Fluid Motor Patents (Class 137/596.18)
  • Patent number: 10429865
    Abstract: A temperature control apparatus is provided, which is capable of, even when it is necessary to perform control by means of valves in a plurality of channels, promptly controlling a temperature of an area to be temperature-controlled promptly to a desired temperature. Passage and blockage of a heating medium passing through a first supply channel to a mixing channel, a temperature of the heating medium being controlled by a first temperature regulating unit at a predetermined temperature, and passage and blockage of a heating medium passing through a second supply channel to the mixing channel, a temperature of the heating medium being controlled by a second temperature regulating unit, are controlled by a valve unit. The valve unit includes a first spool valve and a second spool valve, which are coupled through a heat insulating layer.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: October 1, 2019
    Assignee: Shinwa Controls Co., Ltd.
    Inventor: Shigehiko Ono
  • Patent number: 10308280
    Abstract: Hydraulic steering (1) is disclosed comprising a high pressure port (P), a low pressure port (T), two working ports (CL, CR), a manual steering section (3), and a steering valve section having a steering valve 5 and a hydraulic driving arrangement (6) adjusting hydraulically a position of said steering valve. A change from automatic steering to manual steering should be reliably ensured when the manual steering section is directly influenced by a driver. To this end, a switching valve (11) is provided, which is actuatable between a first position in which said driving arrangement (6) is supplied with hydraulic fluid under pressure, and a second position in which a supply of hydraulic fluid to said driving arrangement (6) is interrupted, wherein said switching valve (11) is hydraulically actuated into said second position by a pressure generated upon actuating of said manual steering section (3).
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: June 4, 2019
    Assignee: Danfoss Power Solutions ApS
    Inventors: Morten Hoeck Petersen, Thomas Træger Hansen, Thomas Bauer, Niels Bjarne Hansen, Jeroen Hinse
  • Patent number: 10287842
    Abstract: Disclosed here are systems and methods for modular blowout preventer (BOP) control. A modular BOP control unit system of one embodiment includes a group of modular control units mounted on a skid. The modular control units can include a main control unit module for an annular BOP, a diverter valve module for a diverter, and a BOP valve module for one or more ram BOPs. In some instances, the modular control units are received in pockets of the skid. Additional systems, devices, and methods are also disclosed.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: May 14, 2019
    Assignee: Cameron International Corporation
    Inventors: Konstantin Bieneman, Cedric Morin, Wei Kwan Toh, Yee Kang Tam
  • Patent number: 10281055
    Abstract: A servo valve including a piezo-electric actuator, a flexible linkage, and control valves. The piezo-electric actuator is actuatable along a piezo stack axis. The flexible linkage is coupled to the piezo-electric actuator at opposite axial ends of the actuator. Control valves are disposed at laterally opposite sides of the piezo stack axis and include respective valve stems coupled to the flexible linkage. The flexible linkage may be configured to transfer motion of the piezo-electric actuator along the piezo stack axis to a motion of the valve stems along an amplification axis that is transverse to the piezo stack axis to open and close the control valves.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: May 7, 2019
    Assignee: Parker-Hannifin Corporation
    Inventors: Anuj Chaudhary, Daniel Christopher Massie
  • Patent number: 10113540
    Abstract: A linear compressor includes an inner back iron positioned in a driving coil. A flex mount is positioned within the inner back iron and is coupled to the inner back iron. A coupling extends between the flex mount and a piston, and a compliant bellows is coupled to the flex mount and the piston.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: October 30, 2018
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Thomas Robert Barito, Gregory William Hahn
  • Patent number: 9868197
    Abstract: The present invention relates to a valve for a hydraulically operated percussion mechanism having a main valve (2, 102) which is in the form of a rotary slide valve having a rotary slide. In order to reduce the installation space and the production costs of such valves, it is proposed according to the invention that the rotary slide is configured as a receiving housing which receives a valve element in the form of a secondary valve (68, 114). Furthermore, the invention relates to the use of a valve which is arranged on a percussion mechanism of a hydraulic hammer.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: January 16, 2018
    Assignee: CONSTRUCTION TOOLS GMBH
    Inventor: Colin Dirr
  • Patent number: 9797116
    Abstract: A system and process of controlling a hydraulic system in a work machine includes determining if an operation of the hydraulic system of the work machine meets a predetermined criteria with a controller, and operating a drain valve of the hydraulic system such that there is a minimum flow from a hydraulic pump to a drain if the operation of the hydraulic system of the work machine does not meet the predetermined criteria via the controller. The system and process further operating the drain valve of the hydraulic system such that there is a limited flow from the hydraulic pump to the drain if the operation of the hydraulic system of the work machine meets the predetermined criteria via the controller such that the predetermined criteria comprises at least a predetermined time period T since the work implement system of the work machine has been operated.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: October 24, 2017
    Assignee: Caterpillar Inc.
