End Of Valve Moves Inside Dashpot Chamber Patents (Class 137/514.5)
  • Patent number: 9879792
    Abstract: A relief valve for use in coupling to a vessel is disclosed. The valve includes a valve body having an inlet passage connected to a valve inlet, an outlet passage connected to a valve outlet, and an internal chamber. A valve seat is engageable with the inlet passage to close the valve inlet. A poppet is coupled to the valve seat, and a spring in the internal chamber is coupled to the poppet, the spring having a predetermined spring force. A vent passage in the valve body has a first end connected to the internal chamber and a second end connected to the outlet passage to permit release of pressure from the internal chamber through the valve outlet. The vent passage is formed at an oblique angle to both the inlet passage and the outlet passage.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: January 30, 2018
    Assignee: Engineered Controls International, LLC
    Inventor: Aaron Dominic Wyatt
  • Patent number: 9493976
    Abstract: A damper apparatus includes a piston having a flange-shaped piston main body and piston rods which project from both ends of the piston main body, a cylinder having a cylinder main body which accommodates the piston main body slidably and cylindrical portions which support slidably the piston rods, respectively, a fastener which is attached to the one cylindrical portion so as to secure the cylinder to an opening/closing member, and a coil spring which biases the one piston rod to project from the other cylindrical portion such that a distal end portion of the piston rod abuts a circumferential edge of an opening portion of a vehicle.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: November 15, 2016
    Assignees: PIOLAX INC., HONDA MOTOR CO., LTD
    Inventors: Ryu Hattori, Kenji Morita, Nobuya Shinozaki, Akira Sakata, Tomoya Yabu, Hisashi Yamamoto, Hirokuni Kumekawa, Toshifumi Gocho
  • Patent number: 9404597
    Abstract: A gas metering valve (1) having at least one valve seat (2) and at least one closure member (3) which can be pressed against the valve seat, the closure member in a maximum open position is raised at least in regions from the valve seat (2) and in a maximum closed position is pressed against the valve seat. The gas metering valve (1) has an adjusting device (5) which is spring-loaded by a spring loading device (4) of the gas metering valve (1) for adjusting the closure member (3) in a closing direction (6) from the maximum open position into the maximum closed position. The spring loading device (4) of the adjusting device (5), preferably when viewed in the closing direction (6), has at least two spring bodies (7a, 7b) which are connected mechanically in series, the spring bodies (7a, 7b) have elastic characteristics which are different from each other.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: August 2, 2016
    Assignee: VAT HOLDING AG
    Inventor: Bruno Lenherr
  • Patent number: 9119976
    Abstract: The invention relates to an oxygen breathing device that includes an oxygen source, in particular a chemical oxygen generator or an oxygen pressure tank, at least one oxygen mask connected via an oxygen supply line to said oxygen source, and a flow control unit adapted to receive a signal indicating ambient pressure or to detect ambient pressure and to control the flow of oxygen through the oxygen supply line depending on said ambient pressure. In some embodiments, the flow control unit is adapted to provide a low oxygen flow at a first ambient pressure and provide a higher oxygen flow at a second ambient pressure which is lower than said first ambient pressure.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: September 1, 2015
    Assignee: Zodiac Aerotechnics
    Inventors: Wolfgang Rittner, Rudiger Meckes
  • Patent number: 8919373
    Abstract: A valve (101) that can be used as a pressure limiter, for example in a sanitary supply line. The valve (101) according to the invention includes a valve housing (1), a fluid line piece (2) being provided in the housing interior thereof, the downstream side circumferential edge area thereof forming a valve seat (3) for a valve body (4), wherein the valve body (4) can be displaced between an open position and a closed position, in which closed position the valve body (4) acts on the downstream circumferential edge area of the fluid line piece (2), by the pressure of the fluid flowing in through the fluid line piece (2) on one side, and a downstream side pressure acting on the valve body (4) opposite to the regular flow-through direction on the other side.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: December 30, 2014
    Assignee: Neoperl GmbH
    Inventor: Martin Fangmeier
  • Patent number: 8906127
    Abstract: A motor vehicle non-return valve (10) for protecting a filter from hot exhaust gases, comprises a valve body (65), a valve plate (76), an elastic element (70), and a guide pin (72). The valve plate (76) comprises a sleeve (68) that surrounds the guide pin (72) and the valve plate (76) is slideably guided along the guide pin (72) and prevents a fluid flow through the valve body (65) in a blocking direction (91) and otherwise releases the fluid flow through the valve body (65). The elastic element (70) loads the valve plate (76) with a force that is acting to effect closing, wherein the sleeve (68) in a first sleeve section (71) is movably guided on a guide surface (75) of the guide pin (72) and wherein a second sleeve section (69) surrounds the guide pin (72) and the elastic element (70) in radial direction.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: December 9, 2014
