Bypass In Valve Casing Patents (Class 137/513.7)
  • Patent number: 10690257
    Abstract: The present invention discloses an improved operating fluid reservoir having a venting and/or air admission valve. The operating fluid reservoir is characterized in that a valve housing is formed integrally with an operating fluid reservoir wall. A vent opening, via which a valve housing interior is in fluid communication with a vent line, is embodied as a through opening through the operating fluid reservoir wall. A valve body, which is arranged in the valve housing interior, can be introduced into the valve housing interior via an introduction opening in the valve housing. The valve body comprises a holding device, by which the valve body is held movably in the valve housing.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: June 23, 2020
    Assignee: KAUTEX TEXTRON GMBH & CO. KG
    Inventors: Ibrahim Koukan, Roland Linsenboll, Jaroslav Maglovski
  • Patent number: 10359242
    Abstract: A flow control system in an inlet duct to a heat exchanger includes a door having a first end and a second end opposite the first end. The first end rotates about an axis and the second end moves between an open position and a closed position to respectively allow and prevent flow into the heat exchanger. The second end has a rounded configuration. A plurality of mixing elements are downstream of the door. At least one mixing element has a base portion and a distal portion, and the base portion has a base width and the distal portion has a distal width. The base width is wider that the distal width.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: July 23, 2019
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Patrick Trizila, Yogendra Yogi Sheoran, Frank Lin
  • Patent number: 9790676
    Abstract: A delayed shutoff device comprises a conduit configured to allow a fluid to flow through, wherein the conduit includes a conduit start and a conduit end. The device further comprises a plug configured to be placed inside the conduit at the conduit start; move inside the conduit from the conduit start toward the conduit end when the fluid flows through the conduit; and reduce the fluid flow upon reaching the conduit end. The device is configured to allow a pass-through quantity of the fluid to pass through the conduit while the plug moves from the conduit start to the conduit end. The conduit end may form a seat, the plug being configured to stop moving upon reaching the seat. The plug may be configured to fit the seat imperfectly, to allow a seepage of the fluid after reaching the seat.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: October 17, 2017
    Assignee: Innovative Devices LLC
    Inventors: Guy Lewis Scribner, Payton Hurlin Scribner, Kenneth Stephen Ray
  • Patent number: 9765702
    Abstract: Methods are provided for ensuring non-excessive variation of a gradient of an applied split bias versus firing temperature of a gas turbine engine. It is determined that an incremental split bias step is to be taken, and a current firing temperature of the gas turbine engine is identified on a graph. A first difference between a split schedule and an applied schedule gradient is calculated using lower firing temperatures than the current firing temperature, and a second difference is calculated using higher firing temperatures. If the first difference exceeds a predetermined limit, the incremental split bias step is not allowed at a lower firing temperature, and similarly, if the second difference exceeds a predetermined limit, the incremental split bias step is not allowed at a higher firing temperature.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: September 19, 2017
    Assignee: ANSALDO ENERGIA IP UK LIMITED
    Inventors: Donald Gauthier, Hany Rizkalla, Peter John Stuttaford
  • Patent number: 9586411
    Abstract: An obturator device (1) for a printhead comprising: an obturator assembly (3) having a valve surface (6) movable along at least one direction of displacement (X) between a first position in which the valve surface (6) is at a distance from a reference surface (A) and a second position in which the valve surface (6) is in contact with the reference surface (A); an actuator (2), secured to the obturator assembly (3) and operable to displace the obturator assembly (3) between the first position and second position; characterized in that the obturator assembly (3) comprises: an adjustable coupling (11) configured to allow the valve surface (6) to align its orientation relative to the reference surface (A) thereby ensuring improved engagement between the surfaces.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: March 7, 2017
    Assignee: I.C. S.R.L. CON SOCIO UNICO
    Inventors: Gianmario Guidotti, Giovanni Barbanti, Marco Faretra
  • Patent number: 9541075
    Abstract: A motor vehicle hydraulic brake system master cylinder, having at least one piston which is arranged in a housing and displaceable along an axis as a result of brake actuation and to which a pressure chamber which can be connected to wheel brakes, and a refill chamber is assigned, wherein the pressure chamber in the non-actuated state can be connected to a fluid reservoir via a compensating bore and on actuation of the brake can be isolated therefrom by means of a cup seal arranged on the piston in order to build up pressure. The master cylinder having a cup seal arranged in a radially open, encircling groove of the piston which groove is formed by a first and a second radially encircling projection, wherein when the brake actuation is released additional fluid is drawn from the refill chamber in the direction of the pressure chamber via the second projection.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: January 10, 2017