    Inventor: Rustin Metzger
  • Patent number: 9534734
    Abstract: An apparatus for the controlled pressurization of gas cylinder actuators connected to a single gas filling line, comprising elements for controlling and recovering a pressurized gas flow originating from pressurized gas supply elements and directed to a gas filling line, at least one sensor for detecting the pressure of the gas that is present in the gas filling line which is adapted to carry pressurized gas to at least one gas cylinder actuator connected thereto, electrically controlled valve elements adapted to allow/interrupt the flow of pressurized gas in the gas filling line, an electronic control and management unit connected to the at least one pressure sensor and to the electrically controlled valve elements to automate the opening/closing of the valve elements in dependence on the signals that arrive from the at least one pressure sensor.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: January 3, 2017
    Assignee: SPECIAL SPRINGS S.R.L.
    Inventors: Augusto Cappeller, Alessandro Cappeller, Dante Cappeller
  • Patent number: 9279433
    Abstract: A poppet valve assembly to control a pneumatic actuator may include a housing having a central bore. A first module may be disposed within the central bore, and the first module may have a first and second poppet valve. A second module may also be disposed within the central bore, and the second module may have a third and fourth poppet valve. A supply of pressurized fluid may be in fluid communication with a plurality of control valves such that pressurized fluid from the control valves opens and closes the poppet valves. The supply of pressurized fluid may also be in fluid communication with the first module and the second module such that the opening and closing of the poppet valves controls the position of the pneumatic actuator.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: March 8, 2016
    Assignee: General Equipment and Manufacturing Company, Inc.
    Inventor: Bruce R. Penning
  • Patent number: 8960217
    Abstract: A spool is provided with a first discharge air duct connecting the first opening to the first discharge air chamber, and a second discharge air duct connecting the second opening to the second discharge air chamber, where the first discharge air duct and the second discharge air duct are divided by a non-duct part. A first output air pressure chamber is adjacent to a first discharge air chamber with a first diaphragm interposed therebetween, the first discharge air chamber is adjacent to a bias chamber with a second diaphragm interposed therebetween, the bias chamber is adjacent to an input air pressure chamber with a third diaphragm interposed therebetween, the input air pressure chamber is adjacent to a second discharge air chamber with a fourth diaphragm interposed therebetween, and the second discharge air chamber is adjacent to a second output air pressure chamber with a fifth diaphragm interposed therebetween.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: February 24, 2015
    Assignee: Azbil Corporation
    Inventor: Yohsuke Inagaki
  • Patent number: 8925587
    Abstract: Embodiments of the invention provide a first piston with a smaller diameter and a second piston with a larger diameter that switch a spool between a first switching position at one end and a second switching position at the other end, and a return spring that moves the spool to a neutral switching position are provided, at the neutral switching position, some of a plurality of ports communicate with one another and remaining ports are closed; at the first switching position, the communication-and-closure relationship of the plurality of ports is the reverse of that in the neutral switching position; and at the second switching position, all the plurality of ports are closed, and when the spool is switched to the neutral switching position and the first switching position, only the first piston is operated, and when the spool is switched to the second switching position, the second piston is operated.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: January 6, 2015
    Assignee: SMC Corporation
    Inventors: Shinji Miyazoe, Katsuyuki Senba
  • 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: 8869831
    Abstract: A traction valve is provided for use in combination with a relay valve. The traction valve includes a body configured for connection to a housing of the relay valve and defining inlet, outlet and traction supply ports. A first fluid control valve used for traction control is supported on the body and includes a valve member that alternately permits and prevents fluid communication between the traction supply and outlet ports in the body. The body and the first fluid control valve are configured to receive any of a plurality of interchangeable second fluid control valves between the inlet port in the body and the first fluid control valve. Each of the plurality of interchangeable second fluid control valves is configured to perform a different function such that the traction valve assumes different configurations upon assembly of the various second fluid control valves with the body and the first fluid control valve.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: October 28, 2014
    Assignee: Bendix Commercial Vehicle Systems LLC
    Inventors: Craig S. Haehn, Chris J. Polmear, Charles E. Ross
  • Publication number: 20140216580
    Abstract: The invention concerns a hydraulic steering (1) comprising a supply connection arrangement, a steering motor (2), a high pressure supply (P), and a steering unit (3) arranged between the supply connection arrangement (S) and the steering motor (2), the supply connection arrangement comprising a steering valve (9), and a valve arrangement (27). The task of the hydraulic steering is to improve the safety and faults detection over the state of the art. For this purpose, the steering valve (9) is only deflectable if the valve arrangement (27) is deflected.