    Assignee: Mann+Hummel GmbH
    Inventor: Reinhard Oelpke
  • Patent number: 8905066
    Abstract: The invention relates to a pressure limiting valve, in particular for placement in a return line of a common-rail-system of a combustion engine, with an elongate valve housing having an axial inlet opening present on one front end, and at least one outlet opening axially separated from the inlet opening. An interior valve seat for a ball-shaped valve body connects to the inlet opening, whereby a valve piston is positioned between the valve body and a closing spring producing a closing force. An integrated hydraulic throttle dampens the movement of the valve piston in the valve closing direction. A valve-seat insert part has a ring-shaped body with an inlet opening formed on a front end, with the conically expanding valve seat connecting to the inlet opening, as well as with a throttle section with a cylindrical interior area connecting to the valve seat.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: December 9, 2014
    Assignee: VOSS Automotive GmbH
    Inventor: Ulrich Erb
  • Patent number: 8596994
    Abstract: A compressor includes a compressing mechanism, a discharge chamber, a housing accommodating the compressing mechanism and the discharge chamber, a discharge port communicating with the discharge chamber through a discharge passage and also with an external refrigerant circuit, a muffler formed by an expanded space disposed on the discharge passage, and a check valve disposed on the discharge passage. The pressure loss caused by the discharge passage is less than that in the known compressor. The check valve is disposed in the muffler to open and close an inlet of the muffler, and the muffler is formed by the housing and a cover independent of and connected to the housing.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: December 3, 2013
    Assignee: Sanden Corporation
    Inventor: Yukihiko Taguchi
  • Patent number: 8573248
    Abstract: A gas flow valve having pneumatic vibration dampening device to reduce the vibrations created by the flow of gas through the gas valve. The gas valve includes a gas flow conduit that terminates at a discharge opening. A valve member is movably positioned relative to the discharge opening and allows gas flow in a flow condition and prevents the flow of gas in a seated position. The valve member includes a gas passage formed within the valve member. At least one flexible membrane is mounted to the valve member and surrounds an outlet opening of the gas passage. The flexible membrane is inflated as the flow of gas within the gas flow conduit increases such that the flexible membrane contacts an inner surface of a stabilizing conduit. The interaction between the flexible membrane and the stabilizing conduit reduces the vibrations created by the flow of gas past the valve member.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: November 5, 2013
    Assignee: General Electric Company
    Inventor: James N. Mashak
  • Patent number: 8453670
    Abstract: A poppet valve is disclosed that includes a valve body, a poppet guide disposed inside the valve body so as to form a flow passage from an inlet to an outlet of the valve, a poppet shutter disposed inside the poppet guide, and a biasing member to bias the poppet shutter away from the poppet guide toward an inside surface of the flow inlet so as to block the flow passage. The poppet valve further includes at least one discharge hole placing an inner chamber of the poppet guide in flow communication with a region of low static pressure of the flow passage. A method for reducing a closing pressure force acting on a poppet shutter of a poppet valve is also disclosed.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: June 4, 2013
    Assignee: Nuovo Pignone, S.p.A.
    Inventors: Stefano Francini, Nicola Campo, Michele Bianchini
  • Patent number: 8365764
    Abstract: Minimum pressure valve having a housing (13) with an inlet (14) and an outlet (15) and in which has been provided a valve body (21) which is pushed against a seating (30) round the inlet (14) in a closed position, and whereby the valve body (21) is situated at a distance from the above-mentioned seating (30) in an open position, such that the inlet (14) is connected to the outlet (15), whereby the valve body (21) is provided in a sliding manner in a valve casing (17) confining, together with the valve body (21) an inner space (36) that is connected to the inlet (14) via a duct (35).
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: February 5, 2013
    Assignee: Atlas Copco Airpower, Naamloze Vennootschap
    Inventor: Kristof Adrien Laura Martens
  • Publication number: 20120285556
    Abstract: The invention relates to a pressure limiting valve, in particular for placement in a return line of a common-rail-system of a combustion engine, with an elongate valve housing having an axial inlet opening present on one front end, and at least one outlet opening axially separated from the inlet opening. An interior valve seat for a ball-shaped valve body connects to the inlet opening, whereby a valve piston is positioned between the valve body and a closing spring producing a closing force. An integrated hydraulic throttle dampens the movement of the valve piston in the valve closing direction. A valve-seat insert part has a ring-shaped body with an inlet opening formed on a front end, with the conically expanding valve seat connecting to the inlet opening, as well as with a throttle section with a cylindrical interior area connecting to the valve seat.
