Unitary Piston And Valve Patents (Class 251/63)
  • Patent number: 10421331
    Abstract: The invention proposes a method of supplying with hydraulic fluid a hydraulic motor (2) of a drive wheel supporting a vehicle by means of a cylinder-type suspension system (1). The hydraulic fluid passes through a feed duct (25) extending longitudinally through a cylinder (3) of the cylinder-type suspension system (1). The invention also relates to the use thereof in order to eliminate the need for hoses.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: September 24, 2019
    Inventor: Laurent Eugène Albert
  • Patent number: 10286140
    Abstract: A centrifuge apparatus for separating blood components includes a centrifuge tube and a flow dividing mechanism, and the flow dividing mechanism is fixed at the bottom of the centrifuge tube. Moreover, the bottom of the centrifuge tube is further provided with a discharge hole. The flow dividing mechanism includes an adjustable flow divider valve and a flow guiding channel, and the adjustable flow divider valve is configured to adjust relative positions of the flow guiding channel and the discharge hole, thereby implementing flow division of blood components at the bottom layer of the centrifuge tube. The centrifuge apparatus can be used to manufacture platelet-rich plasma in a convenient and simple way, and can improve the clinical operation efficiency. Moreover, the centrifuge apparatus may completely avoid the possibility of introducing pollution into a sample during the manufacturing, thereby improving the preciseness and stability of manufacturing the platelet-rich plasma.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: May 14, 2019
    Assignee: SHANGHAI JIAO TONG UNIVERSITY AFFILATED SIXTH PEOPLE'S HOSPITAL
    Inventors: Changqing Zhang, Ting Yuan
  • Patent number: 10145481
    Abstract: Provided is a pneumatic valve in which a seal member; a shaft provided with a valve body capable of abutting against the seal member; and a valve-actuating pressure chamber that moves the shaft in an axial direction to actuate the valve body is provided within a valve casing. The shaft has a first member that receives pressure from the valve-actuating pressure chamber, and a second member that includes the valve body and is movable relative to the first member in the axial direction. The pneumatic valve further has a stopper that is provided in a movement path of the first member, and a disc spring that is sandwiched between the first member and the second member, has elastic energy accumulated therein in a state where the first member is in contact with the stopper, and presses the valve body against the seal member.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: December 4, 2018
    Assignee: IHI Corporation
    Inventors: Kohei Taya, Hatsuo Mori
  • Patent number: 10086118
    Abstract: A method and apparatus for injecting saline into an open cavity of a patient's body, and, alternatively, vacuuming fluids from said cavity, during laparoscopic surgery that provides constant feed and amplified pressure to provide a steady fluid output, in a disposable, single use handheld surgical device. The apparatus has a pump portion that includes a vacuum powered pump motor with a spring-biased valve.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: October 2, 2018
    Assignee: Mectra Labs, Inc.
    Inventors: Thomas P. Clement, S. Stone Linton
  • Patent number: 9885392
    Abstract: A shut-off valve for shutting-off a supply at will, wherein the shut-off valve comprises an axially movable valve slide, provided with a transverse valve flange for cooperation with a fixed valve seat, the slide being aetuatable in a closing direction by spring force and in an opening direction by a hydraulically operated ball, having an actuation end position in a sealing ball seat.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: February 6, 2018
    Assignee: BorgWarner Torq Transfer Systems AB
    Inventor: Bo Lundstrom
  • Patent number: 9827641
    Abstract: A low pressure shut off for a pneumatic tool. The tool may include an air path for input air. A shaft may be positioned along the air path and movable relative to the air path between a first position and a second position. First and second pistons may be spaced axially apart along the shaft and each may extend radially outward beyond the shaft. In the first position, the first piston may extend across the air path to block the air path. In the second position, the second piston may be positioned to be acted on by air from a secondary inlet to apply a force to the second piston that overcomes a biasing force and positions the first piston to allow air to flow along the air path.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: November 28, 2017
    Assignee: Apex Brands, Inc.