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Volker Posch, Harald König, Udo Jungmann
  • Patent number: 9525156
    Abstract: A deposition method using a deposition apparatus includes: depositing a first deposition layer on substrates in first process chambers of a first deposition cluster; transferring a substrate of the substrates in one of the first process chambers into a first transfer chamber of the first deposition cluster, which is connected to each of the first process chambers; transferring the substrate within the first transfer chamber of the first deposition cluster into a connection chamber, which is connected to the first transfer chamber and first and second gas supply lines; supplying a gas into the connection chamber through the second gas supply line to change an inside pressure of the connection chamber from a preset first pressure into a preset second pressure, which is different from an atmospheric pressure; and transferring the substrate within the connection chamber into a second transfer chamber of a second deposition cluster.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: December 20, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Jea-Roung Lim
  • Patent number: 9464574
    Abstract: A method for running up a stationary gas turbine is provided. The turbine has a combustion chamber, the burners of which have a pilot burner and a main burner and by which various types of fuel are introduced into the combustion chamber for burning. The method, carried out while a rotor of the gas turbine is accelerating from a standstill to a nominal speed, includes feeding fuel of a first type of fuel to the pilot burners and feeding fuel of the first type of fuel to the main burners. In order to provide a method in which a comparatively low supply pressure is required in the fuel supply system and in which combustion vibrations that put the machine at risk are avoided during the running-up process, it is proposed that fuel of a second type of fuel is fed to the burner before the nominal speed is reached.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: October 11, 2016
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Eberhard Deuker, Berthold Kostlin, Jurgen Meisl, Dennis Nehlsen, Kai-Uwe Schildmacher
  • Patent number: 9421767
    Abstract: A liquid ejecting head includes a nozzle which ejects a liquid, a pressure chamber, a portion of which is partitioned by a flexible diaphragm and which communicates with the nozzle, a piezoelectric element which is laminated on an opposite side of the diaphragm from the pressure chamber and changes a pressure within the pressure chamber, and a reservoir which communicates with the pressure chamber, in which a valve mechanism is provided in a region which is distanced from a region in which the piezoelectric element of the diaphragm is laminated, and is configured to allow the liquid to flow from the reservoir side into the pressure chamber side while inhibiting the liquid from flowing out from the pressure chamber side to the reservoir side.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: August 23, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Yoichi Naganuma, Eiju Hirai
  • Patent number: 9382821
    Abstract: A biased normally open check valve assembly for facilitating Multiair® engine start-up after extended periods of non-use. The check valve is biased in an open position and allows for the ventilation of air out of the system so that the engine can start. The check valve also comprises a metering groove in a valve seat. The metering groove is configured to allow a controlled flow of hydraulic fluid through the check valve when the check valve is in a closed position.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: July 5, 2016
    Assignee: FCA US LLC
    Inventor: Thomas C Edelmayer
  • Patent number: 9010364
    Abstract: A valve for regulating the flow of fluid through an access port in a fluid chamber includes a body having a first end and a second end, the second end being located in the access port and the first end protruding outside of the access port. An axial bore extends from the first end to the second end, an injection fitting is formed at the first end of the body in fluid communication with the axial bore, and the second end of the body includes a selective sealing interface. The body forms a sealing interface with a threaded inner wall surface of the access port. A one-way valve assembly is positioned within the axial bore, and is arranged to permit a flow of fluid therethrough in a downstream direction and prevent the flow of fluid therethrough in an upstream direction. A bypass passageway extends from the selective sealing interface separate from the axial bore. A connecting passageway connects the bypass passageway with the axial bore upstream of the one-way valve assembly.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: April 21, 2015
    Assignee: Clark Equipment Company
    Inventors: Thomas J. Tokach, William C. Shelbourn, Scott N. Schuh
  • Publication number: 20150101687
    Abstract: A valve is provided including a valve body and a valve element arranged within the valve body. The valve body includes an inlet port, an outlet port, and an inner surface that defines a flow channel. The valve element includes a through passage and is configured to rotate between an open position and a closed position to control a flow of fluid through the flow channel. A check valve assembly is arranged within the valve element generally perpendicular to the through passage. The check valve assembly is configured to move between a first position and a second position in response to an increase in pressure when the valve element is in a closed position.
