Biased Closed Patents (Class 137/596.2)
  • Patent number: 10337412
    Abstract: The invention may be embodied a valve for a combustor of a gas turbine, the valve including: a housing including a fluid inlet and fluid outlets; an actuator within the housing and movable between an open position and a closed position; a fluid path through the housing between the fluid inlet and the fluid outlets, wherein the fluid path is blocked while the actuator is in the closed positions such that fluid may not flow from the inlet to the outlets and fluid may not flow between the outlets, and wherein one of the fluid outlets is fluidly connected to a first combustion can of the combustor, and another of the fluid outlets is fluidly connected to a second combustion can of the combustor.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: July 2, 2019
    Assignee: General Electric Company
    Inventors: Kenneth Eugene Selfridge, Hua Zhang
  • Patent number: 10273651
    Abstract: A flow control manifold that routes pressurized fluid from one of a first fluid manifold connection and a second fluid manifold connection of the flow control manifold to an input of a work tool and directs return fluid from an outlet of the work tool to the other of the first and second fluid manifold connections not receiving pressurized fluid.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: April 30, 2019
    Assignee: Caterpillar Inc.
    Inventor: Jordan R. Beckhusen
  • Patent number: 10161110
    Abstract: A control valve device includes a valve block that switches the flowing direction of a working fluid supplied to and discharged from a boom cylinder and an arm cylinder (actuators). The valve block includes an actuator port connected to the boom cylinder, and a supply port, a discharge port, and a regeneration port communicating with the actuator port. A supply valve is provided between the actuator port and the supply port, and a discharge valve is provided between the actuator port and the discharge port.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: December 25, 2018
    Assignee: KYB Corporation
    Inventor: Toru Takeuchi
  • Patent number: 10023367
    Abstract: Displacement of a valve stem used in a liquid dispensing spout is prohibited by a lever mounted on a fulcrum. When a user-operated end of the lever is in a first position, the opposite end of the lever abuts a travel limiter. When the user-operated lever is in a second position, the opposite end of the lever points away from the travel limiter allowing the valve stem to be displaced.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: July 17, 2018
    Assignee: Scepter Manufacturing, LLC.
    Inventors: Luc Boucher, Rod Muir, Michael Sirois, Robert D Watters
  • Patent number: 9841112
    Abstract: A three-position booster valve mechanism includes an operating member for moving a supply and exhaust valve. A piston-cylinder control system is provided for moving the operating member between a first position in which the supply and exhaust valve are closed, a second position in which the supply valve is open and the exhaust valve is closed, and a third position in which the supply valve is closed and the exhaust valve is open. A pilot port is provided for moving the operating member in between the first, second and third positions in dependence of a pilot pressure. The piston-cylinder control system connects to the operating member at a central point of application in between the supply and exhaust valve. The operating member extends in opposing directions from the central point of application towards the supply and exhaust valve.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: December 12, 2017
    Assignee: Asco Controls B.V.
    Inventor: Henk Bakker
  • Patent number: 9810243
    Abstract: A switching valve includes a spool, a first cylinder port that communicates with the piston side chamber, a second cylinder port that communicates with the rod side chamber, a bridge passage having a first opening which is adjacent to the first cylinder port and a second opening which is adjacent to the second cylinder port, a regeneration passage formed in the spool to connect the second cylinder port communicating with the rod side chamber to the first cylinder port in accordance with a switching position of the spool, and a first communication port and a second communication port formed in the spool to communicate with the regeneration passage. The first communication port communicates with the second opening of the bridge passage, which is adjacent to the second cylinder port, and the second communication port communicates with the second cylinder port in accordance with the switching position of the spool.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: November 7, 2017
    Assignee: KYB Corporation
    Inventors: Takeshi Terao, Masayuki Nakamura
  • Patent number: 9791056
    Abstract: Disclosed is an energy-recycling hydraulic control main valve, which is provided with end covers, a valve core, a left one-way valve and a right one-way valve; the left one-way valve is composed of a left valve seat, a left cone valve core and a left spring; a conical surface of the left cone valve core is closely attached to a left conical surface of the valve core by the spring force; the right one-way valve is composed of a right valve seat, a right cone valve core and a right spring; and a conical surface of the right cone valve core is closely attached to a right conical surface of the valve core by spring force. The hydraulic main control valve can not only limit the falling speed of a piston, but use the potential energy generated by the gravity action on the piston, thereby achieving energy recycling.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: October 17, 2017
