the second position against a biasing force of the spring in response to pressurized fluid in the first flow chamber.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: April 11, 2023
    Assignee: Cummins Inc.
    Inventors: Anthony A. Shaull, Tamas Rauznitz, Brian M. Watson, Patrick D. Chasteen, Luke Allen Jones
  • Patent number: 11300113
    Abstract: A system for retaining a valve assembly in a cavity formed in a cylinder body of a compressor includes a ring having a through-hole positioned adjacent to the cavity and a cover partially inserted inside a through-hole of the ring. The cover and the ring can slide relative to each other. The position of the cover relative to the cylinder body can be adjusted by tightening a cover retainer. The cover applies a downward force on the valve assembly via a cage. The downward force is used to compress a seal located between the valve assembly and the cylinder body. A seal is positioned between the ring and the cover. The seal remains squeezed when the cover and the ring slide relative to each other. The system can be used to convert a jackbolt cage-cover assembly and may not require significant machining of the cavity to provide a surface-finish with a suitable roughness for a sealing surface.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: April 12, 2022
    Inventor: Zahroof Mohamed
  • Patent number: 10941763
    Abstract: A reciprocating gas compressor valve having a plurality of clusters of kidney shaped holes positioned along a common circular or annular locus in the main body and a sealing element with a top portion, a bottom portion and a tubular section. The tubular section is integrally connected to the top portion and bottom portion. In an open position, a flow pathway is provided through the clusters of kidney shaped holes and the tubular section and the bottom profile abuts a stop surface of the valve. In a closed position, the top profile abuts the seat for sealing gas flow within the valve.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: March 9, 2021
    Assignee: Delaware Capital Formation, Inc.
    Inventors: Swapnil S. Khaire, Stephen A. Mish, Fred Matthew Schweinberg, Vasudev M. Balamohan, Sujith N. Rasquinha
  • Patent number: 10815947
    Abstract: The present invention relates to a high pressure fuel pump comprising an inlet channel in connection with a first chamber, through which inlet channel fuel is led to the first chamber, a second chamber arranged in connection with the first chamber, an outlet valve arranged in connection with the second chamber and an inlet valve comprising a piston, with a first end section and a second end section. The piston is moveably arranged with the first end section in a third chamber, and the second end section is moveably arranged between the first chamber and the second chamber. A press element is arranged to act on the piston with a mechanic force, so that the piston strives to be positioned with the second end section closing the connection between the first chamber and the second chamber. The inlet valve is in a closed state and may be controlled via an electromagnetic unit.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: October 27, 2020
    Assignee: Scania CV AB
    Inventor: Kim Kylström
  • Patent number: 10697447
    Abstract: A system is provided for pumping fluid, with the system including a fluid pump and a cassette. The pump includes a motor and a piston that is movable toward and away from a flexible diaphragm of the cassette. A linkage connects the motor and the piston to move the piston toward and away from the diaphragm. At least a portion of the piston or the diaphragm is magnetized, with the other having at least a portion that is magnetized or formed of a ferromagnetic material, thereby magnetically coupling the piston and the diaphragm such that movement of the piston moves the diaphragm into and out of a cassette cavity aligned with the diaphragm and piston. Movement of the diaphragm into and out of the cavity changes the effective volume of the cavity, which has the effect of drawing fluid into or forcing fluid out of the cavity.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: June 30, 2020
    Assignee: Fenwal, Inc.
    Inventors: Christopher J. Wegener, Mark Brierton
  • Patent number: 10604360
    Abstract: A method and a dense phase powder pump for conveying coating powder from a first powder reservoir to a second downstream powder reservoir or to a downstream powder spray-coating gun or the like installation for spraying coating powder are disclosed. In order to reduce the number of components of the dense phase powder pump that require maintenance, the dense phase powder pump is designed as a single-chamber dense phase powder pump and has only a single powder conveyor chamber for conveying coating powder.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: March 31, 2020
    Assignee: GEMA SWITZERLAND GMBH
    Inventors: Felix Mauchle, Hanspeter Vieli, Hans-Peter Lüthi
  • Patent number: 10598146
    Abstract: An axial hydraulic pump-motor, in which a cylinder block having a plurality of cylinder bores on a valve plate having a high-pressure side port and a low-pressure side port for controlling an amount of reciprocation of a piston in each of the cylinder bores, the hydraulic pump-motor includes: a residual pressure release port provided on the valve plate and communicating until the cylinder bore on a top dead center side communicates with the low-pressure side port; a residual pressure acquisition portion obtaining a value of a residual pressure in the cylinder bore on the top dead center side; and a directional switching valve switching a flow path between the residual pressure release port and an hydraulic oil tank and a flow path between the residual pressure release port and the low-pressure side port.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: March 24, 2020
    Assignee: KOMATSU LTD.
