With Retarder Or Dashpot Patents (Class 137/514)
  • Patent number: 11434629
    Abstract: A sanitary insertion unit (1), including an insertion housing (6), in which insertion housing a valve having a valve piston (10) is provided, which valve piston is slidably guided in the insertion housing and can be moved from a resting position under the pressure of the inflowing water against the restoring force of at least one restoring element (11). The restoring unit has at least one movement damper (12, 13), which damps or brakes the movement of the valve piston from the resting position to the open position.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: September 6, 2022
    Assignee: NEOPERL GMBH
    Inventor: Marc Tempel
  • Patent number: 10746249
    Abstract: A damping valve includes a damping valve body having at least one throughflow orifice which is at least partially covered by at least one valve disk by the action of a closing force. At least one spring body exerts an opening force on the valve disk that is less than the closing force. The at least one spring body is constructed as an elastomeric body separately from the control edge.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: August 18, 2020
    Assignee: ZF Friedrichshafen AG
    Inventors: Aleksandar Knezevic, Jörg Rösseler
  • Patent number: 10627036
    Abstract: A valve system includes: a valve; a hydraulic cylinder attached to at least a portion of the valve; and at least a first accumulator in fluid communication with the hydraulic cylinder. The first accumulator includes: (i) a first end having a fluid inlet and a fluid outlet; (ii) a second end having a gas inlet; and (iii) a body positioned between the first end and the second end and which includes a fluid chamber and a gas chamber separated by a flexible separating member. The hydraulic cylinder is configured to close the valve in response to pressure provided by fluid distributed from the first accumulator.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: April 21, 2020
    Assignee: Red Valve Company, Inc.
    Inventor: Bruce M. Platusich
  • Patent number: 10502342
    Abstract: A check valve for a fluid system includes: a valve body defining an inlet, an outlet, and an interior cavity; a closing member positioned inside the interior cavity, the closing member movable between an open position, providing fluid communication between the inlet and outlet, and a closed position, isolating the inlet from the outlet; and a buffer mounted on the valve body, the buffer configured to hold a portion of fluid in the fluid system and cushion movement of the closing member from the open position to the closed position.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: December 10, 2019
    Assignee: Mueller International, LLC
    Inventors: Jeff Milroy, Stephen J. Smick
  • Patent number: 10240431
    Abstract: A device in accordance to an embodiment includes a tubular housing having an inside diameter defining an axial bore, a top surface and an outer surface, a groove formed along the outer surface below the top surface, a flapper pivotally connected with the housing and pivotal between an open position to allow flow through the bore and a closed position to block flow through the bore and a torsion spring having a spring diameter and disposed in the groove and in connection with the flapper to bias the flapper to one of the open and the closed position. The torsion spring may be nested in a C-shaped groove.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: March 26, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Richard T. Caminari, Frank Edward Coss
  • Patent number: 10151284
    Abstract: The invention relates to a pressure regulator for a high-pressure ramp of a system for injecting fuel into an internal combustion engine, comprising a solenoid valve element (10) which receives an electromagnet (40). The electromagnet controls a needle (20) that closes a valve seat (30) which is connected to a high-pressure inlet and opens into a discharge chamber (13), said discharge chamber communicating with a liquid recirculation system (5) by means of outlet openings (14). The rear face (12) of the solenoid valve element (10) receives a coil (40) which controls the opening process of an armature (41) that is rigidly connected to the needle (20) and is subject to a closing return spring (25). The discharge chamber (13) is located on the front face (11) of the solenoid valve element (10) on the axis (XX) of the needle (20), and the discharge chamber surrounds the needle.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: December 11, 2018
    Inventor: Lionel Bruyere
  • Patent number: 9970571
    Abstract: A pressure control valve capable of preventing or suppressing the occurrence of the flaw that a pilot valve element which receives hydraulic pressure from a hydraulic fluid vibrates and hits a pilot valve seat member producing strange noise when the pilot valve element is in an opening state without resulting in an increase in number of components and assembling man-hours, the pressure control valve is provided with a main valve part containing a main valve element and a valve housing that includes a main valve seat on which the main valve element is able to be seated and a pilot chamber in which the main valve element is put in a slidable manner, and a pilot valve part containing a pilot valve element and a pilot valve seat member that includes a pilot valve seat on which the pilot valve element is able to be seated, the pilot valve element moving apart from the pilot valve seat to open when pressure in the pilot chamber exceeds a predetermined pressure.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: May 15, 2018