    Inventors: Edouard Da Palma, Pascal Bourcier
  • Patent number: 9823668
    Abstract: A pressure regulator for a hydrogen storage system, wherein the pressure regulator is adapted to operate at temperatures below ?50° C., while minimizing the need for separate sealing elements and O-rings. The pressure regulator includes a main body including an inner cavity bounded by an interior wall, a piston disposed in the inner cavity, the piston including a first channel disposed adjacent a first portion, wherein the first portion is adapted to cooperate with the interior wall to form a seal between the piston and the interior wall, a first biasing device disposed in the first channel, wherein the first biasing device is adapted to exert a force on the first portion of the piston to form a seal between the first portion and the interior wall, and an end cap coupled to the main body thereby enclosing the piston to form an outlet pressure chamber.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: November 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Rainer Pechtold, Dimitri A. Podorashi, Hans Weidner, Wolfgang Markard
  • Patent number: 9452409
    Abstract: A reactor assembly comprising a reservoir, a reaction chamber, and a valve assembly comprising at least one valve. The reservoir, reaction chamber, and valve assembly are non-magnetic. The valve assembly is adapted to selectively provide fluid communication between the reservoir and the reaction chamber.
    Type: Grant
    Filed: April 22, 2012
    Date of Patent: September 27, 2016
    Assignee: VANDERBILT UNIVERSITY
    Inventor: Kevin W. Waddell
  • Patent number: 9103461
    Abstract: There is disclosed a mechanism for detecting that a valve coupled to a pressurized container is fully installed into a nose piece of a pneumatic actuator coupled to a fire suppression system.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: August 11, 2015
    Assignee: TLX Technologies, LLC
    Inventor: Derek Arvid Dahlgren
  • Patent number: 9074703
    Abstract: A pressure regulator for a hydrogen storage system, wherein the pressure regulator is adapted to operate at temperatures below ?50° C., while minimizing the need for separate sealing elements and O-rings. The pressure regulator includes a main body including an inner cavity bounded by an interior wall, a piston disposed in the inner cavity, the piston including a first channel disposed adjacent a first portion, wherein the first portion is adapted to cooperate with the interior wall to form a seal between the piston and the interior wall, a first biasing device disposed in the first channel, wherein the first biasing device is adapted to exert a force on the first portion of the piston to form a seal between the first portion and the interior wall, and an end cap coupled to the main body thereby enclosing the piston to form an outlet pressure chamber.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: July 7, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Rainer Pechtold, Dimitri A. Podorashi, Hans Weidner, Wolfgang Markard
  • Patent number: 9062788
    Abstract: There is disclosed a mechanism for detecting that a valve coupled to a pressurized container is fully installed into a nose piece of a latching solenoid actuator coupled to a fire suppression system.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: June 23, 2015
    Assignee: TLX Technologies, LLC
    Inventors: Mark William Mainland, Wayne Michael Groth, Derek Arvid Dahlgren
  • Patent number: 8915480
    Abstract: Valve actuator system and a system for operation of valves, which valve comprises a valve housing, which valve housing comprises at least one inlet and at least one outlet, which valve housing further comprises a valve closing element, which valve element is mechanical connected to a valve actuator, which valve actuator comprises at least one piston, which piston is moved in a housing by a pressurized fluid in at least one direction, which valve actuator is connected to a control valve which control valve regulates a flow of a liquid medium from a pressure source to a first cavity chamber in the hosing of the valve actuator where the valve is a sanitary valve primarily for regulation of a flow of Fluid food, which valve actuator is activated by a liquid medium.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: December 23, 2014
    Assignee: Kmatic Aps
    Inventor: Poul Elholm Jakobsen
  • Patent number: 8905067
    Abstract: Valve module for influencing a fluid supply of a fluid-operated load, comprising a valve housing with a valve chamber being connected to an inlet port and an outlet port and a pilot chamber being connected to an operating port, comprising a valve member which is movably adjustable between a blocking position and a release position and further comprising an actuator which is motion-coupled to the valve member, wherein a position of the actuator and the valve member can be set as a function of a pressure applied to the pilot chamber, and further comprising a sensor device for detecting a position of the valve member and/or the actuator along a movement axis, and the sensor device comprises an electric coil arrangement which forms a ring around at least one fluid port from the group comprising the operating port, the inlet port and the outlet port.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: December 9, 2014
    Assignee: Festo AG & Co. KG
    Inventors: Martin Maichl, Hannes Wirtl, Andreas Dickhoff
  • Patent number: 8899262