    Type: Application
    Filed: May 11, 2012
    Publication date: November 15, 2012
    Inventor: Ulrich Erb
  • Patent number: 8281804
    Abstract: Pressure relief valves are described herein. An example pressure relief valve includes a body having external threads to threadably engage another body having a pressurized chamber. Additionally, the pressure relief valve includes a relief valve orifice that is threadably engaged with the body via internal threads of the body. The relief valve orifice includes a seating surface. Further, the pressure relief valve includes a pressure-balanced piston assembly that is slidably movable within the body relative to the relief valve orifice and the seating surface to control the flow of fluid between the pressurized chamber and the relief valve orifice.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: October 9, 2012
    Assignee: Fisher Controls International LLC
    Inventors: Chun Lin, Roy Ronald Pelfrey
  • Patent number: 8136547
    Abstract: A poppet valve is disclosed that include a valve body, a poppet guide disposed inside the valve body so as to form a flow passage from a flow inlet to a flow outlet of the valve, a poppet shutter disposed inside the poppet guide, and a converging-diverging flow passage formed by a portion of an outer surface of the poppet shutter and a corresponding portion of an inner surface of valve body. A method for reducing a closing pressure force acting on a poppet shutter of a poppet valve is also disclosed.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: March 20, 2012
    Assignee: Nuovo Pignones, P.A.
    Inventors: Stefano Francini, Nicola Campo, Michele Bianchini
  • Patent number: 8056156
    Abstract: A vacuum relief unit and method for venting air into a pool pumping system when a pressure level within the system drops below a first pressure level limit. The unit includes a closed air chamber, a device for venting chamber air from the air chamber into the pool pumping system when the pressure level in the pool pumping system drops below the first pressure level limit, a device for venting atmospheric air into the air chamber when the pressure level within the air chamber drops below a second pressure level limit that is lower than the first pressure level limit, and a device for delaying operation of the atmospheric air venting device when the pressure within the air chamber is no longer below the second pressure level limit.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: November 15, 2011
    Inventor: Michael J. Ciochetti, Sr.
  • Patent number: 7938139
    Abstract: A reset relief valve with a body having an inlet port, an outlet port, and an interior wall partially defining an enclosed chamber, a piston disposed in the body and moveable between a first position at which the piston is disposed in fluid flow-blocking relationship between the inlet port and the outlet port of the body and a second position at which the piston is removed from that position, a piston having a head with opposed end surfaces one of which defines a portion of the enclosed chamber and at least one fluid flow passageway extending through the head and providing fluid communication between the enclosed chamber in the body, and a second chamber above a moveable disc in the piston and a pressure sensor in fluid communication with the fluid in the chambers. A preferred embodiment includes data acquisition software for monitoring data and storing pressure and other data to control the operation of the valve.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: May 10, 2011
    Assignee: RR Value, Inc.
    Inventor: Gerard S. Lazzara
  • Patent number: 7913715
    Abstract: A relief valve includes a body, a damping chamber in the body, a poppet in the body, wherein the poppet includes an end in the damping chamber, and a check valve in the damping chamber. The damping chamber is located adjacent an inlet side of the relief valve, and the check valve includes a sealing member to prevent fluid flow into the damping chamber at the inlet side. The sealing member is unseated during opening of the poppet to permit fluid to flow into the damping chamber at the inlet side.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: March 29, 2011
    Assignee: Ausco, Inc.
    Inventor: Francis J. Martin
  • Patent number: 7631656
    Abstract: A pressure control valve includes a housing, a piston within the housing, a biasing means within the housing for biasing the piston to seat in a first position for limiting fluid communication between an inlet port of the housing and an outlet port of the housing, and an insert cooperating with the biasing means for setting a pressure differential between an inlet side of the piston and an outlet side of the piston that unseats the piston from the first position for establishing fluid communication between the inlet port and the outlet port.