    Inventors: Takeo Iida, Mitsuru Arai, Seiichi Hasegawa
  • Patent number: 10578064
    Abstract: A relief valve device includes: a valve housing that includes a communication passage, which communicates between a first pressure chamber and a second pressure chamber, and a relief chamber, which is configured to communicate with the second pressure chamber; a partition wall that is formed in an inside of the valve housing and partitions between the communication passage and the relief chamber; a first valve member that is configured to block and enable flow of fluid between the first pressure chamber and the communication passage; a first urging member that urges the first valve member; a second valve member that is configured to block and enable flow of the fluid between the second pressure chamber and the relief chamber; and a second urging member that urges the second valve member.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: March 3, 2020
    Assignee: DENSO CORPORATION
    Inventors: Shinichiro Koshimoto, Yoshihito Suzuki
  • Patent number: 10337508
    Abstract: A pump including a housing defining a plurality of inlet bores. A first interior wall is arranged to at least partially define a first of the plurality of inlet bores. The first interior wall has a contour in a cross section taken normal to the plunger axes. The first interior wall is at least partially defined by the revolution of the contour about a first inlet axis that is normal to and intersects a first of the plurality of plunger axes. The contour includes a cylindrical portion arranged parallel to the first inlet axis, a planar portion extending in a direction perpendicular to the first inlet axis and spaced a first distance from the plunger axis, and a convex bulge portion extending from the cylindrical portion and spaced a second distance from the plunger axis. The contour further includes a V-shaped groove portion extending from the convex bulge portion.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: July 2, 2019
    Assignee: GARDNER DENVER PETROLEUM PUMPS, LLC
    Inventors: Paul Douglas Cary, Vadim Kachkovskiy
  • Patent number: 10012232
    Abstract: A compressor includes: a compression space with an annular shape comprising an inner circumferential surface and an outer circumferential surface; and a discharge opening formed in a direction parallel to a shaft direction of the compressor, to discharge a refrigerant compressed in the compression space, wherein a first portion of a cross-sectional area of the discharge opening overlaps a portion of a cross-sectional area of the compression space, a second portion of the cross-sectional area of the discharge opening does not overlap the cross-sectional area of the discharge opening, and the ratio of the non-overlapping second portion of the cross-sectional area of the discharge opening to the entire cross-sectional area of the discharge opening is 0.1 or less. With such a configuration, a dead volume generated in the compression space can be reduced, and thus compressor efficiency can be enhanced.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: July 3, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Pilhwan Kim, Changjun Noh, Hanseob Lim
  • Patent number: 9334858
    Abstract: A disc pump valve includes an elliptical pump base having at least one aperture extending through the base. The base comprises a first end wall and a sealing surface. The pump includes an isolator overlying the base and having an isolator valve aperture extending through the isolator at or near the periphery of the isolator and partially overlying a cavity formed by the base to form an outlet. In addition, the disc pump includes a valve flap disposed between the pump base and the isolator. The flap has apertures arranged about its periphery, beyond the periphery of the cavity but underlying an isolator valve aperture. The flap seals against the sealing surface to close the pump outlet and prevent fluid from flowing from the outlet into the cavity and flexes away from the sealing surface to allow fluid to pass from the cavity through the pump outlet.
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: May 10, 2016
    Assignee: KCI Licensing, Inc.
    Inventors: Christopher Brian Locke, Aidan Marcus Tout
  • Patent number: 9316903
    Abstract: The present invention provides a flexible nanoimprint mold which can fabricate sub-15 nm ultra fine structures on either planar or curved substrates. The mold comprises a top ultra-thin rigid layer of imprint patterning features and a bottom thick flexible layer of polymer elastomer. The two distinct layers are preferably integrated via chemically bonding. The top layer of the mold enables a sub-15 nm resolution of pattern fabrication and the bottom layer affords a conformal contact to planar or curved surface of substrates. The methods for fabricating the same are disclosed.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: April 19, 2016
    Assignee: Nanjing University
    Inventors: Yanfeng Chen, Haixiong Ge, Zhiwei Li, Changsheng Yuan, Minghui Lu
  • Publication number: 20150044081
    Abstract: An automatic valve including a valve seat having first gas flow passages extending there through and a valve guard having second gas flow passages extending there through. The valve further comprises at least one shutter member movably arranged between the valve guard and the valve seat, at least one set of spring members biasing the at least one shutter member towards a closed position in sealing engagement with the valve seat to close the first gas flow passages, and at least one spring holder ring provided with a plurality of spring retention seats. Each spring member of the set of spring members is partially housed in a respective spring pocket formed in the valve guard and retained in a respective one of the spring retention seat.