    Assignee: SHIMADZU CORPORATION
    Inventor: Junya Kuromusha
  • Patent number: 9920810
    Abstract: The present invention relates to a damping valve for a shock absorber, comprising a base body with a first support body and with a second support body and comprising one or more valve spring discs which separate a first damping fluid space from a second damping fluid space, wherein the valve spring discs are supported against the first support body via an inner edge support, and against the second support body via an outer edge support, and which control a passage of damping fluid in both directions by virtue of the fact that the valve spring discs lift-off either from the inner edge support or from the outer edge support, by elastic deflection. According to the invention, a stroke movable control body is provided which is prestressed against the valve spring discs, so that the control behaviour of the valve spring discs can be adjusted via the edge supports by the prestress of the control body.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: March 20, 2018
    Assignee: THYSSENKRUPP BILSTEIN GMBH
    Inventors: Dmitrij Smeljanskij, Klaus Schmidt, Ole Götz, Wolfgang Hamers, Freddy Woenarta
  • Patent number: 9863422
    Abstract: The invention concerns an outlet valve, in particular of a vacuum pump, with a main valve spring which, in a closed state of the outlet valve, closes at least one outlet opening from which the main valve spring lifts off on opening of the outlet valve, and with a hold-down element which forms a stop for the main valve spring on opening, wherein at least one additional valve spring is arranged between the main valve spring and the hold-down element. The invention is distinguished in that in closed state of the outlet valve, the additional valve spring is partly spaced from the main valve spring in the opening direction, in particular spaced with a free end from a free end of the main valve spring.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: January 9, 2018
    Assignee: MAGNA POWERTRAIN BAD HOMBURG GMBH
    Inventor: Iustin Tirgovet
  • Patent number: 9752696
    Abstract: Embodiments of the present invention generally include a pressure relief system and methods of use, in which an apparatus includes an upper chamber fluidly connected to a pressurized fluid source, a lower chamber having an inlet and an outlet, a vertically moveable plate intermediate the chambers and disposed within a plate support, and connected to the plate by a vertical shaft, a vertically actuating lower chamber inlet valve including an inlet seal. Pressure relief is accomplished by controlling fluid pressure in the upper chamber such that varying downward force on the plate and therefore, via the shaft, the inlet seal, allows for selective opening/closing of the inlet valve as a function of upper chamber fluid pressure relative to the pressure exerted from a fluid source for which pressure relief is desired, beneath the inlet seal, whereby over-pressured fluid entering the lower chamber via the inlet is vented out the outlet.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: September 5, 2017
    Inventor: Strom W. Smith
  • Patent number: 9739386
    Abstract: Provided is a check valve element enabling efficient supply of fluid while suppressing the occurrence of chattering. The check valve element is provided to be displaceable upstream and downstream in a downstream flow path extending downstream from a valve seat having an opening for introducing a fluid and is pressed against the valve seat by a pre-closing urging force applied thereto toward an upstream side.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: August 22, 2017
    Assignees: NITTO KOHKI CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuya Nishio, Hirofumi Onishi
  • Patent number: 9726293
    Abstract: An emergency shut-off valve includes a valve body defining an inlet, an outlet, a valve port between the inlet and the outlet, and an aperture. A valve assembly is positioned partially within the valve body and extends through the aperture. An actuator assembly is operatively coupled to the valve assembly to move the valve assembly between an open position and a closed position and includes a poppet and a rotatable shaft. The poppet is disposed within the valve body and is moveable between an open position that allows the flow of fluid through the valve body and a closed position that prevents the flow of fluid through the valve body. The shaft is coupled to the poppet and has a retaining member positioned within a slot in an arm of the poppet to prevent the poppet from being removed from the shaft.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: August 8, 2017
    Assignee: EMERSON PROCESS MANAGEMENT REGULATOR TECHNOLOGIES, INC.