    Abstract: A gas cylinder valve 2 is able to be opened by application of a pilot gas pressure. In certain embodiments the gas cylinder valve 2 is usable with a yoke 8 for engaging with a valve assembly of a gas cylinder 1, the yoke comprising a pilot gas passage 28 able to connect a pilot gas chamber 37 in the cylinder valve assembly to a source of pressurized pilot gas and the cylinder gas port of the gas cylinder valve to an external cylinder gas passage. The valve and yoke enable the tamper-resistance of a gas cylinder to be improved.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: December 2, 2014
    Assignee: Linde Aktiengesellschaft
    Inventors: Paul Wadham, Andrew Tatarek
  • Patent number: 8857785
    Abstract: A thermo-hydraulically actuated valve including a housing; a closure member capable of preventing and permitting fluid flow through the housing. An actuation fluid chamber disposed at the housing and sealed from an external environment. A motive force transmitter in force transmissive communication with the closure member. The transmitter being in fluid communication with the actuation fluid chamber; and a heating element in thermal communication with the actuation fluid chamber. The valve being devoid of a dynamic seal between an area of the valve to be contacted by a managed fluid within the valve and an environment outside of the valve.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: October 14, 2014
    Assignee: Baker Hughes Incorporated
    Inventor: Terry R. Bussear
  • Patent number: 8720849
    Abstract: A pressure relief valve for use in regulating discharge fluid pressure of a pump. A first wall of the outlet intersects with the wall of the passage of the pressure relief valve. The housing includes a counterbore at the intersection of wall of the passage and the first wall of the outlet port to provide a counterbore surface that is perpendicular to the wall of the passage around the outer circumference of the valve body. The top end of the valve body includes a reduced diameter portion and a tapered portion between the reduced diameter portion and the top of the valve body.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: May 13, 2014
    Assignee: Magna Powertrain Inc.
    Inventor: Matthew Williamson
  • Patent number: 8657598
    Abstract: A pressure adjustment device applicable in particular, but not exclusively, to stretch blow molding machines. More particularly, the invention relates to a pressure adjustment device for stretch blow molding machines of containers made of plastic material. The device includes an opening for dispensing a blowing fluid, a hollow body having a first inlet opening for a high pressure fluid and a second inlet opening for a piloting fluid. A shutter is slidably arranged within the hollow body, the shutter being held in a closed position by elastic means, wherein the adjustable opening of the shutter occurs, in contrast with the elastic means, by introducing—through said second inlet opening—the piloting fluid into a piloting chamber arranged between the hollow body the shutter, and wherein the piloting fluid has a controlled and adjustable pressure.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: February 25, 2014
    Assignee: SMI S.p.A.
    Inventor: Vanni Zacche′
  • Publication number: 20130327551
    Abstract: The invention concerns a hydraulic, valveless impact mechanism for use in equipment for the machining of at least one of rock and concrete comprising a machine housing (105; 205) with a cylinder bore, a piston (110; 210) mounted such that it moves within this bore arranged to carry out when in operation repetitive reciprocating motion relative to the machine housing and in this way to deliver impact directly or indirectly on a tool connectable to the equipment for machining at least one of rock and concrete, and where the piston includes a driving part (140; 240) that separates a first drive chamber (160; 260) and a second drive chamber (125; 225), with an effective volume that is greater than that of the first drive chamber.
    Type: Application
    Filed: April 3, 2012
    Publication date: December 12, 2013
    Inventor: Lennart Donsé
  • Patent number: 8502163
    Abstract: A valve unit configured for a charged particle beam device having a beam path 2 is described. The valve unit includes a vacuum sealed valve housing 102 configured for a pressure difference between the inside of the valve housing and the outside of the valve housing, wherein the housing provides a beam path portion 103 for having a charged particle beam pass therethrough along the beam path, a valve positioning unit adapted for selectively providing a first movement of the valve housing such that the beam path portion is selectively moved into and out of the beam path, and at least one sealing element 122 configured for a second movement, wherein the second movement is different from the first movement.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: August 6, 2013
    Assignee: ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH
    Inventor: Thomas Jasinski
  • Patent number: 8496027
    Abstract: The invention relates to a lift valve (1; 1.1; 1.2; 1.3), particularly for process technology. The aim of the invention is to design a process valve of the type in question which acts as a lift valve, has a uniform (monolithic or multi-piece) closing part or member, is altogether shorter than all previously known, comparable valves, has a very simple design, and can be used for various embodiments such as check valves, tank bottom valves, or reversing valves. Said aim is achieved by the fact that the closing part (4; 4.1) opens towards the actuator (3; 3*) while the ends of the driving spring (7; 7.1, 7.2) directly or indirectly rest against the actuation rod (4a/4b) and a cover part (3b), respectively, said cover part (3b) delimiting the driving housing (3a) on the side of the driving piston (5; 5*) that faces away from the closing part (4; 4.1).