    Type: Application
    Filed: March 6, 2013
    Publication date: February 12, 2015
    Inventors: Alberto Babbini, Riccardo Bagagli, Guido Pratelli
  • Publication number: 20150030484
    Abstract: An improved membrane valve and method for manufacturing such membrane valve. The improved membrane valve can be used for transferring fluids or gases in hermetic or semi-hermetic compressors, including a method and system for manufacturing a membrane valve and a membrane valve with applications for use in several motors, particularly in hermetic or semi-hermetic compressors which use, as a refrigeration fluid, an appropriate type of gas thus promoting the refrigeration physical affect. A body and a membrane of the membrane valve are produced from substantially thin metallic plates separately in accordance to an available process and can be subjected to rounding in order to eliminate live corners, and then juxtaposed thus composing the valve, with the above mentioned membrane on one side, fitted to the body which is fixed through a connection process and, on the other side, left free to oscillate.
    Type: Application
    Filed: July 24, 2014
    Publication date: January 29, 2015
    Inventor: Jose Ubaldino Rosa
  • Publication number: 20150025461
    Abstract: A system for the precise metering and delivery of discrete volumes is described. The system is composed of inexpensive components that can be easily assembled, allowing for cost-effective manufacturing of the system. The system can precisely meter and deliver fluids, solids in particulate or powder form, or alternatively it could mix discrete amounts of fluid and solid. Potential applications for the system and microfluidic device include subcutaneous, long-term, automated drug delivery, such as insulin for diabetics.
    Type: Application
    Filed: July 17, 2014
    Publication date: January 22, 2015
    Inventors: Thomas N. Corso, Colleen K. Van Pelt, Anthony J. Rose, Peter Weisz
  • Publication number: 20150020776
    Abstract: A fuel delivery system including a high pressure fuel pump assembly. The assembly includes first and second output fuel paths each in communication with a fuel pump chamber. A main pressure relief fuel path is in communication with the fuel pump chamber and includes a pressure relief valve. A first relief fuel path is in communication with both the first output fuel path and the main pressure relief fuel path. A second relief fuel path is in communication with both the second output fuel path and the main pressure relief fuel path. The first and the second relief fuel paths are configured to restrict fuel flow therethrough between the first and the second output fuel paths.
    Type: Application
    Filed: July 18, 2013
    Publication date: January 22, 2015
    Inventors: Dhyana Ramamurthy, Steve Roseborsky
  • Publication number: 20150017026
    Abstract: A pump includes a cap that is fit into an opening of a pump body. The pump body has an external thread formed on an outer circumference close to a top face thereof for engagement with and coupling to a rotatable fixing ring having an internal thread so as to retain a cap from top side thereof. The threading engagement along the circumference fixes the cap and the pump body together. The cap has an underside from which a projecting ring extends downward. The projecting ring has a thread. A piston cylinder has an end forming a thread engageable with the thread of the projecting ring to complete the assembling of the piston cylinder.
    Type: Application
    Filed: July 9, 2013
    Publication date: January 15, 2015
    Inventor: Po Lin LIAO
  • Publication number: 20150004036
    Abstract: A relief valve assembly is provided for use in connection with high pressure and ultrahigh pressure pumps. The relief valve assembly includes a valve pin having an engagement portion with a tapered surface and a valve seat having a valve pin receiving aperture defining a tapered surface on the valve seat to sealingly mate with the engagement portion of the valve pin when the valve pin is seated against the valve seat in a seated configuration. The valve seat further includes at least one bypass passage that extends from the valve pin receiving aperture to an exterior surface of the valve seat such that when the valve pin is displaced away from the seated configuration fluid can pass through the bypass passage and an annular space created between the engagement portion of the valve pin and the valve seat. Systems incorporating the relief valve assembly are also provided.
    Type: Application
    Filed: January 11, 2013
    Publication date: January 1, 2015
    Inventor: Jordan J. Hopkins
  • Publication number: 20140377082
    Abstract: Semi-commanded valve system applied to an alternative-type compressor, wherein said compressor comprises at least a cylinder (1), at least a piston (2), at least a compression chamber (3), and at least one valve (71;81) acting in their respective orifice (7;8). Said at least one valve (71;81) is prestressed in a first operation state and is able to act as a check valve. Furthermore, said at least one valve (71;81) comprises at least a ferrous portion and can be selectively actuated by a magnetic field generating element (72;82). Method of modulating the capacity of a compressor provided with such a semi-commanded valve system.