    Inventors: Chen Jing, Ji Feifei
  • Patent number: 9709182
    Abstract: A pressure relief valve includes a valve body having an inlet and an outlet and defining a first fluid path fluidly connecting the inlet and the outlet of the valve; a valve member axially moveable between a first position and a second position, the valve member configured to close the fluid path in the first position and thereby restrict flow between the inlet and the outlet, the valve member configured to open the fluid path in the second position and thereby allow flow between the inlet and the outlet; a biasing element configured to bias the valve member in the first position; and a friction element resiliently biased laterally against an axially extending surface of the valve member to provide frictional resistance to movement of the valve member and thereby cause hysteresis in axial movement of the valve member between the first position and the second position.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: July 18, 2017
    Assignee: Parker-Hannifin Corporation
    Inventors: Geoffrey R. Zhang, Rodney K. Craven
  • Patent number: 9702601
    Abstract: An expansion valve includes a shaft for transmitting the drive force to a valve element and a vibration-proof spring, set between the body and the shaft, which generates the sliding friction by biasing the shaft. The vibration-proof spring includes a spring body of a hollow tube shape, a spring part, which is integrally formed with a side wall of the spring body, and a bulging portion formed on the spring part in a protruding manner such that the tip of the bulging portion is placed opposite to a part of the shaft. When the bulging portion abuts against the shaft inserted to the vibration-proof spring, the spring part is placed in a position along the spring body or is warped outwardly from the spring body, so that the elastically reactive force resulting from the warped spring part allows the shaft to slide in a stabilized manner.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: July 11, 2017
    Assignee: TGK CO., LTD
    Inventors: Ryosuke Satake, Takeshi Watanabe
  • Patent number: 9644625
    Abstract: A compressor has suction reed valves each of which includes a fixation portion fixed to the valve base plate, a basal portion that extends from the fixation portion and is separable from the plate, and a valve flap extending from the basal portion toward the distal end to selectively open and close the suction port. Each suction port has a shape elongated in the width direction, which is orthogonal to the longitudinal direction. The width of the basal portion is greater than that of the suction port. Each valve flap includes an opening-closing portion facing the corresponding suction port and stoppers, which project from the ends in the width direction. The side edges in the width direction are continuous from the stoppers to the basal portion to gradually approach the suction port. The cylinder block has pairs of recessed retainers. The stoppers contact the retainers.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: May 9, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Masakazu Obayashi, Hajime Kurita, Yasushi Suzuki, Yoshio Kimoto, Masaki Ota, Nobuaki Hoshino, Yusuke Yamazaki
  • Patent number: 9506470
    Abstract: The scroll refrigeration compressor according to the invention includes a sealed enclosure at least partially defining a discharge chamber designed to be connected to a discharge line, and a discharge valve attached on the sealed enclosure and fluidly connected to the discharge chamber. The discharge valve includes a valve body, a valve seat, and a discharge check valve movable between a covering position and a released position. The discharge valve includes deflection means positioned in the valve body and arranged to orient the flow of refrigerant coming from the discharge line at least partially toward the periphery of the discharge check valve.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: November 29, 2016
    Assignee: DANFOSS COMMERCIAL COMPRESSORS
    Inventors: Pierre Ginies, Dominique Gross, Christophe Ancel, Yves Rosson, Philippe Dugast
  • Patent number: 9427716
    Abstract: An apparatus for mixing a first fluid into a flow path (44) of a second fluid, said apparatus having a chamber (12), which encloses the flow path and exhibits a first inlet (13) for receiving the second fluid, a second inlet (15) arranged downstream of the first inlet for receiving the first fluid, as well as an outlet arranged downstream of the second inlet for discharging a mixture of the first fluid and the second fluid, said flow path extending from the first inlet to the outlet and said second inlet opening into the flow path, a throttle body (29), which is pivotally arranged inside the chamber for controlling the flow area of the flow path, and pivoting means (50, 51) for pivoting the throttle body for said controlling of the flow area.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: August 30, 2016
    Assignee: GL&V Luxembourg S.å.r.l.
    Inventors: Ulf Jansson, Janos Björkström
  • Patent number: 9169935
    Abstract: Valves, and particularly check valves, are detailed. The valves may isolate a spring or other biasing member from flowing fluid so as to reduce the possibility of damage to the spring caused, for example, by chemicals contained in the fluid. In some versions of the valves, the spring may be positioned within a cavity of a cover sealed from the fluid.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: October 27, 2015
    Assignee: ZODIAC POOL SYSTEMS, INC.