    Inventors: Liping Wang, Qiang Lu, Zhan Chen, Hongguang Liu, Guoliang Zhang
  • Patent number: 9611871
    Abstract: A valve assembly for receiving a fluid under pressure and comprising a plurality of valves in a single valve block. The assembly may include a plurality of check valves and including a counterbalance generating valve and a 3-way valve and including a method of use. The assembly may include an adjustable counterbalance valve, a pilot-operated check valve and a 3-way valve or combinations thereof.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: April 4, 2017
    Inventor: Norbert J. Kot
  • Patent number: 9488285
    Abstract: A line pressure valve includes a valve housing having a central cavity and a plurality of inlet and outlet ports, and a spool positioned within the central cavity and axially displaceable therein, the spool having a plurality of radial cutouts that fluidly connect respective inlet and outlet ports based on an axial position of the spool with respect to the valve housing. First and second pumps are fluidly connectable and disconnectable respectively to and from the fluid circuit based on the axial position of the spool via the inlet and outlet ports.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: November 8, 2016
    Assignee: Eaton Corporation
    Inventors: Adam C. Maurer, Jerry J. Brittan, Robert J. Kanda, Darren Firth, Melissa M. Koenig
  • Patent number: 9435358
    Abstract: A hydraulic directional control valve for activating a hydraulic load, comprising a housing with a pump connection for connecting to a pressure source, a tank connection for connecting to a hydraulic fluid reservoir and a first and second working connection for connecting to the hydraulic load, and a first and a second valve slide, which are held in the housing so as to be linearly movable in a displacement direction.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: September 6, 2016
    Assignee: DEERE & COMPANY
    Inventors: Andreas Remmelmann, Christian Brueser
  • Patent number: 9372487
    Abstract: The invention relates to a fluidic actuator comprising a drive element (2) that can be supplied with a pressure fluid and a two-stage proportional position controller (3) controlling the supply with pressure fluid to the drive element, said actuator comprising an electro-fluidic pilot stage (10) of the position controller, exactly one electromechanical transducer (14) and exactly one proportional valve (16) actuated by said transducer and having a pressure fluid inlet (18), a control pressure outlet (19) and a discharge outlet (20). A fluidic power stage (11) of the position controller comprises two poppet valves (24, 25) having associated pressure-to-distance converters that are supplied by a common control chamber (34) which is connected to the control pressure outlet (19) of the pre-stage (10).
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: June 21, 2016
    Assignee: Hoerbiger Automatisierungstechnik Holding GmbH
    Inventors: Daniel Haller, Max Schrobenhauser, Erich Rankl, Marcus Grodl
  • Patent number: 9228396
    Abstract: A tubing hanger landing system includes a tubing hanger running tool, a locking flowline to lock the tubing hanger running tool into a tubing hanger, and a lower body shear joint comprising a recovery valve. The recovery valve includes a valve body with a functional port, an operational port, a bi-directional port, and a relief port, and a valve piston positioned within the valve body and movable between an operational position and a relief position within the valve body. The functional port enables pressure to be communicated to the valve piston to move the valve piston from the operational position to the relief position, and, in the relief position, the valve piston provides fluid communication through a relief flowpath between the bi-directional port and the relief port to release pressure from the locking flowline.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: January 5, 2016
    Assignee: OneSubsea IP UK Limited
    Inventors: Sergio Yamahata, Carlos Aparecido de Oliveira
  • Patent number: 9022067
    Abstract: A solenoid valve module includes a first solenoid valve having a first solenoid portion and a first valve body and a second solenoid valve having a second solenoid portion and a second valve body. The first valve body and the second valve body are integrally formed by a solenoid housing. The solenoid valve module is secured to a surface of an engine to provide hydraulic control for an engine component.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: May 5, 2015
    Assignee: Eaton Corporation
    Inventors: Robert D. Keller, Robert J. Boychuk
  • Publication number: 20150114328
    Abstract: A control valve includes a valve body, which defines first, second, and third valve passageways. The valve body also defines a supply passageway. The control valve includes a first spool movable relative to the valve body between first and second positions. The control valve includes a second spool movable relative to the valve body between open and closed positions. The supply passageway is in fluid communication with the first valve passageway when the first spool is in the first position. The supply passageway is in fluid communication with the second valve passageway when the first spool is in the second position. The supply passageway is in fluid communication with the third valve passageway when the second spool is in the open position. The second spool precludes fluid flow between the supply passageway and the third valve passageway when the second spool is in the closed position.