    Type: Application
    Filed: January 15, 2014
    Publication date: August 7, 2014
    Inventors: Thomas Bauer, Niels Bjarne Hansen, Morten Hoeck Petersen
  • Publication number: 20140190719
    Abstract: A double-valve mechanism and a pneumatic tool including the same are provided. The double-valve mechanism is mounted in a main body of the pneumatic tool. The main body has an exhausting passage and an outlet passage communicating therewith, and an entrance passage and an inlet passage communicating therewith. The double-valve mechanism is operable from outside of the main body to move relative to the main body so as to selectively seal an entry of the inlet passage and an exit of the outlet passage. Whereby, the stop of the tool is effectively ensured after the double-valve mechanism is closed, no gas leakage will occurs, the waste of pressurized air energy and defects of the tool will be avoided, and the rotation of the rotor can be quickly stopped.
    Type: Application
    Filed: January 4, 2013
    Publication date: July 10, 2014
    Applicant: HYPHONE MACHINE INDUSTRY CO., LTD.
    Inventors: Chih-Ming TING, Tien LIN, Po-Jen LAI
  • Publication number: 20140174071
    Abstract: The present invention relates to a hydraulic control system for construction machinery capable of variably adjusting a set pressure of a relief valve, which controls a set pressure of a hydraulic system, according to a value inputted by means of pressure in the hydraulic system or the manipulation of a joystick.
    Type: Application
    Filed: August 9, 2011
    Publication date: June 26, 2014
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventor: Chun-Han Lee
  • Patent number: 8714196
    Abstract: A valve manifold includes a valve body carrying pairs of laterally spaced piston actuated valves controlled by control modules operative to selectively pressurize and exhaust an outlet port connected to a fluid device and configured in groupings permitting varying valve functionalities.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: May 6, 2014
    Inventors: John Leslie Johnson, James G. Johnson
  • Patent number: 8631820
    Abstract: It is addressed to provide a hydraulic control valve for preventing high-speed rotation of a valve body of a check valve incorporated in the hydraulic control valve of a type that pressure oil is supplied from a tandem, path and a parallel path via the check valve. A check valve unit is constituted by a main unit and a valve body of a first check valve. A throttle is provided on a right side of an O-ring groove. On a main unit side, there is formed a cylindrical housing portion in which a threaded portion is formed on an outer peripheral portion for fixation to a casing of the hydraulic control valve. On an inner peripheral surface of the housing portion, a groove is formed in an axial direction. Meanwhile, the valve body of the first check valve has a rib. At a time of assembly, the rib, is inserted into the groove of the main unit as indicated by an arrow.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: January 21, 2014
    Assignee: Toshiba Kikai Kabushiki Kaisha
    Inventors: Masayuki Kobayashi, Toshihide Shimozono
  • Patent number: 8613292
    Abstract: To provide a decompression switching valve that enables reduction in the running cost and initial cost, by saving of air consumption and simplifying and downsizing of equipment. A decompression switching valve includes one valve hole, a main valve body having air supply ports, a first output port, a second output port, and an air exhaust port which are communicated with the valve hole, and a first spool and a second spool which are slidably provided in the valve hole, adjacent to each other, wherein the first spool forms a switching valve section that selectively connects the first output port to an air supply port or the air exhaust port, and wherein the second spool forms a decompression valve section that reduces the pressure of compressed air having been input from the air supply port and outputs the pressure from the second output port.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: December 24, 2013
    Assignee: SMC Corporation
    Inventors: Shinji Miyazoe, Katsuyuki Senba
  • Patent number: 8528583