    Type: Grant
    Filed: November 16, 2005
    Date of Patent: December 15, 2009
    Assignee: Bendix Commercial Vehicle Systems LLC
    Inventors: Fred Hoffman, Leonard Quinn
  • Patent number: 7628016
    Abstract: A method of effecting multi-stage supercharging in internal combustion machines comprising a supercharging system, wherein fresh air is first routed through a low-pressure compressor. At least a portion of the compressed air stream is compressed further in a high-pressure compressor, and the rest of the fresh air compressed in the low-pressure compressor is routed around the high-pressure compressor via a compressor bypass. All the fresh air is ultimately delivered to the internal combustion engine. The compressor bypass is opened or closed by a self-actuating valve in dependence on the differential pressure, the compressor bypass opening as soon as the pressure downstream from the high-pressure compressor is lower than the pressure upstream of the high-pressure compressor.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: December 8, 2009
    Assignee: Robert Bosch, GmbH
    Inventor: Guenther Vogt
  • Patent number: 7624748
    Abstract: The invention relates to a valve which is insertable into a receiving recess (21) of a valve carrier (22), the valve (1, 1?) comprising a first housing part (2, 2?) and a closing body (4). The closing body (4) cooperates with a sealing surface (9) to form a sealing seat, the valve (1, 1?) being fixable in the receiving recess (21) of the valve carrier (22) by means of the first housing part (2, 2?). A second housing part (3, 3?) is connectable by way of a first end (7) to the first housing part (2, 2?) and the sealing surface (9) cooperating with the closing body (4) is formed on the second housing part (3, 3?).
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: December 1, 2009
    Assignee: Brueninghaus Hydromatik GmbH
    Inventor: Clemens Krebs
  • Patent number: 7591282
    Abstract: The valve comprises a housing defining a flow passage, an outer cylindrical wall, an inner cylindrical wall, and a valve seat. An annular cavity is formed between the outer cylindrical wall and the inner cylindrical wall. A valve member is slidably mounted within the housing. The valve member includes an annular skirt section extending in the downstream direction. A downstream-facing portion of the valve member comprises a sealing portion configured to selectively engage the valve seat. The valve member is movable between an upstream no flow position, a downstream shutoff position, and a normal flow position intermediate the no flow position and the shutoff position. A biasing element is disposed between the housing and the valve member so as to bias the valve member away from the valve seat.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: September 22, 2009
    Assignee: Kermit L. Achterman & Associates, Inc.
    Inventor: Kermit L. Achterman
  • Patent number: 7591283
    Abstract: A relief valve assembly. The relief valve assembly has a housing that houses a sleeve element that surrounds a spool that has a spring guide disposed therein and is biased away from the spool by a spring. A fluid flow path is created from a valve exit of the assembly through the sleeve and spool via a series of openings, grooves and orifices in at least one position of the relief valve assembly. The fluid flow path acts to reduce pressure rise rate.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: September 22, 2009
    Assignee: Sauer-Danfoss, Inc.
    Inventors: Dennis O. Courtright, Enzo Soncini, Davide I. Davoli
  • Patent number: 7588047
    Abstract: A compressor bypass valve for multistage supercharging an internal combustion engine equipped with a supercharging system. The valve includes a displacement body accommodated in a valve housing. The displacement body is divided into a first displacement part and a second displacement part. The first displacement part, facing the upstream side, moves to close or open the bypass in response to a pressure differential.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: September 15, 2009
    Assignee: Robert Bosch, GmbH
    Inventor: Guenther Vogt
  • Patent number: 7552743
    Abstract: A flow shut off valve for residential water line pressure includes a housing having an inlet, an outlet and a passage there between with a valve seat in the passage. A valve element is slidably mounted within the passage and includes a cavity open to the inlet and orifices partially restricting flow from the cavity to the passage. A spring biases the valve element toward the inlet. Reduced back pressure at the outlet drives the valve element into a closed position with a sealing surface against the valve seat to terminate flow. The restrictive orifices in the valve element extend from the cavity to the periphery of the valve element and, in a position toward the inlet, the restrictive orifices are closed by the housing to block communication between the inlet and the outlet. In an intermediate position, the orifices are open and the sealing surface is not against the valve seat. A motion damper may be employed to allow for start-up conditions on sprinkler systems and the like.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: June 30, 2009
    Assignee: Kermit L. Achterman & Associates, Inc.
    Inventor: Kermit L. Achterman
  • Patent number: 7513270
    Abstract: A safety relief valve provides for the equalization of backpressure across a valve spindle by providing for flow of fluid between equal sized upper and lower surfaces of the spindle in order to render the valve set point independent of backpressure, such that opening characteristics are controlled solely by the setting of the valve control spring. A seal preferably formed of TEFLON® is provided to prevent the escape of fluid from the valve body, which would otherwise adversely affect the pressure balance between the upper and lower surfaces.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: April 7, 2009
    Assignee: Flow-Safe, Inc.