    Type: Application
    Filed: November 28, 2012
    Publication date: December 25, 2014
    Inventors: Dietmar Erich Bernhard Lilie, Eduardo Arceno, Rodrigo Kremer
  • Patent number: 8915722
    Abstract: Tapered valve guide and spring retainer assemblies are described for use in plunger pump housings that incorporate corresponding outwardly flared discharge and suction bores, as well as structural features for stress-relief. Plunger pumps so constructed are relatively resistant to fatigue failure because of stress reductions, and they may incorporate essentially any style of valves, including top and lower stem-guided valves and crow-foot-guided valves, in easily-maintained configurations. Besides forming a part of valve guide and spring retainer assemblies, side spacers may be shaped and dimensioned to improve volumetric efficiency of the pumps in which they are used. The present disclosure provides, for the first time, the use of tungsten carbide valve seats, which significantly increase durability and service life of a pump, especially when abrasive fluids are being pumped, as in various oilfield operations.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: December 23, 2014
    Inventor: George H. Blume
  • Publication number: 20140369874
    Abstract: A check valve comprises a housing, a fluid passage, a seat, a valve member and a stop. The fluid passage extends through the housing. The seat is disposed in the fluid passage. The valve member is positioned in the passage to engage the seat. The stop extends through the housing to engage the valve member. The stop is accessible from outside the housing to adjust a distance the valve member can travel from the seat. In one embodiment, the stop includes a variable stop feature, such as an offset pin or a cam. In another embodiment, the stop includes a pump control valve. In yet another embodiment, the housing includes markings to indicate a position of the stop. The valve member comprises a ball or a poppet in different embodiments.
    Type: Application
    Filed: December 14, 2012
    Publication date: December 18, 2014
    Inventors: Bradley H. Hines, Jeromy D. Horning, Mariusz J. Luczak, William M. Blenkush, Mark D. Shultz
  • Publication number: 20140363324
    Abstract: A piston pump for a vehicle brake system includes a piston which is mounted in a cylinder so as to be movable along an axis. An inlet valve for introduction of fluid into the cylinder, and a sealing element configured to seal off the piston with respect to the cylinder are located on the piston. A first portion of the piston includes a valve seat of the inlet valve, and a second portion of the piston includes a piston rod. The sealing element includes a projection which engages axially over the first piston portion and extends to the second piston portion.
    Type: Application
    Filed: October 22, 2012
    Publication date: December 11, 2014
    Inventor: Rainer Braun
  • Patent number: 8905732
    Abstract: In usual hydraulic pumps, a separate assembly opening is provided for every valve of the hydraulic pump. This design causes sealing problems. It is proposed, that the fluid inlet valve and the fluid outlet valve can be assembled through a common assembly access port. Further, the fluid inlet valve and the fluid outlet valve can be arranged around a common cavity, or even within the same cavity, via the common assembly access port in the fluid working machine's body.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: December 9, 2014
    Assignee: Danfoss Power Solutions APS
    Inventors: Onno Kuttler, Uwe Stein
  • Publication number: 20140345713
    Abstract: The present invention refers to a suction valve assembly for alternative compressors. Said suction valve assembly comprises at least two suction valves (3) independent from one another and disposed at one same blade (1), wherein each of said suction valves (3) comprises a functional edge (4) intended for a sole suction orifice (21) of the valve plate. Said suction valves (3) are separated from one another by at least one through slit (13).
    Type: Application
    Filed: November 8, 2012
    Publication date: November 27, 2014
    Inventors: Moacir Pirovano, Tadeu Tonheiro Rodrigues, Eduardo Luis Gaertner, Roberto Ramsdorf
  • Publication number: 20140348677
    Abstract: A device for pumping a fluid comprises a suction valve module. In addition, the device comprises a discharge valve module. Further, the device comprises a fluid flow passage extending between the suction valve module and the discharge valve module. The suction valve module includes a valve housing block having a fluid inlet and a suction valve assembly disposed within the valve housing block. The suction valve assembly includes a moveable poppet element configured to reciprocate along a suction valve axis that is skewed relative to a central axis of the fluid inlet.
    Type: Application
    Filed: September 14, 2012
    Publication date: November 27, 2014
    Inventors: Manuel Moeller, Jason Neal Whaley
  • Publication number: 20140334957
    Abstract: A pneumatic reciprocating fluid pump for pumping a fluid at least one check valve assembly that includes a check valve body insert, a ball within the valve body insert, and an annular sealing ring member disposed within a seat ring receptacle. The sealing ring member has dimensions smaller than corresponding dimensions of the seat ring receptacle, such that the sealing ring member is capable of moving within the seat ring receptacle. The ball is configured to slide back and forth between a first position and a second position within the check valve body insert responsive to forward and reverse flow of fluid therethrough. In one position, the ball is seated against the sealing ring member and prevents reverse flow of the fluid through the check valve assembly, and forward flow of the fluid through the check valve assembly is enabled when the ball is in another position.