    Abstract: A pneumatic amplifier is provided comprising a supply air valve with a supply input connected to a pneumatic supply, a signal input for receiving a pneumatic input signal, a signal output for transmitting an amplified pneumatic output signal, a valve member for continuously opening or cutting off a pneumatic connection between the pneumatic supply and the signal output, and a diaphragm coupled with the valve member exposed at one side to the pneumatic input signal and having an opposite side. An exhaust air valve is provided with a bleed output, and a valve member for opening or cutting off a pneumatic connection between the signal output of the supply air valve and the bleed output. The valve members of the supply air valve and the exhaust air valve are structurally separated. The opposite side of the supply air valve diaphragm is exposed to the amplified pneumatic output signal.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: September 10, 2013
    Assignee: Samson Aktiengesellschaft
    Inventor: Stefan Kolbenschlag
  • 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: 8485223
    Abstract: A hydraulic control valve is provided, which can prevent the occurrence of overload by relieving hydraulic fluid of a return line in which the overload occurs due to an inertial force of a rotator when a hydraulic motor that is operated by the hydraulic fluid supplied from a hydraulic pump stops halfway.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: July 16, 2013
    Assignee: Volvo Construction Equipment Holding Sweden AB
    Inventor: Bon Seuk Ku
  • Patent number: 8464753
    Abstract: A valve system for activating a piston of a piston-cylinder arrangement for a hydraulic or fluid device includes a pilot control valve including 3/2-way valve and a main valve arrangement having a first and a second main valve. The first and second main valves include 2/2-way valves, wherein in a first position the pilot-control valve is configured to move the first main valve into an open position so as to direct a path for a high pressure fluid to a space above the piston, and wherein in a second position the pilot-control valve is configured to connect the space to a low-pressure tank so as to relieve a pressure in the space above the piston via the second main valve, and wherein the pilot-control valve is configured to open the second main valve and configured to close the first main valve.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: June 18, 2013
    Assignee: ABB Technology AG
    Inventors: Matthias Schmidt, Niels Wahlefeld, Franz-Josef Koerber
  • Patent number: 8408232
    Abstract: A sequence valve for a hydraulic circuit provides a control signal through a control signal port to a pressure responsive flow source to maintain pressure in an accumulator between a low pressure setting and a high pressure setting. The valve includes accumulator, flow source and drain ports, in addition to the control signal port. A spool controls communication between the control signal port and the drain port. A piston is moved by pressure in the accumulator port against a control spring to close communication between the control signal port and the flow source port, and to move the valve spool to close communication between control signal port and the drain port. A differential between the net cross sectional area of the spool establishes the differential between the high and low pressure settings of the accumulator.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: April 2, 2013
    Assignee: Parker Hannifin Corporation
    Inventors: Eric Ray Schisler, J. Eric Haggard
  • Patent number: 8408328
    Abstract: A hydraulic control system includes a first motor, a second motor, a pump operatively associated with the first motor, a first coupling valve operatively associated with the second motor, first parallel valves operatively associated with the second motor, and a first switching valve operatively associated with the first coupling valve and the first parallel valves. The first switching valve is configured to switch the first coupling valve between a first coupling state and a second coupling state opposite the first coupling state and to switch the first parallel valves between a first parallel state and a second parallel state opposite the first parallel state. While the first parallel valves are in the first parallel state a portion of the output of the first motor drives the second motor while the first parallel valves are in the second parallel state, the output of the pump drives the second motor.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: April 2, 2013
    Assignee: Longyear TM, Inc.