    Inventors: Kevin P. Martin, Nelson R. Timm
  • Patent number: 7429167
    Abstract: A discharge valve assembly is provided for preventing reverse rotation of a scroll compressor. The discharge valve assembly includes a cup-shaped valve member slidably engaged with a central post of a retainer member. The cup-shaped valve member includes notches in communication between the central post of the retainer and the sidewalls of the cup-shaped valve member.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: September 30, 2008
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Ron Bonear, Michael Perevozchikov, Kirill Ignatiev
  • Publication number: 20080190486
    Abstract: A reset relief valve with a body having an inlet port, an outlet port, and an interior wall partially defining an enclosed chamber, a piston disposed in the body and moveable between a first position at which the piston is disposed in fluid flow-blocking relationship between the inlet port and the outlet port of the body and a second position at which the piston is removed from that position, a piston having a head with opposed end surfaces one of which defines a portion of the enclosed chamber and at least one fluid flow passageway extending through the head and providing fluid communication between the enclosed chamber in the body, and a second chamber above a moveable disc in the piston and a pressure sensor in fluid communication with the fluid in the chambers. A preferred embodiment includes data acquisition software for monitoring data and storing pressure and other data to control the operation of the valve.
    Type: Application
    Filed: February 5, 2008
    Publication date: August 14, 2008
    Inventor: Gerard S. Lazzara
  • Patent number: 7360557
    Abstract: A check valve includes a valve housing having a first housing portion including an inlet and a second housing portion having an outlet. A poppet valve is received in the housing and includes an outer surface having a diameter greater than the diameters of the inlet and outlet. A valve guide is also received in the valve housing and defines a variable volume pressure cavity and a fluid flow path. The valve guide is adapted to provide the variable volume pressure cavity in communication with the fluid flow path. A resiliently compressible member is adapted to bias the poppet valve toward a closed position against a flow of fluid through the check valve and a low pressure force created in the variable volume pressure cavity by virtue of the fluid flow through the valve guide.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: April 22, 2008
    Assignee: Eaton Corporation
    Inventor: William T. Flynn
  • Publication number: 20080006331
    Abstract: To provide a differential pressure valve which is capable of suppressing generation of noise when a variable displacement compressor is being operated at its minimum displacement. A hollow cylindrical protruding portion of a valve element, which is disposed in a manner surrounding a hollow cylindrical valve seat, is configured to have two windows formed at circumferentially one-sided locations as openings of a sleeve valve. As a result, the difference is generated between areas of regions of an inner peripheral surface of the hollow cylindrical protruding portion circumferentially separated by the windows, to thereby make transverse load unbalanced, so that the valve element performs opening and closing operations always in a state in which the hollow cylindrical protruding portion is transversely pressed against the hollow cylindrical valve seat.
    Type: Application
    Filed: June 14, 2007
    Publication date: January 10, 2008
    Applicant: TGK Co., Ltd.
    Inventors: Toshiyuki Shiota, Yoichi Miura
  • Patent number: 7311117
    Abstract: A reset relief valve with a body having an inlet port, an outlet port, and an interior wall partially defining an enclosed chamber, a piston disposed in the body and moveable between a first position at which the piston is disposed in fluid flow-blocking relationship between the inlet port and the outlet port of the body and a second position at which the piston is removed from that position, a piston having a head with opposed end surfaces one of which defines a portion of the enclosed chamber and at least one fluid flow passageway extending through the head and providing fluid communication between the enclosed chamber in the body, and a second chamber above a moveable disc in the piston. A preferred embodiment includes the crank assembly with cross bar support and a T-bar to prevent downward movement of the disc.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: December 25, 2007
    Assignee: RR Valve, Inc.
    Inventors: Gerard S. Lazzara, Ernest F. Cox
  • Patent number: 7287547
    Abstract: An inlet or outlet valve for a pump comprises a closing body (3) pretensioned by a spring element (4). The closing body (3) can open or close a passage on a valve seat (2). The valve also comprises a guide element (5) for guiding the closing body (3). Inside the guide element (5), the closing body (3) is guided at least on a first guiding area (9) and a second guiding area (10).
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: October 30, 2007
    Assignee: Siemens Aktiengesellschaft
    Inventors: Bernhard Arnold, Marc Hohmann
  • Patent number: 7168446
    Abstract: A check valve for use in a pump. The valve is arranged to be subjected to severe service conditions and high impact loads, yet be resistant to damage to its components. The check includes a body, a valve seat, a poppet and an impact cushion. The poppet is movably coupled to the valve seat and is biased by a spring into engagement with the valve seat. Upon the opening of the valve the poppet moves off of the valve seat and into engagement with the impact cushion against the spring bias. The impact cushion is movably coupled to the valve body and is biased by another spring. When the poppet engages the impact cushion they stay together and move, with the movement of the impact cushion absorbing energy from the poppet.