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: July 30, 2013
    Assignee: GEA Tuchenhagen GmbH
    Inventor: Jens Burmester
  • Patent number: 8469055
    Abstract: A device for driving a double seat valve with two closing elements arranged in series and displaceable with respect to each other. A sleeve-shaped fourth drive piston pressurized by pressure medium, sealingly embraces a second drive piston on the circumference and can engage a catching connection in the direction of a first drive piston, wherein a second drive piston is adapted to be axially displaceable in a limited manner in both directions with respect to the first drive piston and in each case against the force of a second spring.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: June 25, 2013
    Assignee: GEA Tuchenhagen GmbH
    Inventors: Jens Burmester, Matthias Suedel
  • Patent number: 8461526
    Abstract: In one embodiment, a first vacuum chamber of an electron beam column has an opening which is positioned along an optical axis so as to pass a primary electron beam that travels down the column. A source that emits electrons is positioned within the first vacuum chamber. A beam-limiting aperture is configured to pass a limited angular range of the emitted electrons. A magnetic immersion lens is positioned outside of the first vacuum chamber and is configured to immerse the electron source in a magnetic field so as to focus the emitted electrons into the primary electron beam. An objective lens is configured to focus the primary electron beam onto a beam spot on a substrate surface so as to produce scattered electrons from the beam spot. Controllable deflectors are configured to scan the beam spot over an area of the substrate surface. Other features and embodiments are also disclosed.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: June 11, 2013
    Assignee: KLA-Tencor Corporation
    Inventors: Marian Mankos, Liqun Han, Xinrong Jiang, Rex Runyon, Carmela Moreno
  • Patent number: 8434733
    Abstract: A valve for use in the control of pressurized air from a pressure tank, the pressure tank including a wall in which an outlet port is formed, the wall having an inner surface and an outer surface. The valve comprises a valve body of generally cylindrical configuration having an inner end which in use is located inside the pressure tank and an outer end which in use is located outside of the tank. A flow passage extends through the valve body, the flow passage having an inlet at or adjacent the inner end of the body and an outlet at or adjacent the outer end of the body. A valve seat surrounds the flow passage and a valve closure member is moveable towards and away from the valve seat to close and open the valve respectively. An operating means is provided for moving the valve closure member in order to operate the valve.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: May 7, 2013
    Assignee: Goyen Controls Co Pty Limited
    Inventor: Matthew Southam
  • Patent number: 8408245
    Abstract: A valve actuator includes a valve body, a valve member comprising a shaft, and a piston connected to the shaft, with the valve member being movable by operation of the piston. The valve body comprises a valve chamber that provides fluid communication between an inlet passage and an outlet passage. The shaft is disposed in and extends through a sealed chamber, the sealed chamber being sealed at one end from the valve chamber and at another end from a piston chamber, and a vent that extends from the sealed chamber to an external surface, wherein the shaft extends axially in both directions past sealed ends of the sealed chamber.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: April 2, 2013
    Assignee: Swagelok Company
    Inventors: Joel Feldman, Peter Sulcs, Daniel E. Zeiler, Charles W. Hayes, II, David Hasak, Yancy J. Waller
  • Patent number: 8403179
    Abstract: A conventional frozen carbonated beverage freezer is modified to eliminate the draw handle to facilitate better performance at the hands of an untrained customer in a serve yourself setting. A conventional FCB freezer, with or without a draw handle, is modified to enable dispensing different flavors of frozen carbonated beverages by a customer for a self-serve setting.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: March 26, 2013
    Assignee: Flavor Burst Co., L.L.P.