    Type: Application
    Filed: April 25, 2014
    Publication date: November 13, 2014
    Inventors: John M. Simmons, Tom M. Simmons, David M. Simmons
  • Publication number: 20140318363
    Abstract: A reciprocating-piston uniflow engine includes a harmonic oscillator inlet valve capable of oscillating at a resonant frequency for controlling the flow of working fluid into the engine. In particular, the inlet valve includes an inlet valve head and a spring arranged together as a harmonic oscillator so that the inlet valve head is moveable from an unbiased equilibrium position to a biased closed position occluding an inlet. When released, the inlet valve head undergoes a single oscillation past the equilibrium position to a maximum open position and returns to a biased return position close to the closed position to choke the flow and produce a pressure drop across the inlet valve causing the inlet valve to close. In other embodiments, the harmonic oscillator arrangement of the inlet valve enables the uniflow engine to be reversibly operated as a uniflow compressor.
    Type: Application
    Filed: April 2, 2014
    Publication date: October 30, 2014
    Inventor: Charles L. Bennett
  • Patent number: 8870554
    Abstract: A pump is disclosed, comprising: a pump block defining a cylinder in which a piston is mounted for reciprocation and positive displacement of fluids from an intake port of the pump block to a discharge port of the pump block; an intake valve located in the intake port of the pump block and a discharge valve located in the discharge port of the pump block; the intake valve having a valve plug that has a closed position in which the valve plug is seated on a valve seat in the intake port; a wear sleeve lining at least a portion of the intake port upstream of the valve seat; a pressure sensor upstream of the intake valve for detecting a pressure condition indicative of failure of the intake valve to provide a seal when the intake valve is in the closed position; and a controller responsive to the pressure sensor to send a signal to stop operation of the pump upon detection of the pressure condition.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: October 28, 2014
    Assignee: Allen R. Nelson Engineering (1997) Inc.
    Inventor: Gerald Edward Kent
  • Publication number: 20140314604
    Abstract: In order to prevent the leakage of a gas from an internal space communicating with a compression chamber inside a cylinder in a cylinder head of a compressor, the compressor includes a suction valve pressing portion that presses a suction valve so that the suction valve provided in the internal space of the cylinder head does not slip off through a suction-side head opening, the suction valve pressing portion includes a suction valve pressing and inserting portion that is inserted into the cylinder head through the suction-side head opening, the outer peripheral surface of the suction valve pressing and inserting portion is provided with an annular suction valve pressing groove portion, a suction-side O-ring is attached into the suction valve pressing groove portion, and a suction-side backup ring that suppresses the movement of the suction-side O-ring toward the suction-side head opening is disposed at a position near the suction-side head opening of the suction-side O-ring inside the suction valve pressing
    Type: Application
    Filed: April 3, 2014
    Publication date: October 23, 2014
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Kenji Nagura, Toshio Hirai, Hitoshi Takagi
  • Publication number: 20140308144
    Abstract: A manually operated pump for supplying air to a bicycle comprises an outer tube with one end closed and the other end open; a core tube which can slide in the outer tube and is provided with a piston assembly on one end; and a hose which can slide in the core tube. One end of the hose is connected with an air needle, and the other end is connected with an air nozzle assembly. The piston assembly comprises a piston, a piston ring, and a one-way valve communicating with the core tube and the outer tube. An end socket is provided on the other end of the core tube. A narrowing port is formed in the end socket of the core tube. A foot stand is hinged on outer side of the end socket of the core tube. The air needle has a head matching the narrowing port.
    Type: Application
    Filed: April 9, 2012
    Publication date: October 16, 2014
    Applicant: DAHON TECHNOLOGIES, LTD.
    Inventors: David Tak-Wei Hon, Ken Chen, Dongming Huang
  • Publication number: 20140301876
    Abstract: A piston pump, in particular for a hydraulic assembly of an electronically controllable vehicle brake system, includes a cylinder element that has a pressure chamber with an outlet formed on the inside. The piston pump further includes an outlet-restricting element held on the outside of the cylinder element on a component by a first holder.
    Type: Application
    Filed: October 25, 2011
    Publication date: October 9, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Oliver Gaertner, Heiko Jahn, Marc Zimmermann, Daniel Gosse
  • Publication number: 20140294637
    Abstract: A compressor includes a housing, a cylinder block, a valve plate, a discharge valve forming plate and a retainer gasket. The discharge valve forming plate includes a discharge valve, a connecting portion and a discharge valve engaging portion. The discharge valve opens and closes the discharge port. A plurality of discharge valve support portions extends from the connecting portion to support the discharge valve. The discharge valve engaging portion extends from the connecting portion. The retainer gasket includes a retainer, a gasket and a retainer gasket engaging portion. The retainer restricts an opening and closing operation of the discharge valve. The gasket ensures airtightness between the housing and the cylinder block. The retainer gasket engaging portion is formed by bending a part of the retainer gasket. The discharge valve forming plate and the retainer gasket are positioned by connecting the discharge valve engaging portion and the retainer gasket engaging portion.