    Type: Grant
    Filed: May 13, 2005
    Date of Patent: January 30, 2007
    Assignee: Air Products and Chemicals, Inc.
    Inventors: David Jonathan Chalk, Thomas T. Hand, David John Farese
  • Patent number: 7159613
    Abstract: In the housing 1 of a hydraulic machine, the pressure Pi acts in the chamber 2. For this purpose, a passage opening 4 is provided, which is formed as a valve seat 5. A valve body 6 can be displaced longitudinally in the housing 1 and forms a pressure-tight spring chamber for an inner valve spring 21. The spring chamber is connected to the chamber 2 via a pressure equalizing hole 9. The prestress of the inner valve spring 21 can be set by means of a setting screw 18. In addition, there is an outer valve spring 22. Both the valve springs load the valve body 6 with the effect of closing it. The pressure equalizing valve described combines a compact design with an advantageous flow characteristic. When a maximum value of p1 is reached, the valve body 6 lifts off the valve seat 5 and hydraulic fluid from the chamber 2 flows away via the valve chamber 3.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: January 9, 2007
    Assignee: Sauer-Danfoss, Inc.
    Inventors: Reinhardt Thoms, Bernd Hames, Markus Reimer
  • Patent number: 7159605
    Abstract: A chatter resistant shuttle valve is provided to direct fluid flow from at least two sources of pressurized fluid to a downstream apparatus. The shuttle valve includes a valve body with a shuttle valve member movably mounted inside. A dampening chamber is provided which dampen opening movement of the shuttle as it moved from a closed position on one side of the shuttle toward a closed position on the other end of the shuttle. One or more dampening chambers may be provided.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: January 9, 2007
    Assignee: Gilmore Valve Co., Ltd.
    Inventors: Thomas B. Thrash, Jr., Rodney C. Hope
  • Patent number: 7121267
    Abstract: An integrated pressure management apparatus, system and method for minimizing resonance of a poppet. A housing defines a fluid communication passage between ports. The housing includes a first portion, which extends along an axis, and has a first surface parallel to the axis. A poppet is movable between a first configuration that prevents fluid communication between the ports, and a second configuration that permits fluid communication between the ports. The poppet includes a second portion. The second portion is translatable along the axis relative to the housing, and includes a tubular stem that has a second surface parallel to the axis. The second portion nests with the first portion so as to define a gap between the first and second surfaces. The first and second portions define a chamber, and the gap restricts fluid flow between the fluid communication passage and the chamber.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: October 17, 2006
    Assignee: Siemens VDO Automotive, Inc.
    Inventors: Paul Perry, Andre Veinotte
  • Patent number: 7121812
    Abstract: A high pressure fluid jetting system generally includes a fluid cylinder pump, a drive assembly, a pressurized liquid supply and an applicator gun. The drive assembly includes a diesel engine or electric powered motor which drives a rotatable drive shaft. The drive shaft drives a triple plunger which are reciprocally driven. A valve seat assembly and a cylindrical cartridge seal assembly define a cartridge which contains a reciprocating plunger shaft. The primary high wear parts are located therein. The cartridge is retained within the manifold cartridge opening yet is readily accessible by removal of the manifold. The pump output is primarily determined by the diameter of the plunger the length of the stroke, the number of cylinders, and the speed of the pump. A specific cartridge allows replacement of all the components which interface with a plunger shaft of a predetermined diameter such that a change in pump output or repair is readily achieved by straightforward cartridge replacement.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: October 17, 2006
    Assignee: NLB Corp.
    Inventor: Jamie A. Forrest
  • Patent number: 7117885
    Abstract: A reset relief valve with a body having an inlet port, an outlet port, and an interior wall partially defining an enclosed chamber, a piston disposed in the body and moveable between a first position at which the piston is disposed in fluid flow-blocking relationship between the inlet port and the outlet port of the body and a second position at which the piston is removed from that position, a piston having a head with opposed end surfaces one of which defines a portion of the enclosed chamber and at least one fluid flow passageway extending through the head and providing fluid communication between the enclosed chamber in the body, and a second chamber above a moveable disc in the piston. A preferred embodiment includes the crank assembly with cross bar support and a T-bar to prevent downward movement of the disc.
    Type: Grant
    Filed: February 6, 2004
    Date of Patent: October 10, 2006
    Assignee: RR Valve, Inc.