    Type: Application
    Filed: January 13, 2014
    Publication date: April 30, 2015
    Inventors: Rolando Huerta, William P. Vukovich, Jorge A. Campuzano
  • Publication number: 20150083666
    Abstract: Described are water-on-water valves for use in reverse osmosis filtration systems. The water-on-water valves are regulated by the pressure in a product line, which contains fluid from a product line of the filter module and/or the product side of a water-on-water storage tank. Exemplary valves are shuttle valves that are regulated by the pressure downstream of the product side of a reverse osmosis filter module. The valves may comprise a piston within a housing, and an end of the piston may have an enlarged diameter relative to the maximum diameter of the remainder of the piston. The body of the piston may have sections of differing diameters, where the smaller diameter sections form flow channels, or the body may a diameter that is substantially the same along its length in conjunction with gratings and flow channels.
    Type: Application
    Filed: September 26, 2013
    Publication date: March 26, 2015
    Inventors: Laurence W. Bassett, Dian Zheng, David A. Carbo
  • Patent number: 8925582
    Abstract: The present invention relates to an oil control valve for a variable valve lift system that obtains in a stable manner a constant hydraulic pressure in the hydraulic line connecting the oil control valve and the vale lift control actuator, and thereby reliably controls valve lift according to the number of revolutions and load of the engine.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: January 6, 2015
    Assignee: Unick Corporation
    Inventors: Chang-Hoon Lee, Eui-Dong Roh, Ji-Hoon Park, Ki-Ryong Lee
  • Patent number: 8910659
    Abstract: A hydraulic valve device has a valve housing (10) in which an activating piston (16) is guided in a movable manner. The activating piston (16) is actuatable by an actuating device (18) and activates a pilot valve (20) to connect a fluid port (T) in the valve housing (10) to a fluid chamber (22) of a shut-off piston (24). The shut-off piston (24) activates at least one fluid-conducting connecting line (1, 2) of the valve device and has a fluid conducting control line (26) opening from the connecting line (1, 2) into the fluid chamber (22) of the shut-off piston (24).
    Type: Grant
    Filed: June 27, 2009
    Date of Patent: December 16, 2014
    Assignee: Hydac Filtertechnik GmbH
    Inventor: Winfried Rüb
  • Patent number: 8875736
    Abstract: A hydraulic control valve for heavy equipment is provided, which includes a valve body having a supply passage supplied with a hydraulic fluid from a hydraulic pump, ports for supplying the hydraulic fluid to an actuator or receiving the hydraulic fluid from the actuator, tank passages for returning the hydraulic fluid from the actuator to a hydraulic tank, and a first regeneration passage for supplying a part of the returned hydraulic fluid to the supply passage; a spool slidably installed in the valve body in accordance with supply of a pilot signal pressure from an exterior, and controlling flow of the hydraulic fluid supplied to the actuator from the supply passage during shifting; and a regeneration valve installed between the first regeneration passage and the tank passage, and including a piston moved by the hydraulic fluid from the hydraulic pump, a regeneration spool shifted by pressure fluctuation of the supply passage to variably adjust a flow rate of the hydraulic fluid discharged from the first r
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: November 4, 2014
    Assignee: Volvo Construction Equipment Holding Sweden AB
    Inventor: Man Suk Jeon
  • Patent number: 8727318
    Abstract: A camera dolly or camera crane has an arm pivotably attached to a chassis, and a hydraulic system including a hydraulic cylinder for raising the arm, a hydraulic valve and a valve control. The hydraulic valve has a normal operation mode where opening and closing of the valve is controlled by the valve control. The hydraulic valve is also provided with a float down mode, where the valve remains partially open providing an intentional slight leakage, regardless of operation of the valve control. In float down mode, as soon as the arm reaches its highest point, the arm automatically and instantaneously reverses direction and starts to move back down, in a smooth continuous movement. The hydraulic system may optionally also include a fast down valve, to allow the arm to move down quickly, even when minimally loaded.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: May 20, 2014
    Assignee: Chapman/Leonard Studio Equipment, Inc.