    Inventor: Bruce W. Maskell
  • Patent number: 8973557
    Abstract: The invention relates to a fuel overflow valve for a fuel injection system, particularly for limiting the pressure in a low-pressure region of the fuel injection system. The fuel overflow valve has a valve housing, in which a valve member is disposed in a stroke-moving manner, the stroke movement of the valve member controlling a connection of an inlet to the valve housing to a release region. The valve member is loaded by a valve spring in the direction of a locking position in which the connection of the inlet to the release region is interrupted, and is loaded by the pressure present in the inlet in the opening direction. The valve member may carry out a further stroke in the locking direction beyond the locking position thereof, where the valve spring does not act upon the valve member.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: March 10, 2015
    Assignee: Robert Bosch GmbH
    Inventor: Volkhard Ammon
  • Publication number: 20150040998
    Abstract: Tunable check valves reduce valve-generated vibration to increase the reliability of tunable fluid ends. Selected improved designs described herein reflect disparate applications of identical technical principles (relating to, e.g., the vibration spectrum of an impulse). Tunable check valve embodiments comprise a family including, but not limited to, tunable check valve assemblies, tunable valve seats, and tunable radial arrays. Each such tunable embodiment, in turn, contributes to blocking excitation of fluid end resonances, thus reducing the likelihood of fluid end failures associated with fatigue cracking and/or corrosion fatigue. By down-shifting the frequency domain of each valve-closing impulse shock, initial excitation of fluid end resonances is minimized.
    Type: Application
    Filed: October 27, 2014
    Publication date: February 12, 2015
    Inventors: Dennis W. Gilstad, Barbara C. Gilstad
  • Patent number: 8944409
    Abstract: Tunable fluid ends reduce valve-generated vibration to increase fluid-end reliability. Tunable fluid end embodiments comprise a family, each family member comprising a fluid end housing with at least one installed tunable component chosen from: tunable check valve assemblies, tunable valve seats, tunable radial arrays and/or tunable plunger seals. Each tunable component, in turn, contributes to blocking excitation of fluid end resonances, thus reducing the likelihood of fluid end failures associated with fatigue cracking and/or corrosion fatigue. By down-shifting the frequency domain of each valve-closing impulse shock, initial excitation of fluid end resonances is minimized. Subsequent damping and/or selective attenuation of vibration likely to excite one or more predetermined (and frequently localized) fluid end resonances represents further optimal use of fluid end vibration-control resources.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: February 3, 2015
    Inventors: Dennis W. Gilstad, Barbara C. Gilstad
  • Patent number: 8827244
    Abstract: Tunable fluid ends reduce valve-generated vibration to increase fluid-end reliability. Tunable fluid end embodiments comprise a family, each family member comprising a fluid-end housing with at least one installed tunable component chosen from: tunable check valve assemblies, tunable valve seats, tunable radial arrays and/or tunable plunger seals. Each tunable component, in turn, contributes to blocking excitation of fluid end resonances, thus reducing the likelihood of fluid end failures associated with fatigue cracking and/or corrosion fatigue. By down-shifting the frequency domain of each valve-closing impulse shock, initial excitation of fluid end resonances is minimized. Subsequent damping and/or selective attenuation of vibration likely to excite one or more predetermined (and frequently localized) fluid end resonances represents further optimal use of fluid end vibration-control resources.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: September 9, 2014
    Inventors: Dennis W. Gilstad, Barbara C. Gilstad
  • Patent number: 8733402
    Abstract: A pressure control valve including a valve housing having a first opening and second opening. The valve housing including a valve member configured to control gas flow between the first opening and the second opening. The valve member is supported by a first membrane and a second membrane, both of which are formed on a single-piece membrane body.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: May 27, 2014
    Assignee: Mahle International GmbH
    Inventors: Leszek Goerlich, Stefan Ruppel, Hartmut Sauter
  • Patent number: 8544493
    Abstract: A water-hammer proof and silent check valve comprises a shell (1), a spring (9), a flow guide body (10) and a cowl (11). The flow guide body (10) is provided with flow blocking boards (4, 6) which project from the outer surface of the flow guide body (10) and are capable of rotating around installation shafts (3, 7). A plurality of flow blocking boards are arranged in the flow passage in the axial direction of the valve, so that most part of pressure energy and kinetic energy are undertaken by the flow blocking boards by grading when liquid flows back to the valve, thus ensuring that the water hammer with large energy is divided into multiple water hammers with relatively smaller energy so as to greatly reduce the inner stress of valve bearing parts.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: October 1, 2013
    Assignee: Guangdong Liansu Technology Industrial Co., Ltd.