    Inventor: Ernest C. Gerber
  • Patent number: 8387944
    Abstract: In a valve assembly (1) comprising a valve housing (2), a valve seat (3) and a valve body (4) adapted to fit in closing relationship in said valve seat (3) in a closed position, said housing (2) has an inlet (5) and an outlet (6) for a pressurized fluid, positioned upstream and downstream of the valve members, respectively. The valve has a closed position being maintained by a closing force e.g. from a compression spring (7) and an open position, wherein the valve seat (3) and/or the valve body (4) are moved away from each other by an activating mechanism. A pressure balancing line (11) is provided internally or externally of the housing (2), wherein fluid of the fluid flow downstream of the moveable valve member (3, 4) is in fluid connection with the opposite end of said member, when in use.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: March 5, 2013
    Assignee: Vestergaard Company A/S
    Inventors: Elo Svanebjerg, Martin Højholm Jakobsen
  • Patent number: 8231101
    Abstract: The present invention relates to a duct connector for working fluid, that is durable and corrosion resistant, and a valve with the duct connector. The duct connector has a head portion with an internal fitting portion that fluidly communicates with the inside of a cylinder housing of the valve. It is affixed to the housing in such a manner that the head portion protrudes from the outer surface of the housing with the fitting portion being positioned outside the outer surface of the housing. Duct connectors may be formed by insert molding using a resin with a tensile elongation ratio of 50%-400% and tensile strength of 50 Mpa -200 MPa.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: July 31, 2012
    Assignee: Asahi Organic Chemicals Industry Co., Ltd.
    Inventor: Shunichiro Hagihara
  • Publication number: 20120152576
    Abstract: Provided is an actuator and method for operating an actuator. For example, the actuator may have first and second operating phases, a housing having an opening receiving pressure, a piston inside the housing for moving along inside the housing and positioned therein for creating a first chamber between one end of the piston and the housing and a second chamber between the other end of the piston and the housing, first and second ports each capable of communicating with the pressure source during a different one of the first and second phases, an extra area chamber between the piston and the housing. In the first phase the first port may be communicating with the opening for providing pressure to the first and extra area chambers. In the second phase the second port may be communicating with the opening for providing pressure to the second chamber.
    Type: Application
    Filed: December 15, 2011
    Publication date: June 21, 2012
    Applicant: VALHALLA TECHNOLOGIES, LLC
    Inventors: Grey Bassinger, Ross Darren Bassinger, Ross Darren Bassinger, Joseph Robert Goebel
  • Patent number: 8196893
    Abstract: An isolation valve includes a shield that surrounds and protects the valve closure actuator components from exposure to corrosive fluids that flow through the valve when the valve is open.
    Type: Grant
    Filed: August 19, 2008
    Date of Patent: June 12, 2012
    Assignee: MKS Instruments, Inc.
    Inventors: Kevin Grout, Jeffrey D. Kiernan, David Neumeister, Matthew C. Grout
  • Publication number: 20120126155
    Abstract: A portable remote controlled fire-fighting valve has a central chamber in a main valve body, an inlet that connects to a hydrant, an outlet that connects to a fire hose, a valve mechanism that has a seating surface that seats against part of the device to open and close a flow channel through the central chamber, and a remote controller that enables an operator to selectively open and close the flow channel. The valve mechanism uses a piston that is mounted for axial movement within the central chamber. The piston has an annular wall that slides against an outer edge of a lateral chamber surface that is fixed in position within the main valve body. A spring biases the piston to the closed position. In the open position, water from the inlet flows around the piston, over its peripheral surface, to the outlet. A pressure chamber is formed between a lateral surface that is fixed in position within the valve body and a movable interior surface on the piston.
    Type: Application
    Filed: November 19, 2010
    Publication date: May 24, 2012
    Applicant: Task Force Tips Inc.