    Type: Application
    Filed: March 21, 2014
    Publication date: October 2, 2014
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Jun KONDO, Nobutoshi BANNO, Toshiyuki KOBAYASHI, Naoki GOTO
  • Patent number: 8845305
    Abstract: A diaphragm pump (10) having a pump body (11) providing opposing pump chambers (12, 13). Mounted in the body is a piston assembly (14) having pistons (15) joined by a piston rod (16). Each piston (15) is sealingly connected to the body (11) by a diaphragm (22) so that each of the chambers (12, 13) is divided into a first and a second sub-chamber, with the flow of fluid being pumped is governed by a pair of valves (30). Each valve (30) includes a base (31) to which there is movably attached a movable valve member (35).
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: September 30, 2014
    Assignee: Joe Santa & Associates Pty Limited
    Inventor: David Luiz Santa
  • Publication number: 20140271250
    Abstract: A system, including a compressor including a cylinder with a chamber, a first axial end portion, and a second axial end portion, and a piston in the chamber of the cylinder, the piston is configured to reciprocate along a cylinder axis between the first and second axial end portions, and a co-axial flow device coupled to compressor, the co-axial flow device includes a first wall disposed about a first passage along an axis, a second passage disposed about the first wall along the axis, and a second wall disposed about the second passage along the axis, the first passage includes a first axial opening in fluid communication with the chamber while the piston moves in a first axial direction, and the second passage includes a second axial opening in fluid communication with the chamber while the piston moves in a second axial direction opposite from the first axial direction.
    Type: Application
    Filed: February 26, 2014
    Publication date: September 18, 2014
    Applicant: Cameron International Corporation
    Inventors: David W. Legg, Carl Noble
  • Patent number: 8827242
    Abstract: An illustrative valve cartridge for a pump system is disclosed. In one example the valve cartridge includes a cartridge body, a mounting flange operatively coupled to the cartridge body, wherein the mounting flange is adapted to be coupled to a housing of a pump, a valve member that is adapted to sealingly engage a valve seat within the pump housing and an actuator positioned within the cartridge body, wherein the actuator is operatively coupled to the valve member via a connector and wherein the actuator is adapted for selectively moving the valve member relative to the valve seat when the valve cartridge is operatively coupled to the pump housing.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: September 9, 2014
    Assignee: National Oilwell Varco, L.P.
    Inventor: Adrian Marica
  • Publication number: 20140227112
    Abstract: A vacuum pump for generating an underpressure has a pump chamber (14, 15) with an inlet (143) and an outlet (150), wherein the outlet (150) is equipped with a valve (3). According to the invention, the pump chamber (14, 15) is provided with a pressure sensor (23, 23?, 24). This vacuum pump has a relatively precise and inexpensive vacuum sensor. It is also advantageous that the sensor, being integrated in the pump chamber, is not susceptible to failure and takes up a small amount of space.
    Type: Application
    Filed: September 27, 2012
    Publication date: August 14, 2014
    Applicant: Medela Holding AG
    Inventor: Armin Felber
  • Patent number: 8800167
    Abstract: A pneumatic inflation device disposed within the sole of a shoe and comprising a pump with integral air release valve and which is entirely within the sole, a pump actuator which is entirely within the sole when not in use, and an inflatable bladder which is entirely within the sole and is operatively connected to the pump. Such a device can include a mechanism to lock the pump actuator within the sole such that the mechanism's cap is flush with the outer wall of the sole and finger-operable to allow the shoe-wearer to easily operate the inflation device and release air therefrom.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: August 12, 2014
    Inventor: Harold S. Doyle
  • Publication number: 20140208732
    Abstract: A direct-fired plunger hydraulic pump, comprising a combustor (1), a high-temperature heat exchanger (2), a steam chamber (3), at least one cylinder plunger mechanism (10), a steam refrigerator (15) and a control system, wherein the high-temperature heat exchanger (2) is connected with the combustor (1) through a pipe; the steam chamber (3) is a sealed container, in which a water nozzle (4) is arranged above the high-temperature heat exchanger (2); the cylinder plunger mechanism (10) is mounted above the steam chamber (3) and mainly consists of a cylinder (20) and a plunger (21); a piston of the cylinder (20) is connected with a piston of the plunger (21) through a mandril (30) with a reset mechanism; an inlet valve (22) communicated with the steam chamber (3) is provided at the bottom end of the cylinder (20), and an exhaust valve (23) is provided on a side wall of the cylinder (20); an oil outlet and an oil inlet are provided at the top end of the plunger (21); the exhaust valve (23) is connected with the s
    Type: Application
    Filed: December 2, 2011
    Publication date: July 31, 2014
    Inventor: Zhongsheng Tang
  • Publication number: 20140205474
    Abstract: A hydrogen storage container that stores hydrogen gas using a hydrogen storage material capable of storing hydrogen gas includes: a hollow liner that stores the hydrogen gas and includes a liner opening portion into which the hydrogen gas is introduced; a hollow sub-tank disposed inside the liner to house the hydrogen storage material; a heat exchange pipe which is disposed inside the sub-tank and through which a heat exchange medium passes; a sub-tank support portion that supports an end portion of the sub-tank relative to the liner opening portion and supports an end portion of the heat exchange pipe; and a heat exchange medium passage that is formed to penetrate the sub-tank support portion and leads the heat exchange medium to the heat exchange pipe.