    Inventors: Stefan Wrede, Christof Kruse
  • Patent number: 8375989
    Abstract: A method of operating a control valve assembly for a hydraulic system includes detecting the current operation of a first position sensor and a second position sensor to determine if at least one of the first position sensor and the second position sensor is inoperable. A pressure of the fluid at a first work port and a second work port is measured, and one of a first valve and a second valve is actuated when one of the first position sensor and the second position sensor is determined to be inoperable. The first valve is actuated based upon the fluid pressure measured at the second work port to adjust the flow of the fluid through the first work port. The second valve is actuated based upon the fluid pressure measured at the first work port to adjust the flow of the fluid through the second work port.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: February 19, 2013
    Assignee: Eaton Corporation
    Inventor: Chris W. Schottler
  • Patent number: 8333218
    Abstract: A proportional pressure controller includes a body having inlet, outlet, and exhaust ports. A fill valve communicates with pressurized fluid in the inlet port. A dump valve communicates with pressurized fluid from the fill valve. An inlet poppet valve opens by pressurized fluid through the fill valve. An exhaust poppet valve when closed isolates pressurized fluid from the exhaust port. An outlet flow passage communicates with pressurized fluid when the inlet poppet valve is open, and communicates with the outlet port and an exhaust/outlet common passage. A fill inlet communicates between the inlet passage and fill valve, and is isolated from the outlet flow passage, exhaust/outlet common passage, and outlet and exhaust ports in all operating conditions of the controller.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: December 18, 2012
    Assignee: MAC Valves, Inc.
    Inventors: Timothy F. Walsh, Kevin C. Williams
  • 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: 8256850
    Abstract: Pivotally mounted doors forming the floor of a railroad car are prevented from opening inadvertently through not allowing fluid pressure to be applied to a door opening piston until the fluid pressure exceeds a predetermined amount. A control valve can control the position of a spool.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: September 4, 2012
    Assignee: Lexair, Inc.
    Inventor: Theodore P. O'Canna
  • Patent number: 8172002
    Abstract: A hydraulic control system includes a first motor, a second motor, a pump operatively associated with the first motor, a first coupling valve operatively associated with the second motor, first parallel valves operatively associated with the second motor, and a first switching valve operatively associated with the first coupling valve and the first parallel valves. The first switching valve is configured to switch the first coupling valve between a first coupling state and a second coupling state opposite the first coupling state and to switch the first parallel valves between a first parallel state and a second parallel state opposite the first parallel state. While the first parallel valves are in the first parallel state a portion of the output of the first motor drives the second motor while the first parallel valves are in the second parallel state, the output of the pump drives the second motor.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: May 8, 2012
    Assignee: Longyear TM, Inc.
    Inventors: Stefan Wrede, Christof Kruse
  • Patent number: 8118113
    Abstract: A hydraulic control system includes a first motor, a second motor, a pump operatively associated with the first motor, a first coupling valve operatively associated with the second motor, first parallel valves operatively associated with the second motor, and a first switching valve operatively associated with the first coupling valve and the first parallel valves. The first switching valve is configured to switch the first coupling valve between a first coupling state and a second coupling state opposite the first coupling state and to switch the first parallel valves between a first parallel state and a second parallel state opposite the first parallel state. While the first parallel valves are in the first parallel state a portion of the output of the first motor drives the second motor while the first parallel valves are in the second parallel state, the output of the pump drives the second motor.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: February 21, 2012
    Assignee: Longyear TM, Inc.
    Inventors: Stefan Wrede, Chrisof Kruse
  • Patent number: 8061384
    Abstract: In a pressure controller, a drive piston and pressure control valve are freely movably supported in a housing, the drive piston is supported by being energized and the pressure control valve is supported by being energized to make a pressure chamber and a decompression chamber communicatively connectible, the drive piston and the pressure control valve are moved by an electromagnetic force of a solenoid via a ring piston to make a hyperbaric chamber and the pressure chamber communicatively connectible and also an external piston is freely movably provided facing the drive piston and by making a control pressure acting on the external piston from a rear pressure chamber on a drive piston side equal to or greater than an external pressure acting from outside from an input unit, pressure control can properly be performed by readily moving a drive valve by pressure from outside when a power supply is defective.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: November 22, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hiroshi Isono
  • Patent number: 8038231
    Abstract: Pivotally mounted doors forming the floor of a railroad car are prevented from opening inadvertently through not allowing fluid pressure to be applied to a door opening piston until the fluid pressure exceeds a predetermined amount. A control valve can control the position of a spool.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: October 18, 2011
    Assignee: Lexair, Inc.