    Inventors: Hongbin Huang, Jiyue Yang
  • Publication number: 20130192697
    Abstract: A valve member having a valve part and a piston part is accommodated in a piston accommodation cylinder part of a case reciprocatably, and a damper chamber that is substantially a sealed space is formed in an anti-valve seat side in the valve member so that fluid flows without flowing via the damper chamber. Accordingly, since the fluid does not pass through the damper chamber, a fluid force that occurs in the piston part due to a fluid flow does not change easily, thus it becomes difficult to increase hunting at the valve members. Moreover, in a vibrational component in the valve member reciprocating direction of the valve members, amplitude of the vibration can be decreased by a damping force generated in the damper chamber.
    Type: Application
    Filed: January 31, 2013
    Publication date: August 1, 2013
    Applicants: ADVICS CO., LTD., DENSO CORPORATION
    Inventors: DENSO CORPORATION, ADVICS CO., LTD.
  • Patent number: 8459298
    Abstract: A check valve for deterring intrusion into drain pipes comprises a body member having at least a first orifice and configured to mount on a drain pipe wherein the drain pipe is adapted to promote fluid flow in a single direction. Pivotably mounted on said body member will be a valve member. The mounting arrangement will provide a closed position that substantially occludes the first orifice and a range of open positions when the valve member is pivoted to open in the flow direction. In addition, at least one additional orifice is provided in either the body member or the valve member to permit fluid flow irrespective of the position of the valve member.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: June 11, 2013
    Assignee: Free Flow Products, LLC
    Inventors: William T. Valdez, Timothy J. Morrison
  • Patent number: 8443833
    Abstract: A valve is provided. The valve includes a flapper member. A barrel is coupled to the flapper member, the barrel having an interior volume and at least one movable vane within the interior volume. A shaft member is rotationally coupled to the barrel, the barrel having at least one stationary vane disposed within the interior volume.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: May 21, 2013
    Assignee: Hamilton Sundtrand Corporation
    Inventors: Jay Stradinger, Kevin Arthur Roberg, Rosanna Catricala Glynn
  • Publication number: 20130025712
    Abstract: A pipe break valve device includes a housing that has a recess continuous in a flow direction, a valve slide that is arranged displaceably in the flow direction in the recess, and a spatial volume of a throttle device that is arranged at least in regions between the outer wall of the valve slide and the inner wall of the housing. Throttle ducts that are present on the inlet side and on the outlet side are formed by a first gap and a second gap which are present in each case between the outer wall of the valve slide and the inner wall of the housing, and no sealing means are present between the inner wall of the housing and the outer wail of the valve slide.
    Type: Application
    Filed: July 25, 2012
    Publication date: January 31, 2013
    Applicant: Horst Thiele Maschinenbau-Hydraulische Gerate GmbH
    Inventor: Ewald THIELE
  • Patent number: 8256741
    Abstract: A pneumatic pressure regulating valve, the opening of which can be automatically changed in a pressure-related manner, including a control diaphragm that is subjected to a reference pressure, to the gas pressure as well as to a governor spring, wherein a change in the differential pressure causes an adjustment of the control diaphragm and the latter itself or a closing element actuated by it changes the opening through an outflow cross-section, and wherein a structure that is arranged adjacent to the outflow cross-section on the diaphragm side forms a stop for the control diaphragm or for the closing element in the closed position of said control diaphragm.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: September 4, 2012
    Assignee: Hengst GmbH & Co. KG
    Inventors: Uwe Meinig, Thomas May
  • Publication number: 20120205122
    Abstract: An apparatus for controlling flow of a fluid includes a closure member, a biasing member applying a biasing force to the closure member, and a sealing member receiving the closure member. A dampener is operatively connected to the closure member and may resist a force applied to the closure member. A fluid seal may be formed when the biasing member presses the closure member against the sealing member. The apparatus may include a wellbore tubular in which the fluid conduit is formed and the closure member and sealing member may cooperate to control fluid flow along the fluid conduit. The apparatus may include an actuator configured to control the force applied to the closure member. The actuator may adjust the biasing force, and/or the dampening force. Also, a controller may control the actuator and may be responsive to a signal generated at a surface location, a signal generated at a downhole location, and/or a signal generated by a sensor.