    Type: Application
    Filed: June 27, 2012
    Publication date: July 24, 2014
    Inventors: Yoshinari Nakamura, Takashi Kobayashi
  • Patent number: 8784081
    Abstract: Plunger pump fluid ends incorporate housings with structural features that facilitate manufacture while providing improved internal access, reduced weight, and reduced likelihood of fatigue failures compared to conventional fluid end housings. Certain fluid ends incorporate frangible pressure relief means in suction valves for protection from overpressure-induced catastrophic failure. Oblong bore transition areas, when present, and barrel-profile central cavities provide obtuse bore intersection angles and effectively reduce fluid end weight while reducing peak cyclic fluid end housing stress by redistributing stress within the fluid end housing.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: July 22, 2014
    Inventor: George H. Blume
  • Publication number: 20140199195
    Abstract: The cylinder assembly includes a first body, a second body and a coupling mechanism. The first body is of a tubular shape and has a valve set at a bottom end thereof. The valve set includes a valve, an elastomer and a passage. The second body has a ring with an outline fitting the valve. The coupling mechanism includes a first coupling piece disposed on the first body and a second coupling piece disposed on the second body and is used for detachably coupling the first and second bodies. The valve is located in an aperture of the ring, the elastomer flexibly supports the valve to abut against the ring and seal up the aperture or retracts to open the aperture for allowing liquid to flow into the first body through the passage.
    Type: Application
    Filed: January 15, 2013
    Publication date: July 17, 2014
    Inventor: Ya-Tsan Wang
  • Publication number: 20140193281
    Abstract: A high-pressure fuel pump for an internal combustion engine is described. The high-pressure fuel pump includes an improved configuration that beneficially simplifies certain features of the high-pressure fuel pump. More specifically, the disclosure provides for an inlet check valve positioned along an inlet fuel circuit and an outlet fuel circuit of the high-pressure pump that provides a path for a low-pressure inlet fuel flow to and a path for a high-pressure output fuel flow from a pumping chamber of the fuel pump. Because of the configuration of the inlet check valve and the outlet check valve, the complexity of high-pressure fuel pump is beneficially reduced, decreasing the cost of components and assembly and improving the life and reliability of high-pressure fuel pump.
    Type: Application
    Filed: January 8, 2013
    Publication date: July 10, 2014
    Applicant: CUMMINS INC.
    Inventors: Anthony A. SHAULL, Wesley R. THAYER
  • Patent number: 8763636
    Abstract: A valve assembly for use in a fuel pump comprises a body member with a valve aperture, a valve member movable within the body member and adapted to close the valve aperture, and a biasing arrangement having a first part fixed with respect to one of the body member and the valve member and a second part fixed with respect to the other of the body member and the valve member. The biasing arrangement is adapted to bias the valve member to close the valve aperture. The biasing arrangement comprises a helical spring with a first diameter at the first part and a second diameter at the second part. The first diameter of the helical spring is different from the second diameter of the spring. The helical spring is at its first part retained by an interference fit against the member with respect to which it is fixed.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: July 1, 2014
    Assignee: Delphi International Operations Luxembourg S.a.r.l.
    Inventors: Paul Buckley, Antonin Cheron, Kevin J. Laity
  • Publication number: 20140170006
    Abstract: A compressor assembly is provided and may include a compression cylinder and a compression piston disposed within the compression cylinder that compresses a vapor disposed within the compression cylinder from a suction pressure to a discharge pressure. The compressor assembly may additionally include a crankshaft that cycles the compression piston within the compression cylinder and an injection port in fluid communication with the compression cylinder that selectively communicates intermediate-pressure vapor at a pressure between the suction pressure vapor and the discharge pressure vapor to the compression cylinder. The injection port may communicate the intermediate-pressure vapor to the compression cylinder when the compression piston exposes the injection port and may be prevented from communicating the intermediate-pressure vapor to the compression cylinder when the compression piston blocks the injection port.