    Inventor: Leonard T. Chapman
  • Publication number: 20140075950
    Abstract: A minimum pressure shut-off valve closes off fuel flow responsive fuel pressure being below a predefined pressure. A sleeve includes at least a first flow window and a second flow window. The second window includes a notch providing a flow area based on an axial position of a spool moveable within the sleeve.
    Type: Application
    Filed: September 17, 2012
    Publication date: March 20, 2014
    Inventors: David J. Podgorski, Peter M. Ballard
  • Patent number: 8567436
    Abstract: A hydraulic assembly comprises a one-piece body attachable to the outside of the hydraulic machine near the hydraulic equipment and provided with at least one input hydraulic linkage connectable to a pressure line of the hydraulic circuit of the vehicle, at least one coupling suitable for the connection with a feeding input of a removable equipment and a pressure discharge hydraulic linkage connectable to a draining line, at least one normally closed discharge valve positioned between the linkage to a pressure line and the linkage to a draining line and a pressure discharge control operable so as to cause the opening of the at least one normally closed valve for the connection the pressure line to the draining line for discharging the pressure existing in the hydraulic circuit of the vehicle.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: October 29, 2013
    Assignee: Stucchi S.p.A.
    Inventors: Igor Polgati, Andrea Ursella
  • Patent number: 8522818
    Abstract: A booster valve comprising a housing having a signal port, an actuator port, a supply port, and an exhaust port disposed therein. Disposed within the housing are upper and lower plugs. The upper and lower plugs and the housing collectively define a signal chamber which fluidly communicates with the signal port, an actuator chamber which fluidly communicates with the actuator port, and a supply chamber which fluidly communicates with the supply port. The upper and lower plugs are selectively moveable between neutral, delivery and discharge positions. When in the neutral position, the actuator chamber is fluidly isolated from both the supply chamber and the exhaust port. When in the delivery position, the actuator chamber fluidly communicates with the supply chamber but is fluidly isolated from the exhaust port. Finally, when in the discharge position, the actuator chamber fluidly communicates with the exhaust port but is fluidly isolated from the supply chamber.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: September 3, 2013
    Assignee: STI Srl
    Inventor: Flavio Tondolo
  • Patent number: 8434517
    Abstract: The present invention relates to a control valve capable of performing capacity control independent of the pressure of operation fluid. In the control valve which opens and closes a first poppet valve and a second poppet valve by a solenoid section the following pressure-receiving areas relating to the first poppet valve and the second poppet valve are set to be substantially equal to each other: the first effective pressure-receiving area of a first pressure-sensing spring device, the second effective pressure-receiving area of a second pressure-sensing spring device, the first pressure-receiving area on the inner side of a portion where a first valve seat surface and a first valve section surface are in contact with each other, and the second pressure-receiving area on the inner side of a portion where a second valve seat surface and a second valve section surface are in contact with each other.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: May 7, 2013
    Assignee: Eagle Industry Co. Ltd.
    Inventor: Eiji Okamoto
  • Patent number: 8434519
    Abstract: Pressure regulator device comprising a body (1), a minimum of a pressure reducer and a damper mounted in control and damping cavities, respectively, in the body (1), and a control member (4) pivoting on an upper face (10) of the body (1). The device is noteworthy in that the control and damping cavities have open ends in a peripheral face (12) of the body (1) and the control member (4) has parts (47) that are opposite the peripheral face (12) in order to face the open ends of the respective control and damping cavities, from which control (21) and damping pushrods, respectively, project. The present invention has an application in the hydraulic remote controls of civil engineering machines.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: May 7, 2013
    Assignee: Bosch Rexroth D.S.I.