    Inventors: Gerard S. Lazzara, Ernest F. Cox
  • Patent number: 7033151
    Abstract: A check valve of a scroll compressor which has a driving unit inserted in a casing and generating a driving force and a compression unit consisting of an orbiting scroll and fixed scroll for compressing and discharging fluid when the driving unit is driven, includes: a valve guide having one side fixed at an upper surface of the fixed scroll and having a certain space at an upper side of a discharge passage of the fixed scroll through which fluid is discharged, and a valve member with one side fixed at the upper surface of the fixed scroll, being slidably disposed in an horizontal direction at an inner surface of the valve guide, and performing an opening and closing operation on the discharge passage (34) by being slid in a horizontal direction of the valve guide.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: April 25, 2006
    Assignee: LG Electronics Inc.
    Inventor: Su-Chul Kim
  • Patent number: 6971862
    Abstract: An apparatus for preventing overheat of a scroll compressor comprising: an overload preventing device for connecting or cut off a power source by a temperature and a current; a valve housing formed as a predetermined shape and fixedly coupled to the fixed scroll; a volume type valve movably inserted into the valve housing for opening and closing the discharge hole of the fixed scroll; and a valve pressurizing means located in the valve housing for increasing an input current by pushing the volume type valve and thus by blocking the discharge hole when temperature of discharge gas discharged to the discharge hole of the fixed scroll is more than a predetermined temperature. Accordingly, when a temperature of discharge gas is drastically or gradually increased and thus becomes a preset high temperature by several conditions at the time of driving the compressor, a driving of the overheated state is stopped by an immediate reaction thus to prevent a component damage.
    Type: Grant
    Filed: January 7, 2004
    Date of Patent: December 6, 2005
    Assignee: LG Electronics Inc.
    Inventor: Dong-Koo Shin
  • Patent number: 6918381
    Abstract: A fuel return valve comprises a housing and a closing unit, a first passage, which is line-connected to a fuel pump, a second passage, which is line-connected to an internal combustion engine, and a third passage, which is line-connected to the fuel tank, as well as a pressure chamber, being formed in the housing, which pressure chamber is in communication with the first passage, and, via the closing unit, with the third passage. To make a valve of this type maintenance-free and simple and inexpensive to produce, the closing unit is a piston which is guided in the housing attachment and is pressed by a spring arranged and supported in the housing attachment onto a sealing surface which is formed on the housing and surrounds the pressure chamber, and an annular chamber which is in communication with the third passage and with the space containing the spring is formed outside the sealing surface.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: July 19, 2005
    Assignee: Tesma Motoren-und Getriebtechnik GmbH
    Inventor: Sandor Palvölgyi
  • Patent number: 6892709
    Abstract: A pressure regulator for use in regulating the outlet pressure of a pump for use in an engine comprises a piston member which is moveable with respect to an outlet opening under the influence of fluid pressure acting on the piston member to control the degree by which the outlet opening is obscured. The pressure regulator comprises a biasing arrangement for applying a biasing force to the piston member which opposes the pressure of fluid acting on the piston member. The biasing arrangement comprises a moveable abutment member which is cooperable with a stop member so as to vary the rate at which the displacement of the piston member varies with fluid pressure acting on the piston member. The stop member is pre-set in a fixed position relative to the regulator housing such that movement of the abutment member is terminated when the abutment member is urged into engagement with the stop member. The invention also relates to a transfer pump comprising a pressure regulator.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: May 17, 2005
    Assignee: Delphi Technologies, Inc.
    Inventor: Daniel Jeremy Hopley
  • Patent number: 6810907
    Abstract: In a hydraulic tensioner having a relief valve mechanism in which a spring-biased valve element is reciprocable in a bore, hitting sounds produced by collision of the relief valve element with a plug in the bore, and wear and breakage of the biasing spring, are prevented by providing an oil relief hole in a peripheral wall of the relief valve bore at a position where it is closed by the relief valve element when he relief valve element is moved by a rapid increase in oil pressure.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: November 2, 2004
    Assignee: Tsubakimoto Chain Co.
    Inventors: Hiroshi Hashimoto, Yoshio Kurokawa, Tsutomu Namie, Nobuyuki Fujimoto
  • Patent number: 6736161
    Abstract: The invention relates to a pressure regulating valve comprising a valve body having one or more inlet openings and one or more outlet openings for a pressurized medium, an internal cavity connecting said inlet and outlet openings and a piston which is in contact with a valve seat between inlet and outlet and is axially slidable in the cavity in the valve body against a spring, which biases the piston to a closed position, whereby the valve opens when a predetermined pressure acts on the piston. The valve body is provided with an opening at its outlet side, where the cross-section of the opening is smaller that the cross-section of the cavity and which opening is in connection with a volume limited by the piston and the lower section of the internal cavity, whereby the pressure drop across the valve dampens variations in the volume.