    Type: Application
    Filed: February 9, 2012
    Publication date: August 16, 2012
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Andreas Peter, Carsten Freyer, Thomas Kruspe, Hans-Jurgen Faber, Marcus Oesterberg
  • Patent number: 8240330
    Abstract: A compressor plate valve having a valve seat, a valve guard and a valve plate. The valve plate is moveable between the valve guard and valve seat to control fluid passage through passages in the seat, the guard, and the plate. A valve stem passes through the center of the valve guard and is attached to the center of the valve plate. The valve stem provides guidance for the plate valve to ensure parallel motion. In addition to sealing surfaces that oppose passages, the seat and plate have landing surfaces that provide a braking effect when the valve closes through squeeze film action.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: August 14, 2012
    Assignee: Southwest Research Institute
    Inventors: James J. Moore, Timothy C. Allison, Andrew H. Lerche
  • Patent number: 8225811
    Abstract: An apparatus for facilitating the removal of moisture from a compressed air tank has a tank with an interior volume, a tubular member positioned in communication with the tank and having an end adjacent the bottom of the tank, an air compressor interconnected to the tubular member for passing compressed air into the interior volume of the tank, a check valve positioned at an opposite end of the tubular member, a head pressure relief valve in communication with the tubular member, and a pressure switch cooperatively connected to the air compressor. The pressure switch opens the head pressure relief valve when an air pressure in the tank reaches a desired level so as to cause air and water in the tank to pass through the tubular member. The check valve serves to stop the passing of air and water after a period of time.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: July 24, 2012
    Inventor: Max Lieber
  • Patent number: 8152133
    Abstract: A pneumatic pressure regulating valve, the opening of which can be automatically changed in a pressure-related manner, including a control diaphragm that is subjected to a reference pressure, to the gas pressure as well as to a governor spring, wherein a change in the differential pressure causes an adjustment of the control diaphragm and the latter itself or a closing element actuated by it changes the opening through an outflow cross-section, and wherein a structure that is arranged adjacent to the outflow cross-section on the diaphragm side forms a stop for the control diaphragm or for the closing element in the closed position of said control diaphragm.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: April 10, 2012
    Assignee: Hengst GmbH & Co. KG
    Inventors: Uwe Meinig, Thomas May
  • Publication number: 20120060943
    Abstract: A water-hammer proof and silent check valve comprises a shell (1), a spring (9), a flow guide body (10) and a cowl (11). The flow guide body (10) is provided with flow blocking boards (4, 6) which project from the outer surface of the flow guide body (10) and are capable of rotating around installation shafts (3, 7). A plurality of flow blocking boards are arranged in the flow passage in the axial direction of the valve, so that most part of pressure energy and kinetic energy are undertaken by the flow blocking boards by grading when liquid flows back to the valve, thus ensuring that the water hammer with large energy is divided into multiple water hammers with relatively smaller energy so as to greatly reduce the inner stress of valve bearing parts.
    Type: Application
    Filed: January 15, 2010
    Publication date: March 15, 2012
    Applicant: GUANGDONG LIANSU TECHNOLOGY INDUSTRIAL CO., LTD.
    Inventors: Hongbin Huang, Jiyue Yang
  • Publication number: 20120048398
    Abstract: A slide-type pressure control valve having an improved damping behavior is described.
    Type: Application
    Filed: August 26, 2011
    Publication date: March 1, 2012
    Inventors: Klaus Schudt, Kurt Gensheimer
  • Patent number: 8096587
    Abstract: A vacuum brake booster includes a housing and a bent connecting element for connecting the vacuum brake booster to a vacuum source, wherein the connecting element includes a first connecting piece which extends through an opening in the brake booster housing into a vacuum chamber of the vacuum brake booster, a second connecting piece for connecting the connecting element to the vacuum source, and a multi-part housing with a first housing part which carries the first connecting piece and a second housing part which carries the second connecting piece arranged at a first angle to the first connecting piece.
    Type: Grant
    Filed: January 11, 2006
    Date of Patent: January 17, 2012
    Assignee: Lucas Automotive GmbH
    Inventors: Peio Ibarra Romero, Inaki Cia Vicuna, Ernesto Bravo Villamayor
  • Patent number: 7950621
    Abstract: A pneumatic pressure regulating valve, the opening of which can be automatically changed in a pressure-related manner, including a control diaphragm that is subjected to a reference pressure, to the gas pressure as well as to a governor spring, wherein a change in the differential pressure causes an adjustment of the control diaphragm and the latter itself or a closing element actuated by it changes the opening through an outflow cross-section, and wherein a structure that is arranged adjacent to the outflow cross-section on the diaphragm side forms a stop for the control diaphragm or for the closing element in the closed position of said control diaphragm.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: May 31, 2011
    Assignee: Hengst GmbH & Co. KG
    Inventors: Uwe Meinig, Thomas May
  • Publication number: 20110114203
    Abstract: An adjustable pressure relief valve for use in hydraulic circuits, particularly for controlling pressure transients—acceleration and deceleration—of hydraulic motors subject to inertia forces (progressive anti-shock pressure relief valves) is characterized by reduced leakage, involving a reduced influence of flow forces during valve control, as well as reduced pressure losses; these characteristics prevent the hydraulic motor from rotating when it is subject to a drive load and is not powered, eliminate vibrations and instability of valve-regulated pressure, especially at low flow rates, and ensure an adjustment value varying according to the flow rate through the valve. A further characteristic of the valve is the reduced number of its components, resulting in greater cost effectiveness.