    Inventors: Gérard Larzoe, Laurent Drutel
  • Patent number: 8397759
    Abstract: The electromagnetic spool valve of the present invention includes a movable linear solenoid section, first and second spools that are coaxially provided in inner space of a valve body so as to switch a state of communication and discommunication among plural ports of the electromagnetic spool valve, a first spring member provided between the first and second spools, and a second spring member provided between a cap member and the second spool. The spring load of the second spring member is set to be greater than the spring load of the first spring member.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: March 19, 2013
    Assignee: Keihin Corporation
    Inventors: Naoki Oikawa, Shigeto Ryuen, Hiroyuki Kato
  • Patent number: 8353313
    Abstract: A three-port control valve assembly comprising a valve body having two valve seats facing in a common direction and disposed along a central bore terminating in an exhaust port and communicating with a supply port and a common port. A pintle shaft connected to a solenoid actuator extends into the central bore. A first valve head mounted on the pintle shaft mates with the first valve seat to connect the supply port to the common port. While the solenoid is de-energized, supply pressure keeps the first valve closed. A second valve head mates with the second valve seat to connect the common port to the exhaust port. Opening of the first valve closes the second valve via supply oil pressure. When the first valve closes, the second valve is opened by a spring disposed between the second valve head and the exhaust port.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: January 15, 2013
    Assignee: Delphi Technologies, Inc.
    Inventor: Michael J. Dinkel
  • Patent number: 8322376
    Abstract: In one embodiment, a solenoid valve includes a supply port that fluidly communicates with a source of compressed air, a delivery port, a bore that selectively fluidly communicates with the supply and delivery ports, an armature in the bore, a pole piece in the bore, and a coil that is selectively energized with electrical power. The coil is around the armature and pole piece. The armature and pole piece selectively sealingly engage and move as an armature/pole piece single unit as a function of the electrical power in the coil. A position of the armature/pole piece within the bore controls fluid communication between the supply port and the delivery port.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: December 4, 2012
    Assignee: Bendix Commercial Vehicle Systems, LLC
    Inventor: Thanh Ho
  • Patent number: 8291934
    Abstract: A valve assembly includes a valve housing defining a service passage, a first bore in fluid communication with the service passage, a first passage, a second bore in communication with the service passage and a second passage. The first bore has an inlet portion, a first service portion in communication with the service passage, and a first load holding portion. The first passage is in communication with the first load holding portion and the service passage. The second bore has a return portion, a second service portion in fluid communication with the first service passage, and a second load holding portion. The second passage is in selective communication with the second load holding portion of the second bore and the return passage. A valve is disposed in the second passage. The valve allows fluid to flow only in a direction from the second load holding portion to the return passage.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: October 23, 2012
    Assignee: Eaton Corporation
    Inventors: Wade Leo Gehlhoff, Chris William Schottler
  • Patent number: 8201401
    Abstract: A passive valve assembly for a vehicle exhaust system includes an exhaust component that defines an exhaust gas flow path and a vane that is positioned within the exhaust gas flow path. The vane is positioned at an initial start position and is movable between a closed position to provide a minimum exhaust gas flow and an open position to provide a maximum exhaust gas flow. The start position is orientated at a negative angle relative to the closed position.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: June 19, 2012
    Assignee: Emcon Technologies, LLC
    Inventors: Kwin Abram, Robin Willats
  • Patent number: 8100142
    Abstract: A bleed solenoid valve that includes a valve main body that is hollow and formed with an input port, an output port, and a discharge port; a flow-changing part that is accommodated inside the valve main body and formed with a first flow path and a second flow path, a valve shaft that is accommodated inside the flow-changing part; and a solenoid part that moves the valve shaft in the axial direction.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: January 24, 2012
    Assignee: Aisin AW Co., Ltd.
    Inventor: Shunpei Sasago
  • Publication number: 20110062254
    Abstract: A control valve for reducing injecting amount variation disposed under a bobbin, disposed to a solenoid valve, may include slots formed to an upper portion of the control valve to contact the bobbin for easily separated from the bobbin.