    Inventors: David J. Kolacz, Stewart G. McMillan, Scott W. Akins, Timothy S. Miller
  • Patent number: 8123191
    Abstract: A valve system comprising a closure member that is linearly translatable within a valve body. A fail safe assembly is connected to the valve body and a first rod member that is connected to the closure member. A linear actuator is movably connected to the fail safe assembly and is operable to move the first rod member. A mechanical override system is connected to the linear actuator and is operable to move the linear actuator relative to the valve body.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: February 28, 2012
    Assignee: Cameron International Corporation
    Inventor: Loc G. Hoang
  • Patent number: 8083936
    Abstract: The production of purified water from a residential reverse osmosis drinking water system is limited by the pressure build up in the holding tank or reservoir. While the pressure in the tank increases the brine or waste water continues to flow at a constant rate. This condition makes an undesirable out of proportion relationship between the purified water and the waste water. The production of product water is controlled by the differential pressure across the purification membrane, as the tank pressure increases the differential pressure decreases and reduced production of product water results. The purpose of the device is to utilize the increasing tank pressure as a force to actuate the valve that proportions the waste water in a direct relationship with the product water. The ratio between the product water and the waste water remains constant during the period that purified water is being delivered to the holding tank.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: December 27, 2011
    Inventor: Robert Walker
  • Patent number: 8052116
    Abstract: A fluid power system includes a hydraulic machine. A pilot-controlled supply valve controls high-pressure fluid to the machine. The valve is coupled between the hydraulic machine and a high-pressure fluid source, and includes a control port for an actuation signal. The supply valve allows passage of fluid from the machine to the fluid source, but blocks passage of fluid from the fluid source to the machine while closed, or permits passage of fluid from the fluid source to the machine while open. The supply valve biases toward closed or open according to an actuation signal at the control port. A pressurization valve is also coupled between the hydraulic machine and the high-pressure fluid source. The pressurization valve blocks passage of fluid from the fluid source to the machine while in a first position, and allows a restricted passage of fluid between its input and output ports while in a second position, to allow pressure to equalize on either side of the supply valve before the supply valve opens.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: November 8, 2011
    Assignee: The United States of America as represented by the Administrator of the U.S. Environmental Protection Agency
    Inventor: Charles L. Gray, Jr.
  • Patent number: 8011639
    Abstract: A valve of the invention includes a valve body having an inlet, an outlet, and a flow passage connecting the inlet and outlet, the inlet, the outlet and the flow passage being in general axial alignment within the valve body. A valve seat surrounds the flow passage and a valve closure member is movable towards and away from the valve seat to close and open the valve respectively. The valve closure member is a poppet-type closure member axially mounted to a stem. The stem has a plurality of pistons spaced apart along the length thereof, and the valve body has a plurality of cylinders fixed relative thereto, the pistons each being slidable in a respective cylinder. The valve closure member is movable by varying the pressure in the cylinders. Preferably each of the cylinders has an outlet port through a wall thereof which is exposed when the closure member has moved towards or into a fully open position, pressure within said cylinders dissipating through those outlet ports when the outlet ports are exposed.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: September 6, 2011
    Assignee: Goyen Controls Co. Pty Ltd.
    Inventor: Andrew John McCausland
  • Patent number: 8011382
    Abstract: A bi-modal bleed valve assembly is provided. In one embodiment, the bi-modal bleed valve assembly includes a housing assembly having a bleed inlet, a bleed outlet, a control servo port, and a control chamber therein. A main flow control valve is fluidly coupled to the control chamber and configured to move between an open position and a closed position to regulate fluid flow from the bleed inlet to the bleed outlet. The main flow control valve is configured to move from an open position to a closed position when the pressure within the control chamber surpasses a predetermined threshold. A switching valve is fluidly coupled between the bleed inlet, the servo control port, and the control chamber. The switching valve is configured to route fluid flow into the control chamber from: (i) the bleed inlet in an autonomous mode, and (ii) the servo control port in a servo-controlled mode.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: September 6, 2011
    Assignee: Honeywell International Inc.
    Inventor: Robert B. Franconi
  • Patent number: 7984727
    Abstract: A valve for use in the control of pressurized air from a pressure tank, the pressure tank including a wall in which an outlet port is formed, the wall having an inner surface and an outer surface. The valve includes a valve body of generally cylindrical configuration having an inner end which in use is located inside the pressure tank and an outer end which in use is located outside of the tank. A flow passage extends through the valve body, the flow passage having an inlet at or adjacent the inner end of the body and an outlet at or adjacent the outer end of the body. A valve seat surrounds the flow passage and a valve closure member is moveable towards and away from the valve seat to close and open the valve respectively.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: July 26, 2011
    Assignee: Goyen Controls Co. Pty Ltd.