    Type: Application
    Filed: July 8, 2009
    Publication date: May 19, 2011
    Applicant: WALVOIL S.P.A.
    Inventor: Matteo Mazzoni
  • Patent number: 7540301
    Abstract: A steel dampening ring rests on a wafer spring in an annular groove in a compressor valve stop plate to dampen the action of the plastic valve plate to prolong the life of the valve.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: June 2, 2009
    Inventor: Walter Tuymer
  • Patent number: 7493913
    Abstract: A vacuum relief safety valve includes a housing defining an inner chamber and attached to the suction-side of the swimming pool or spa pump. An air inlet aperture is formed in the housing so as to be open to ambient air. A sealing element is disposed within the housing and biased against the air inlet aperture by a spring so as to effectively seal the inner chamber of the housing from ambient air. When a maximum allowed vacuum level within the pump is exceeded, such as when a swimming pool drain is obstructed, the sealing element moves into the inner chamber and opens the air inlet aperture causing the pump to rapidly lose its prime and enabling removal of the entrapment.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: February 24, 2009
    Inventor: Hassan H. Hamza
  • Patent number: 7455070
    Abstract: A vacuum relief safety valve includes a housing defining an inner chamber and attached to the suction-side of the swimming pool or spa pump. An air inlet aperture is formed in the housing so as to be open to ambient air. A sealing element is disposed within the housing and biased against the air inlet aperture by a spring so as to effectively seal the inner chamber of the housing from ambient air. When a maximum allowed vacuum level within the pump is exceeded, such as when a swimming pool drain is obstructed, the sealing element moves into the inner chamber and opens the air inlet aperture causing the pump to rapidly lose its prime and enabling removal of the entrapment.
    Type: Grant
    Filed: January 23, 2006
    Date of Patent: November 25, 2008
    Inventor: Hassan H. Hamza
  • Patent number: 7445017
    Abstract: A mesovalve having a diaphragm situated between a first chamber and a second chamber. There may be an inlet and an outlet in the first chamber. The diaphragm may provide an orifice between the first and second chambers. There may be a first electrode on the diaphragm and a second electrode on an inside surface of the second chamber. The diaphragm may have first and second positions, or numerous variable positions. Applying a voltage across the electrodes may electrostatically move the diaphragm to the second position during which the outlet is at least partially opened for fluid communication with the inlet, the orifice is closed and the diaphragm is stopped in the second position by a cushioning fluid pressure in the second cavity to prevent pull-in. Removing the voltage from the electrodes may let the diaphragm return to the first position, open the orifice and close the outlet.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: November 4, 2008
    Assignee: Honeywell International Inc.
    Inventors: Eugen I. Cabuz, Cleopatra Cabuz, Virgil Claudiu Banu
  • Patent number: 7422029
    Abstract: A damping system, for a valve with a flapper movable between an open position and a closed position, comprises a main body and a piston. The main body has at least an inner wall that defines a chamber having fluid therein. The main body is coupled to the flapper, and is configured to move therewith. The piston is disposed at least partially within the chamber. The piston is configured to move within the chamber in a direction opposite the direction of movement of the main body when the flapper approaches the open position or the closed position, to thereby compress the fluid in a section of the chamber and slow movement of the main body. Movement of the flapper is thereby slowed when approaching the open position or the closed position.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: September 9, 2008
    Assignee: Honeywell International Inc.
    Inventors: Stuart K. Denike, Joseph J. Jira, G. Stephen McGonigle, Jeremiah J. Warriner
  • Patent number: 7395790
    Abstract: A reed valve assembly is provided with a body, at least one flexible member, and at least one rigid member. Preferably, the at least one flexible member has a periphery so as to substantially cover opening(s) in the body when positioned adjacent to the body, and the at least one rigid member has a periphery so as to limit deformation of the at least one flexible member.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: July 8, 2008
    Assignee: S&S Cycle, Inc.