    Type: Application
    Filed: November 18, 2009
    Publication date: March 17, 2011
    Inventor: Yongsoon PARK
  • Patent number: 7866344
    Abstract: A rotary valve for controlling air supply in an inflatable device comprises a first rotor (11) and the second rotor (12) driven by motor (13) with a drive pulley (14) fixed directly onto its drive spindle (15). A toothed belt (16) driven by the drive pulley (14) engages with the toothed perimeter profile of the first rotor (11), to rotate rotors (11) and (12) relative to a stator (10). As the first and/or second rotor(s) are rotated, channels and ports on the airtight interfaces between the rotors (11, 12) and the stator (10) are connected and disconnected as required by the desired inflation sequence, including all the ports sealed in one position or all the ports exhausting to atmosphere in another position. The valve can be used in conjunction with any type of inflating device, where complex porting or air routing is required, the valve achieving this in a simpler manner.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: January 11, 2011
    Assignee: Huntleigh Technology Limited
    Inventors: Nathan Webster, David Mark Hampson
  • Patent number: 7735516
    Abstract: A lift axle control module is disclosed that is simpler than prior art lift axle control systems, and does not require cycling the input pressure to the regulator. The module includes a housing fluidly connected to a first pressurized air supply and having one chamber with a load bladder port, a second chamber with a lift bladder port, and a common vent port. A pilot pressure is selectively provided for switching the module between the retracted and deployed modes. When the control module is set to the retracted mode, the lift bladders are pressurized to the system pressure, and the load bladders are vented. When the control module is set to the deployed mode, the lift bladders are vented and the load bladders are inflated and maintained at the regulated pressure.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: June 15, 2010
    Assignee: Norgren GT Development Corporation
    Inventor: John M. Morris
  • Patent number: 7686036
    Abstract: The valve apparatus includes: a valve body whose one side is combined with the movable oxygen cylinder, which communicates with a discharge port at the other side thereof along a path from one side thereof lengthily therein, to thus discharge out the oxygen of the oxygen cylinder through the discharge port. An opening which opens outwards from an insertion space provided along the path, and a post valve which is installed at the other side of the valve body and controls discharge of oxygen through the discharge port from the oxygen cylinder according to operation of a lever. A charge adapter whose one side is detachably installed in the opening of the insertion space, which charges oxygen supplied from the outside into the oxygen cylinder when the post valve closes the path, and discharges oxygen of the oxygen cylinder through the discharge port when the post valve opens the path.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: March 30, 2010
    Assignee: Youngdo Ind. Co., Ltd.
    Inventor: Kwang Ho Lee
  • Patent number: 7543603
    Abstract: A tube defines a cavity. Normally-open fitting (2) and normally-closed fitting (3) are respectively fitted into the tube to form ports (34),(35) having seats (40),(13). A body secured to fitting (3) defines a chamber (26) to which port (35) leads. Body (4) defines holes (27),(30) leading into chamber (26). A solenoid assembly (6) is slidable within chamber (26), includes a coil, segregates chamber (26) to chambers (7),(29) which communicate respectively with holes (27),(30) and defines a chamber (16), a seat (18), a seal (14) and an orifice (33) leading between seat (18) and seat (13). A rod-piston assembly includes a rod (37) attached to: assembly (6), sealably passing through body (4) into cavity and preventing gas communication between cavity and chamber (7); and a piston with a seal (39). A magnetic rod (15) slides within chamber (16). Spring (17) urges rod (15) towards seat (18) to seal orifice (33). Spring (12) urges assembly (6) towards seat (13) to seal port (35).
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: June 9, 2009
    Inventors: Wei-Ching Wang, Chia-ping Wang, Yu-ching Wang
  • Patent number: 7484527
    Abstract: The present invention relates to a switching valve device used for vacuum suction of a member such as a semiconductor chip, and the object thereof is to break a vacuum rapidly and smoothly. The switching valve device includes a vacuum suction switching valve function for vacuum suction, a vacuum break switching valve function for vacuum break, and an open-to-atmosphere switching valve function which in conjunction with an operation of the vacuum suction switching valve function, opens a passage to the atmosphere side when the vacuum suction switching valve function is off and closes the passage to the atmosphere side when the vacuum suction switching valve function is on. The vacuum suction switching valve function, the vacuum break switching valve function, and the open-to-atmosphere switching valve function are integrally incorporated into a body portion.
    Type: Grant
    Filed: January 6, 2006
    Date of Patent: February 3, 2009
    Assignee: Kuroda Pneumatics Limited
    Inventors: Shigeo Tamaki, Kosuke Umeda
  • Publication number: 20090014074
    Abstract: The invention concerns a hydraulic valve arrangement (1) having at least two working connections (A, B), a check valve (5, 6) being allocated to each working connection (A, B), and a pressure relief valve (7, 8) being allocated to each check valve (5, 6), each pressure relief valve (7, 8) being connected to a control pressure passage (17, 18). The valve arrangement shall ensure a reliable, pressure-less lowering, also in connection with single-actuated consumers, and further enable a pressure-less float position. For this purpose, the check valves (5, 6) can be opened by means of tappets (20, 21), whose sides facing away from the check valves (5, 6) are ending in a pressure chamber (22), which is connected to the control pressure passage (17, 18) of one of the pressure relief valves (7, 8).