    Inventor: Matthew Southam
  • Patent number: 7913971
    Abstract: A valve system comprising a closure member that is linearly translatable within a valve body. A hydraulic override assembly comprises a first end that is connected to the valve body and a first rod member that is connected to the closure member. A linear actuator is connected to a second end of the hydraulic override assembly and comprises a second rod member that is operable to move the first rod member.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: March 29, 2011
    Assignee: Cameron International Corporation
    Inventor: Loc G. Hoang
  • Patent number: 7870869
    Abstract: Dome-loaded pressure regulators are disclosed. An example pressure regulator includes a dome-loaded pressure regulating valve fluidly coupled to a pressure inlet, a pressure outlet, and a control pressure. The pressure regulating valve includes a piston, having a transverse bore defining a fluid path through the piston to fluidly couple the pressure inlet to the pressure outlet configured to engage a valve seat and to respond to the control pressure to control the flow of fluid between the pressure inlet and the pressure outlet via the valve seat.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: January 18, 2011
    Assignee: Tescom Corporation
    Inventor: Todd William Larsen
  • Patent number: 7836694
    Abstract: A cooling air flow regulating device for controlling the flow of cooling air to an air bearing may comprise a housing with a piston and a spring disposed within. When the pressure of the cooling air is high, the piston is forced out of the path of the cooling air and into an open position. As the pressure of the cooling air decreases, the spring forces the piston back into the path of the cooling air, effectively blocking the flow of cooling air to the air bearing. The cooling air flow regulating device of the present invention may be useful for controlling the cooling of air bearings in turbochargers of turbocharged engine, where at low engine speed, cooling air is not required for air bearings. Methods for using the cooling air flow regulating device of the present invention are also provided.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: November 23, 2010
    Assignee: Honeywell International Inc.
    Inventor: Steven Don Arnold
  • Patent number: 7836915
    Abstract: A valve gate piston assembly, in an injection molding system, is positioned in a staggered arrangement such that one piston assembly overlaps that of another valve gate piston assembly thereby minimizing an overall centerline pitch between said piston assemblies. Such a superposed layout of piston assemblies enables larger diameter pistons to occupy a smaller footprint than would be realized should the same piston assemblies be positioned side by side. The use of relatively larger diameter pistons results in an increased force available, for the same input air pressure, to actuate the pistons and valve stems attached thereto, resulting in a higher valve stem closing force. A staggered piston assembly layout also allows independent air circuits to control each piston separately. A combination of multiple piston assemblies may be configured in such a staggered, overlapping array.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: November 23, 2010
    Assignee: Husky Injection Molding Systems Ltd.
    Inventors: Patrice Fabien Gaillard, Manon Danielle Belzile, Edward Joseph Jenko
  • Publication number: 20100148099
    Abstract: A valve assembly having a pressure dead band includes a first valve or sleeve slidably disposed within a valve body. A second valve is partially slidably disposed within the first valve and partially slidably disposed in the valve body. A plurality of fluid passages communicate with the valve assembly and provide a first flow of hydraulic fluid and a second flow of hydraulic fluid. A lower threshold of the pressure dead band is defined by the pressure on the combination of the first area of the first valve and the first area of the second valve required to balance the resultant force developed on the second area of the second valve. An upper threshold of the pressure dead band is defined by the pressure on the first area of the second valve required to balance the resultant force developed on the second area of the second valve.