    Inventor: Theodore P. O'Canna
  • Patent number: 7784492
    Abstract: In a direction control valve, a bottom face of an insertion hole of a first movable member is at a predetermined distance from a second movable member with respect to a first axial direction when communication between a first communication switching port and a communication object port is made and communication between a second communication switching port and the communication object port is broken. The bottom face contacts and pushes the second movable member in a second axial direction opposite to the first axial direction after the first movable member moves in the second axial direction by the predetermined distance while the first and second movable members move in the second axial direction to switch a port communicating with the communication object port from the first communication switching port to the second communication switching port.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: August 31, 2010
    Assignees: Denso Corporation, Nippon Soken, Inc.
    Inventors: Yoshihisa Yamamoto, Hirokuni Tomita, Yoshihiro Hotta, Yoshifumi Wakisaka, Kiyomi Kawamura
  • Patent number: 7779863
    Abstract: The present invention describes, generally, a method and system for controlling the dynamics of an actuatable load functioning or operable within a servo or servo-type system, wherein the dynamics of the load are controlled by way of a unique asymmetric pressure control valve configured to provide intrinsic pressure regulation. The asymmetric pressure control valve, which may be referred to as a dynamic pressure regulator because of its capabilities, utilizes different sized free floating spools that are physically independent of one another and freely supported in interior cavities of respective corresponding different sized valving components that make up the valve body to regulate the pressures acting within the overall system between the control or pilot pressure and the load or load pressure.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: August 24, 2010
    Assignee: Raytheon Sarcos, LLC
    Inventors: Stephen C. Jacobsen, Shane Olsen, Michael Morrison
  • Patent number: 7753072
    Abstract: A valve assembly may include a main housing and first and second electro-statically actuated valves. The main housing may define at least three chambers, with a first chamber configured to be coupled to a high pressure supply port, a second chamber configured to be coupled to an output port, and a third chamber configured to be coupled to a low pressure exhaust port. The first electro-statically actuated valve may be provided between the first and second chambers, and the first electro-statically actuated valve may allow or substantially block fluid communication between the first chamber and the second chamber responsive to a first electrical signal. The second electro-statically actuated valve may be provided between the second and third chambers, and the second electro-statically actuated valve may allow or substantially block fluid communication between the second chamber and the third chamber responsive to a second electrical signal. Related methods are also discussed.
    Type: Grant
    Filed: July 22, 2005
    Date of Patent: July 13, 2010
    Assignee: AFA Controls LLC
    Inventors: Kevin R. Douglas, William O. Teach, Paul W. Gibson, Donald C. Harris, Scott H. Goodwin, David E. Dausch, Wayne D. Dettloff
  • Publication number: 20100163128
    Abstract: A hydraulic directional valve having an electromagnetic actuating unit and a valve section, an essentially cylindrical, blind hole-like receptacle being formed on one component of the actuating unit, a flange section of a valve housing of the valve section engaging in the receptacle, the flange section being provided with an angular groove which extends in a circumferential direction, and an essentially hollow cylindrical wall of the receptacle in the region of the annular groove engaging in said annular groove in such a way that it bears on the groove base of the annular groove, along the entire circumference of said annular groove. The torsional rigidity between the flange section and the wall is increased. In this context, particular emphasis is placed on processing reliability and economic viability of the connecting process.