    Type: Application
    Filed: July 9, 2008
    Publication date: January 15, 2009
    Applicant: Sauer-Danfoss Aps
    Inventors: Martin Raadkjaer Joergensen, Ken Petersen
  • Publication number: 20080257430
    Abstract: A proportional valve includes a valve stem movable toward and away from an orifice for alternatively closing and opening the orifice, and regulating fluid flowing out from the orifice while in the open state. A fluidic damping volume is formed between the valve stem and a surface surrounding the orifice. The damping volume, or the fluid present within the damping volume, serves as a damping mechanism for damping or resisting vibrations of the valve stem, thereby stabilizing the fluid flow.
    Type: Application
    Filed: October 16, 2007
    Publication date: October 23, 2008
    Inventor: Ronald Best
  • Publication number: 20080130404
    Abstract: A mixing system and valve(s) are provided for a tank or other container of liquid to be mixed. A directional flow control valve is secured within the tank. The directional flow control valve includes a plate secured adjacent an inlet supply opening or an outlet supply opening in the tank. The valve plate has openings for enabling controlled maximum liquid flow into or out of the inlet supply opening or the outlet supply opening, respectively. A floating disc is also provided within the valve and located in an aligned position to enable sealing engagement of the floating disc over the plate openings when the flow control valve is in a closed position, and to enable movement of the floating disc away from the plate openings when the flow control valve is in an open position. An inlet and outlet supply is also provided to supply liquid into and out of the tank. The directional flow control valve is secured adjacent either an inlet and/or outlet supply and the tank.
    Type: Application
    Filed: November 13, 2007
    Publication date: June 5, 2008
    Inventors: Sami F. Sarrouh, Jose N. Hernandez
  • Patent number: 7308909
    Abstract: A solenoid operated valve includes a fluid inlet and a fluid inlet, a common port, a normally open port and a normally closed port combined on an end cap. The valve further includes a coil housing that houses two coils, a first coil and second coil, that are in parallel with each other creating two parallel longitudinal axes for a normally open assembly and a normally closed assembly. The normally open assembly includes a first diaphragm assembly, a plunger rod having barbed ribs on a proximal end thereof, a magnetic pin and a body that is coupled to a distal end of the plunger rod. The normally closed assembly includes a second diaphragm assembly, a plunger and a magnetic post. The first and second coils are simultaneously actuated.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: December 18, 2007
    Assignee: Kloehn Company, Ltd.
    Inventor: Walter J. Kish, Jr.
  • Patent number: 7150291
    Abstract: Apparatus comprising a normally closed valve element that can be mounted on a mobile part and fluid distributor means that can be mounted on a stationary part and is operatively connectable with said valve element.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: December 19, 2006
    Inventors: Gino Ferrari, Franco Maioli
  • Patent number: 7131368
    Abstract: Disclosed is a variable regeneration valve of a heavy equipment in which hunting due to repeated motion of a spool does not occur in a regeneration valve that supplies a return flow of an actuator to a supply port during single operation of the actuator or its composite operation such as composite driving of arm in and swing, and a structure of the variable regeneration valve is simplified to improve process characteristics. The variable regeneration valve includes a hydraulic pump, an actuator connected with the hydraulic pump, a control valve controlling operation, stop, and direction of the actuator, a regeneration switching valve having a first piston, a switching spool, a first elastic member, and a second piston, a first damping orifice, and a second damping orifice.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: November 7, 2006
    Assignee: Volvo Construction Equipment Holding Sweden AB
    Inventor: Man Suk Jeon
  • Patent number: 7028710
    Abstract: A hydraulic valve system (1) has a supply connection arrangement, having a high-pressure connection (P) and a low-pressure connection, with a working connection arrangement, having two working connections (A, B), with a control valve (3), which is arranged between the supply connection arrangement and the working connection arrangement, and with a non-return valve (24, 28) for each working connection (A, B). The valve being arranged between the control valve (3) and the working connection arrangement. A tappet (36) mechanically opening the valve element (25, 29) of said non-return valve.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: April 18, 2006
    Assignee: Sauer-Danfoss ApS
    Inventor: Martin Raadkjaer Joergensen
  • Patent number: 6997210
    Abstract: A valve arrangement including a release valve. The valve arrangement controls a cylinder assembly including a first port and a second port, and a cylinder slideably housing a piston for movement between an extended position and a retracted position. The valve arrangement includes a valve assembly in fluid communication with the source of fluid pressure and with the first port and the second port to control fluid flow between the source and the first port and second port, and a release valve fluidly connected to the first port and to the second port, the release valve being operable to control flow of fluid from the first port and from the second port. The release valve is movable between a closed position and an open position. Fluid flows from both the first port and the second port simultaneously when the release valve member is in the open position.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: February 14, 2006
    Assignee: Aladdin Engineering & Manufacturing, Inc.