    Type: Application
    Filed: November 3, 2009
    Publication date: June 17, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Philip C. Lundberg, Bret M. Olson
  • Patent number: 7708255
    Abstract: A thermal deburring apparatus has a pressure-tight closeable deburring chamber connected to an environment via a ventilation passage having a passage direction; a ventilation valve closing said ventilation passage and having a stationary valve seat encompassing said ventilation passage, a valve tappet that is movable in said passage direction, and a seal affixed to said valve tappet.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: May 4, 2010
    Assignee: Robert Bosch GmbH
    Inventor: Hans-Juergen Conrad
  • Patent number: 7669610
    Abstract: Dome-loaded pressure regulators are disclosed. An example pressure regulator includes body having a pressure inlet and a pressure outlet. A piston is disposed in the body and fluidly coupled to the pressure inlet, the pressure outlet, and the pressure control inlet. The piston is configured to contact a valve seat and to control the flow of fluid from the pressure inlet to the pressure outlet in response to a pressure applied to a surface of the piston via the pressure control inlet.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: March 2, 2010
    Assignee: Tescom Corporation
    Inventor: Todd William Larsen
  • Patent number: 7651066
    Abstract: A device used for pneumatic control, includes a control piston carried in a cylinder. The control piston is mounted so as to be movable in the direction of a longitudinal piston axis, and a primary flow path that can be closed by the control pressure passes through the cylinder. The control piston is provided with a control surface that faces a control chamber of the cylinder and that is designed to transmit a control force to the control piston. The control piston is made at least partially of a plastic.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: January 26, 2010
    Assignees: Norgren AG, KHS Corpoplast GmbH & Co. KG
    Inventors: Klaus Vogel, Michael Litzenberg
  • Publication number: 20090260698
    Abstract: A fluid control system, including: a housing having an inlet, an outlet, and a pressure chamber; a shuttle assembly adapted to reciprocate in the pressure chamber to regulate the flow of an operating fluid from the inlet to the outlet; the operating fluid applying an opening force to a first end of the shuttle assembly; a control fluid to apply a closing force to an opposite end of the shuttle assembly; wherein an operating fluid pressure area of the first end of the shuttle assembly when in a closed position is at least 65 percent of the operating fluid pressure area of the first end of the shuttle assembly when in an open position.
    Type: Application
    Filed: April 16, 2008
    Publication date: October 22, 2009
    Applicant: M-I LLC
    Inventor: Roger Suter
  • Patent number: 7559336
    Abstract: A pressure limiting valve having a spool with raised spool lands. The spool is slidably received in a spool bore having inflow and outflow grooves that form control edges. The valve has two control edges, and a hydraulic resistance is connected in series with one of the control edges. Increasing static pressure losses at the control edges during flow, so-called flow forces, can be offset by an increasing back pressure on the valve spool, which is produced by the hydraulic resistance.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: July 14, 2009
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Eric Müller, Manfred Homm, Reinhard Stehr
  • Patent number: 7549911
    Abstract: A media control valve includes a valve body having a media inlet and a media outlet with the valve body being adapted to be mounted on a flow device for providing communication between the media outlet and the flow device. A pressure balance flow line is provided in communication with the valve body and also with the flow device at a point upstream of the media outlet for balancing the pressure in the valve. A check valve may be included in the balance flow line for assuring that flow generally flows from the flow device to the valve body. A cleanout port may be provided for permitting clean out of the valve without disassembly when not in use.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: June 23, 2009
    Assignee: Axxiom Manufacturing, Inc.
    Inventor: Phoung Taylor Nguyen
  • Publication number: 20090101854
    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: Application
    Filed: October 7, 2008
    Publication date: April 23, 2009
    Inventor: Man Suk JEON
  • Publication number: 20090032748
    Abstract: An overfill protection device includes a piston (5) comprising a main seal or semi-sphere packing (3) on its tip and a V-shaped packing (4) on its side, a retracting spring (2) for pushing the piston back to its original position, a main valve (7) with an o-ring that drops into the inner hole of the retainer (10) to block off the gas flow, a level arm consisting of a rising faced section (28) and a U-shaped section (29), whereby no gas will be allowed to flow through the overfill protection device when the gas reaches the predetermined 80 percent level.
    Type: Application
    Filed: August 3, 2007
    Publication date: February 5, 2009
    Inventor: Jakaphan Kidprasert
  • Patent number: 7434780
    Abstract: A pilot-type two-port valve is disclosed having a water hammer preventing mechanism, operative to prevent a water hammer during valve-closing operation, which includes a valve member operative to open or close a valve and a piston driven by pilot fluid for operating the valve member for opening and closing movements. The water hammer preventing mechanism comprises a piston drive chamber, from which fluid is discharged during valve-closing operation, which has an orifice for restricting the flow rate of discharge fluid whereby when the piston moves to a position to allow the valve member to be close to a valve seat, a portion of an discharge flow passage of the piston drive chamber is blocked to restrict the flow rate of the discharge fluid to the flow rate of fluid flowing through the orifice.
    Type: Grant
    Filed: July 3, 2006
    Date of Patent: October 14, 2008
    Assignee: SMC Corporation
    Inventors: Bunya Hayashi, Shinji Miyazoe, Shinichi Yoshimura