    Type: Application
    Filed: August 4, 2006
    Publication date: July 1, 2010
    Applicant: SCHAEFFLER KG
    Inventors: Markus Kinscher, Jens Hoppe
  • Patent number: 7607454
    Abstract: A composite valve includes a main valve unit that individually opens and closes a vacuum channel for applying vacuum pressure to a load and a pressure channel for supplying vacuum-breaking pressure fluid with two valves for vacuuming and pressurizing; a channel combining section that connects the vacuum channel and the pressure channel to the load via a combining port; and a pilot valve unit that opens and closes the valve members individually with two pilot valves. The main valve unit, the channel combining section, and the pilot valve unit have the same width, and connect to one another in line along the axis of the valve.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: October 27, 2009
    Assignee: SMC Corporation
    Inventors: Shinji Miyazoe, Takumi Matsumoto
  • Patent number: 7490625
    Abstract: A valve manifold includes a valve body carrying pairs of laterally spaced piston actuated valves controlled by control modules operative to selective pressurize and exhaust an outlet port connected to a fluidic device and configured in grouping permitting varying valve functionalities.
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: February 17, 2009
    Inventors: John Leslie Johnson, James G. Johnson
  • Patent number: 7438086
    Abstract: A control valve apparatus couples pressurized fluid to first and second actuators using first and second double valves. The first double valve includes first and second crossover passages and first and second pilots. The second double valve includes third and fourth crossover passages and third and fourth pilots. A first interconnection couples the first crossover passage with the third pilot fluid inlet. A second interconnection couples the second crossover passage with the fourth pilot fluid inlet. A third interconnection couples the third crossover passage with the first pilot fluid inlet. A fourth interconnection couples the fourth crossover passage with the second pilot fluid inlet. Thus, operation of each pilot depends upon receiving pressurized fluid from the other double valve which is only present when the other double valve is not in a fault condition.
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: October 21, 2008
    Assignee: Ross Controls
    Inventors: Jose Carlos Bento, Neil E. Russell, Joseph E. Foster, Detlef Zimmerling
  • Patent number: 7415989
    Abstract: A check valve system controls the flow of fluid between a spool valve and a hydraulic actuator and includes a pilot operated check valve that is controlled by a lock-out valve. The check valve has a poppet that engages and disengages a first valve seat in response to a pressure in a control chamber. The lock-out valve has an inlet connected to the control chamber, an outlet connected to an opening in the bore of the spool valve, and an second valve seat between the inlet and the outlet. A valve member that selectively engages and disengages the second valve seat and spool of the spool valve applies force to the valve member which responds by moving into engagement with the second valve seat. Thus in one position, the spool valve maintains the lock-out valve closed which traps pressure in the control chamber which tend to keep the check valve closed.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: August 26, 2008
    Assignee: HUSCO International, Inc.
    Inventor: Dennis R. Barber
  • Patent number: 7270046
    Abstract: A distributed hydraulic system locates a control assembly, that has electrohydraulic valves and a electronic controller, adjacent the respective hydraulically powered actuator controlled by that assembly. The control assembly includes a manifold block with ports to that the pump, tank return and actuator fluid conduits connect. One or more pressure ports are provided on the manifold block at which to sense pressure at different locations therein. A controller housing, in addition to containing an electronic function controller, also contains a separate pressure sensor for each pressure port, and is mounted against the manifold block so that each pressure sensor connects to a pressure port. The manifold block also has a pair of exterior walls that extend on opposites sides of the controller housing to protect the electronic controller. Other features that facilitate distributing the hydraulic control adjacent the actuators are provided.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: September 18, 2007
    Assignee: HUSCO International, Inc.