    Inventors: Edward R. Horn, Robert E. Dowd, Thomas J. Thornton
  • Patent number: 6994112
    Abstract: The present invention is a control unit which controls the supply of compressed air to a plurality of inflatable devices for inflating them and for venting air from them in order to deflate them. The unit has valves which are operated by finger operable devices. The valves are arranged in two groups. The first group of valves are disposed between an inlet connected to the source of compressed air and a corresponding number of individual ports which are connected to the inflatable devices. The second group of valves are connected between a venting outlet and the ports or a corresponding number of further ports which are connected to the inflatable devices.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: February 7, 2006
    Assignee: Mangar International Limited
    Inventors: David Edmund Talbot Garman, Simon Christopher Jackson
  • Patent number: 6971725
    Abstract: A valve for controlling an emergency brake system on an aircraft. The valve has separate poppets for controlling the flow of fluid from a supply line to the brake cylinders and from the brake cylinders to a tank return line. The poppets act on each other. A dampening orifice restricts fluid flow around one of the poppets thereby limiting the rate at which that poppet opens and closes. An actuator applies an externally generated control force to the poppets to activate and de-active the emergency brake system.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: December 6, 2005
    Assignee: Eaton Corporation
    Inventor: Robert Edward Holder
  • Patent number: 6918902
    Abstract: The in-line hand operated valve controls the flow of at least the irrigation fluid or suction to a surgical site. First and second sources provide fluid and suction to the valve. Valve body source ports communicate with the source lines and a delivery port communicates with a delivery line. The valve includes collapsible internal fluid carrying channels linking these ports. Each valve mechanism includes an operator control surface, a stem, and a compressor member acting on and closing and opening the collapsible channels. A biasing element keeps the stem and compressor either open or closed. A two position interlocking mechanical switch, coupled to the stem, is extended in the ON valve position and withdrawn in the OFF position. The method of providing a valve control utilizes these shape and click open and click close systems.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: July 19, 2005
    Assignee: ConMed Corp.
    Inventors: C. Kenneth French, Garrett L. Barker, Stephen Chakoff, Melvin E. Levinson
  • Patent number: 6904938
    Abstract: There is disclosed a stop block for controlling a hydraulic consumer in which a main piston having an advanced opening can be lifted off a valve seat in a return function by means of a push piston. A pressure chamber confined by the main piston on the one hand and by the control piston on the other hand is connected to a tank or low-pressure passage both in the return function and in the non-return function of the stop block so that the change-over from the return function to the non-return function and vice versa can be effected very quickly.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: June 14, 2005
    Assignee: Bosch Rexroth AG
    Inventor: Burkhard Knoell
  • Patent number: 6868772
    Abstract: A control valve is provided which may be incorporated within a fluid operating system. The valve has an internally-mounted check element which allows the valve to provide a fail-safe mode for a downstream device in fluid communication with the control valve. The invention includes the control valve, the valve in combination with a downstream device, and a method whereby the flow of pressurized fluid is controlled by operation of the control valve.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: March 22, 2005
    Assignee: IMI Norgren, Inc.
    Inventors: Steven L. Rice, Vincent J. Mastrobuono, Timothy F. O'Brien
  • Patent number: 6848473
    Abstract: An insert or cartridge that fits into a cavity in a valve body provides a check valve function and an anti-cavitation function and a pressure relief function. This insert is substantially circular and has an internal cavity with a valve assembly that has two pairs of valve seats, one pair of valve seats providing the anti-cavitation function and the other pair of valve seats providing the pressure relief function. The outside of the insert itself engages with a sealing surface in the cavity in the valve body to provide the check valve function.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: February 1, 2005
    Assignee: CNH America LLC
    Inventors: George T. Fiala, David W. Swaim