    Inventors: Timothy T. Tiller, James Simonelli, Floyd Baker, David Roethel, Jeffrey Bailey, Bill Swiggum
  • Patent number: 7367134
    Abstract: A mechanized vent for a dishwasher employs a vent plate moving about a hinge axis as driven by a cam mechanism at a surface of the vent plate removed from the hinge axis.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: May 6, 2008
    Assignee: Illinois Tool Works, Inc.
    Inventors: Michael S. Osvatic, Michael K. Hintz, Joel C. Bragg, Jeffrey J. Krieger, Mark D. Rodaer
  • Publication number: 20080078458
    Abstract: A damping system, for a valve with a flapper movable between an open position and a closed position, comprises a main body and a piston. The main body has at least an inner wall that defines a chamber having fluid therein. The main body is coupled to the flapper, and is configured to move therewith. The piston is disposed at least partially within the chamber. The piston is configured to move within the chamber in a direction opposite the direction of movement of the main body when the flapper approaches the open position or the closed position, to thereby compress the fluid in a section of the chamber and slow movement of the main body. Movement of the flapper is thereby slowed when approaching the open position or the closed position.
    Type: Application
    Filed: September 29, 2006
    Publication date: April 3, 2008
    Inventors: Stuart K. Denike, Joseph J. Jira, G. Stephen McGonigle, Jeremiah J. Warriner
  • Publication number: 20080078459
    Abstract: A damping system for a valve with a flapper comprises a main body having at least an inner wall defining a chamber having fluid therein, a paddle disposed within the chamber, and a fluid channel. The paddle is coupled to the flapper and moved thereby between a first and second position when the flapper is in a closed and an open position, respectively, and is configured to force fluid from at least a section of the chamber when approaching the first or second position. The fluid channel is coupled to the chamber section, and is configured to allow fluid egress out of the chamber section at a first egress rate when the paddle moves from the first position to a predetermined intermediate position between the first and second positions, and at a second, lower egress rate when the paddle moves from the predetermined intermediate position to the second position.
    Type: Application
    Filed: September 29, 2006
    Publication date: April 3, 2008
    Inventors: Jeremiah J. Warriner, Joseph J. Jira, G. Stephen McGonigle, Stuart K. Denike
  • Patent number: 7350538
    Abstract: A pump assembly for a penile implant is provided having a mechanism which prevents spontaneous inflation of the cylinders implanted within the user. The preventative mechanism uses overpressure generated by the reservoir during unintentional compression to effectively seal the pump assembly from unintended fluid flow. The prevention mechanism itself creates all necessary forces to prevent the undesired fluid flow to the cylinders. This is accomplished by incorporating appropriate mechanisms within the pump itself.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: April 1, 2008
    Assignee: AMS Research Corporation
    Inventors: Charles C. Kuyava, John W. Westrum, Jr., David W. Clark
  • Patent number: 7350539
    Abstract: An electromagnetic controlled fuel injection apparatus has a poppet valve which controls the beginning and end of fuel injection by reciprocation. Inertia force and friction force arising from the reciprocating motion of the poppet valve are utilized effectively to suppress bounce of the poppet valve. The poppet valve has a sealed inside space, and a plurality of mass objects are received in the inside space so that the mass objects can move axially while contacting with each other in the inside space due to the inertia force generated by the reciprocating motion of the poppet valve.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: April 1, 2008
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Takashi Kaneko
  • Publication number: 20080072973
    Abstract: A damping system for a valve with a flapper comprises a main body having at least an inner wall defining a pneumatic chamber, a paddle disposed within the pneumatic chamber, and a plurality of orifices extending through the main body. The paddle is coupled to the flapper and moved thereby between a first position and a second position when the flapper is in a closed and an open position, respectively, and is configured to force gas out of the pneumatic chamber when moving to the first position or the second position. The plurality of orifices allow gas egress out of the pneumatic chamber at least at a first egress rate when the paddle moves from the first position to an intermediate position between the first and second positions, and at least at a second, lower egress rate when the paddle moves from the intermediate position to the second position.
    Type: Application
    Filed: September 25, 2006
    Publication date: March 27, 2008
    Inventors: G. Stephen McGonigle, Joseph J. Jira, Stuart K. Denike, Jeremiah J. Warriner