    Type: Grant
    Filed: April 9, 2002
    Date of Patent: May 18, 2004
    Assignee: Ford Global Technologies, LLC
    Inventors: Per-Olof Kjellander, Staffan Rengmyr
  • Patent number: 6698446
    Abstract: A check valve with an elongated body and a hole extending from an inlet end to an outlet end. A piston assembly is mounted within the body and can include a piston, a check valve seal and a piston spring. The piston spring biases the piston to a first piston location preventing air from flowing from the inlet toward the outlet end. The check valve seal can be positioned on the piston assembly to seal against either a check valve seat or the inside diameter of the hole to restrict air flow when the piston is in the first piston location. Movement of the piston to a downstream piston location can remove the check valve seal from the check valve seat and/or from the inside diameter of the hole, allowing air to flow from the inlet end toward to outlet end.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: March 2, 2004
    Assignee: R. Conrader Company
    Inventor: James P. Cornwell
  • Publication number: 20040007261
    Abstract: A check valve with an elongated body and a hole extending from an inlet end to an outlet end. A piston assembly is mounted within the body and can include a piston, a check valve seal and a piston spring. The piston spring biases the piston to a first piston location preventing air from flowing from the inlet toward the outlet end. The check valve seal can be positioned on the piston assembly to seal against either a check valve seat or the inside diameter of the hole to restrict air flow when the piston is in the first piston location. Movement of the piston to a downstream piston location can remove the check valve seal from the check valve seat and/or from the inside diameter of the hole, allowing air to flow from the inlet end toward to outlet end.
    Type: Application
    Filed: July 12, 2002
    Publication date: January 15, 2004
    Inventor: James P. Cornwell
  • Patent number: 6675823
    Abstract: A gap 11 between a flange 4A of a bail support member 4 and the inner circumferential surface of a sleeve member 7 functions as an orifice for restricting an oil flow downstream of a seat hole (6B). The movement of the ball support member 4 is stabilized, pressure is generated in a chamber 9 downstream of a seat hole 6B, and the override characteristics of the relief valve 1 are improved.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: January 13, 2004
    Assignee: Kayaba Industry Co., Ltd.
    Inventors: Maoying Guo, Hideki Tsuchiya, Kiyokazu Nagata
  • Patent number: 6676105
    Abstract: A reservoir is provided for a hydraulic dampening chamber at the end of a spool valve with a snap on cap having a labyrinth or baffled fluid entry passage formed in the closed end of the cap.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: January 13, 2004
    Assignee: Eaton Corporation
    Inventors: Robert A. Dayton, Don W. Hines, George Kasper
  • Patent number: 6622751
    Abstract: A pressure valve, particularly for a reciprocating piston pump for conveying pressure fluid in slip-controlled hydraulic brake systems, wherein the pressure valve has a valve seat body and a valve cover body with a pre-tensioning element and a valve element installed in the space formed between the valve seat body and the cover body, which is particularly economical to manufacture, easy to install and particularly safe because of the valve seat body and the valve cover body being manufactured by non-cutting process.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: September 23, 2003
    Assignee: Continental Teves AG & Co., OHG
    Inventors: Erhard Beck, Hans-Dieter Reinartz, Günther Vogel
  • Patent number: 6581632
    Abstract: In a poppet valve the guide attachment (2) of each sealing member (1) together with the spring (5) is arranged and supported in a cup-like suspension member (8) inserted in a continuous receiving bore (15) in the catcher plate (3) and is guided with its external periphery at least in part directly on the internal periphery of the suspension member (8), as a result of which the guide length of the sealing member (1) and thus the length of stroke thereof becomes independent of the thickness of the catcher plate (3). As a result, the production, assembly and storage are simplified and new fields of application for valves of this type are opened up.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: June 24, 2003
    Assignee: Hoerbiger Kompressortechnik Services GmbH
    Inventors: Jim Walpole, Greg Reback
  • Patent number: RE41861
    Abstract: A decouple check-relief valve for use in a hydraulic fluid circuit is provided that has a cylinder guide housing which travels during the check function of the valve. The cylindrical guide housing has a clearance parameter, allowing for the selection of an optimal check response time. A dampening disk is provided inside the cylindrical guide housing, traveling within the guide during the relief function of the valve. The dampening disk has a separate clearance parameter, allowing for the selection of an optimal dampening capacity and fluid circuit stability. As such, the check and relief clearance parameters are independent of each other to allow both the check and relief functions of the valve to be optimized.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: October 26, 2010
    Inventor: Kevin J. Landhuis