    Type: Application
    Filed: December 18, 2013
    Publication date: June 19, 2014
    Applicant: EMERSON CLIMATE TECHNOLOGIES, INC.
    Inventors: Ernest R. BERGMAN, John P. ELSON, Frank S. WALLIS, Brian G. SCHROEDER, Michael R. SCHULTZ NAVARA, Adam Michael BLAKE
  • Patent number: 8747083
    Abstract: An air compressor includes a cylinder housing, an outlet receptacle disposed on the cylinder housing, and a partition formed between the cylinder housing and the outlet receptacle and having an air passage formed in the partition, a piston slidably received in the cylinder housing and coupled to a motor for moving relative to the cylinder housing in a reciprocating action in order to generate a pressurized air, and a spring-biased check valve engaged with the partition for selectively blocking the air passage of the partition, the outlet receptacle includes an inner diameter “D2” no less than an inner diameter “D1” of the cylinder housing for allowing the pressurized air to easily flow into the outlet receptacle and for allowing the piston to be moved in a greater moving speed.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: June 10, 2014
    Inventor: Wen San Chou
  • Publication number: 20140134026
    Abstract: The arrangement can be applied to a compressor which comprises a compression cylinder closed by a valve plate provided with seat regions and with respective suction orifice and discharge orifice which are closed by a sealing end portion of a respective valve vane, to be peripherally seated against its seat region. The valve plate carries a support means, defined in the central region of the contour of at least one of the suction orifice and discharge orifice and incorporated to the valve plate by at least one radial arm. The support means has a stop surface, against which is seated a central region of the sealing end portion of the respective vane, said stop surface defining a projection in relation to the radial arm.
    Type: Application
    Filed: April 27, 2012
    Publication date: May 15, 2014
    Applicant: WHIRLPOOL S.A.
    Inventor: Fabian Fagotti
  • Publication number: 20140134027
    Abstract: An inlet valve arrangement for a pump head of a fuel pump for use in a common rail fuel injection system comprises an inlet valve member moveable between open and closed positions to control the flow from a source of low-pressure fuel to a pumping chamber of the fuel pump. The inlet valve member is arranged to open in response to the pressure difference between the fluid pressure of fuel on an inlet side of the inlet valve member and the fluid pressure in the pumping chamber exceeding a threshold value. The inlet valve arrangement comprises means for selectively applying a closing force on the inlet valve member to bias it toward the closed position, such that, in use, the application of the closing force by said means acts to increase the threshold value of the pressure difference at which the inlet valve member opens.
    Type: Application
    Filed: June 13, 2012
    Publication date: May 15, 2014
    Inventors: Robert Schanz, Paul Buckley, Rainer Jorach
  • Publication number: 20140127066
    Abstract: A pump assembly and methods of use and conversion including a sealed housing, at least one in-tank, not sealed pump contained in the sealed housing, an outlet check valve inside each pump, and an over pressure relief passage formed around the pumps in the sealed housing. The pump assembly may also include a common fuel inlet, a common fuel outlet; at least two of the pumps, a compact design, a mounting bracket, a sealed electrical inlet, a pre filter, a post filter, a pressure regulator, a returnless fuel supply, a pressure regulator, a return line.
    Type: Application
    Filed: January 14, 2014
    Publication date: May 8, 2014
    Applicant: HOLLEY PERFORMANCE PRODUCTS
    Inventors: Shane Ray Weckerly, Larry Joe Tipton
  • Publication number: 20140086774
    Abstract: A fluid end of a plunger pump has a plunger bore, a discharge bore, a suction bore, a valve cover bore, and a cross-bore intersection formed in portions of the fluid end. The plunger bore, discharge bore, valve cover bore, and suction bore each having an opening which opens into the cross-bore intersection. A valve cover bore axis extends through the opening of the plunger bore which opens into the cross-bore intersection. A groove is formed in the fluid end. The groove traverses a curvilinear path around an open space. Long axes of the discharge bore and suction bore extend into said open space The groove has a first section and a second section. The first section has a first end with a first opening and a second end. The second section has a first end and a second end with an opening. A gap is between said first ends of said first and second sections of said groove. A gap is between said second ends of said first and second sections of said groove. A spring retainer is in the groove.
    Type: Application
    Filed: October 5, 2012
    Publication date: March 27, 2014
    Applicant: GARDNER DENVER, INC.
    Inventors: Arun Nahendra Raj CHANDRASEKARAN, Christopher Douglas DEGGINGER, Gregory David HASH