    Inventors: Dwight B. Stephenson, Michael J. Paik, Peter A. Jahnke
  • Patent number: 7213612
    Abstract: A control valve for operating a fluid-actuated device includes a fluid inlet, a fluid outlet and a passage in fluid communication between the fluid inlet and the fluid outlet, the passage defining a longitudinal axis. A valve seat is disposed in the passage and includes an upstream diameter and a downstream diameter, the downstream diameter smaller than the upstream diameter. A ball poppet is positionable in a seated line contact position with the valve seat. The valve seat has a valve seat angle relative to a centerline of the longitudinal axis that is greater than an angle formed by the centerline and a line tangent to the ball poppet at the seated line contact position.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: May 8, 2007
    Assignee: Ross Operating Valve Company
    Inventor: Charles A. Weiler, 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: 7044431
    Abstract: The invention relates to a valve system comprising a housing, an actuator, a main valve disposed between an inlet chamber and an outlet chamber, and a pilot chamber. Said pilot chamber is linked with the outlet chamber via a main valve, comprising at least one pilot valve member and one valve body linked with the electromagnetic actuator, and with the inlet chamber via at least one connecting channel. The invention is characterized in that the stationary seat of the main valve is formed by an insert that is mounted in the; housing of the valve system. The main valve member is impinged upon on its diametrically opposed surfaces by the pressure present in the inlet chamber and the pressure present in the pilot chamber. The pilot chamber is linked with the inlet chamber via a connecting channel that extends through the main valve member. The pilot valve member is formed by the insert mounted in the housing of the valve system or by the housing.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: May 16, 2006
    Assignee: Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbH
    Inventor: Werner Stumpe
  • Patent number: 6988513
    Abstract: A multistage proportional valve for controlling the pressure of a fluid inside a container includes a fluid outflow passageway having an exhaust opening, an actuatable fluid inflow passageway having an intake opening and an actuatable exhaust cover for selectively closing said exhaust opening. The fluid outflow passageway, actuatable fluid inflow passageway and actuatable exhaust cover are interconnected and configured such that in response to an actuating force reaching a first pre-determined threshold the valve displaces the exhaust cover to allow the fluid inside the container to exhaust there from through the fluid outflow passageway. In response to the actuating force reaching a second pre-determined threshold the valve displaces the fluid inflow passageway to allow pressurized fluid to flow there through inside the container.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: January 24, 2006
    Assignee: Delaney Machinerie Inc.
    Inventors: Francois Delaney, Roman Teliszczuk
  • Patent number: 6688332
    Abstract: A multiway valve for controlling a flow of fluid under pressure, includes a valve housing having fluid ports and a plurality of bores in side-by-side parallel disposition substantially at a same level. Each bore is configured for accommodation of a valve spools which are sealed in the bores against the valve housing. The spools have opposite first and second end faces, and include portions of greater diameter and portions of smaller diameter. Acting on the first end face of the spools is an actuation unit for moving the spools in a longitudinal direction to thereby direct a flow of fluid under pressure between the ports, whereas a mechanical coupling mechanism, which is secured to the valve housing, interacts with the second end faces of the spools.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: February 10, 2004
    Assignee: Rexroth Mecman GmbH
    Inventor: Thomas Liesenhoff
  • Patent number: 6612335
    Abstract: A 3-way hydraulic valve comprising a body formed with an inlet port for connecting to a pressurized supply line, a first outlet port for connecting to an outlet line and being in flow communication with the inlet port, a gate intermediate the inlet port and the first outlet port, dividing the body into an inlet chamber and an outlet chamber, the body further comprises a second outlet extending from the outlet chamber, and a control chamber fitted with a deformable diaphragm sealingly engageable with the gate so as to prevent flow between the inlet port and the first outlet port, and a sealing port associated with the second outlet and comprising a sealing member linearly displaceable between a closed and an open position.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: September 2, 2003
    Assignee: Arkal Filtration Systems C.S. Ltd.
    Inventors: Igal Assa, Ra'anan Ben-Horin
  • Patent number: 6591868
    Abstract: The invention pertains to a hygienic vacuum valve for use in sterile environments such as food processing, medical and pharmaceutical applications where a vacuum valve is advantageously utilized in situ on processing equipment to eliminate multiple vacuum lines and valves remotely located from the processing equipment. The novel evacuation valve and method for evacuating, providing a sterilized environment and then sealing the package is accomplished by utilizing a vacuum valve having a housing which accommodates a first piston for opening and closing a vacuum inlet ported to a vacuum outlet and a second piston disposed between the housing and the vacuum outlet for rapidly releasing the vacuum after the package has been sealed. The first and second pistons each preferably include a sealing head which seats in a tapered frusto-conical shaped seat for positively sealing the vacuum inlet and the vent port in the operation of the valve.
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: July 15, 2003
    Inventor: Ramon Munoz Navarro