    Type: Application
    Filed: October 16, 2013
    Publication date: April 16, 2015
    Applicant: Hamilton Sundstrand Corporation
    Inventors: Steve Shubat, Donna S. Prause
  • Patent number: 8974203
    Abstract: A pump having an endplate with an orifice provided between the system ports and the charge pump pressure cavity. Fluid flows through the orifice so as to soften a transition of the vehicle from a stationary position to a forward or reverse motion when a swash plate of the pump is angled slightly relative to a neutral or zero position.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: March 10, 2015
    Assignee: Parker-Hannifin Corporation
    Inventors: Michael Tholan Crosby, Billie Frances Burleigh, Brian Timothy Painter
  • Publication number: 20150004036
    Abstract: A relief valve assembly is provided for use in connection with high pressure and ultrahigh pressure pumps. The relief valve assembly includes a valve pin having an engagement portion with a tapered surface and a valve seat having a valve pin receiving aperture defining a tapered surface on the valve seat to sealingly mate with the engagement portion of the valve pin when the valve pin is seated against the valve seat in a seated configuration. The valve seat further includes at least one bypass passage that extends from the valve pin receiving aperture to an exterior surface of the valve seat such that when the valve pin is displaced away from the seated configuration fluid can pass through the bypass passage and an annular space created between the engagement portion of the valve pin and the valve seat. Systems incorporating the relief valve assembly are also provided.
    Type: Application
    Filed: January 11, 2013
    Publication date: January 1, 2015
    Inventor: Jordan J. Hopkins
  • Patent number: 8876017
    Abstract: A variable flow control nozzle has a head, a tube, and a valve. The head disposes adjacent an opening and has a screen for passage of fluid flow into and out of the head's interior. The tube extends from the head through the opening and secures the head thereto. A tube passage communicates the interior of the head with the other side of the opening. The valve disposed in the passage has a first condition permitting first fluid flow from the passage to the interior of the head and has a second condition permitting second fluid flow from the interior to the passage. The second fluid flow may be greater than the first fluid flow. The tube can have first and second tube members with different internal diameters, and the valve can use a ball movable between positions in the tube members.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: November 4, 2014
    Assignee: Bilfinger Water Technologies, Inc.
    Inventors: Michael Ekholm, Richard C. Maxson
  • Publication number: 20140060672
    Abstract: A pressure-limiting valve is proposed, in particular for a common rail system. The pressure-limiting valve comprises a valve support (10), a valve insert (12) which is connected to the valve support (10), a valve piston (14) which is mounted such that it can slide in the valve insert (12), and a closing spring (16) which acts on the valve piston (14) with a closing force in the closing direction. By means of the closing force, the valve piston (14) acts on a valve seat (18) which produces a hydraulic connection via a valve chamber (40) between a high-pressure space (33) and a low-pressure space (36), as soon as the hydraulic force which acts on the valve piston (14) in the opening direction exceeds the closing force of the closing spring (16). When the valve seat (18) is closed, a leakage gap (50) is formed between the valve chamber (40) and the low-pressure space (36), which leakage gap (50) makes it possible for the leakage to be discharged out of the valve chamber (40) into the low-pressure space (36).
    Type: Application
    Filed: March 8, 2012
    Publication date: March 6, 2014
    Applicant: ROBERT BOSCH GmbH
    Inventor: Marek Gomola
  • Publication number: 20130199634
    Abstract: A control device for hydraulic media with a control valve, in particular, a proportional valve that has a sleeve housing provided with radial openings, wherein at least one pressurized flow feed line, at least one control line, and at least one return line are connected to the openings, and the opening for the pressurized flow feed line is connected to a ring-shaped groove, with a control slide that has control edges and is supported in the sleeve housing so that it can move in the axial direction and is actuated by an electromagnetically constructed control unit, advantageously for controlling a phase adjustment device for the variable adjustment of the control times of gas exchange valves of a reciprocating piston internal combustion engine. A non-return valve is installed in the pressurized flow feed line or in the ring-shaped groove that is arranged in the sleeve housing.
    Type: Application
    Filed: January 11, 2013
    Publication date: August 8, 2013
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Schaeffler Technologies AG & Co. KG
  • Publication number: 20120266979
    Abstract: A check valve is installed in the pressure flow line of an abrasive blaster of the type having a pop-up valve which opens under pressure and closes when depressurized to a predetermined level. The check valve is upstream of the pop-up valve and includes a having a valve chamber in communication with the pressure system for seating a valve mechanism adapted for opening and closing the valve chamber in response to the pressure level in the pressure system for closing the pressure system to back flow when the pressure in the system reaches a predetermined level.
    Type: Application
    Filed: July 5, 2012
    Publication date: October 25, 2012
    Inventor: Phuong Taylor Nguyen
  • Patent number: 8240329
    Abstract: Disclosed is an apparatus for providing in-line, three-state, dual flow metering, high pressure relief, for use in a system utilizing compressible or incompressible media, which includes a centrally disposed magnetically homed ball with opposing axially aligned ball mating valve seats, with a high pressure relief spring deployed to control the pressure necessary to trigger high pressure relief.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: August 14, 2012
    Assignee: Robust Systems Solutions, LLC
    Inventors: Craig Shore, Aron Fleischmann
  • Patent number: 8096316
    Abstract: A valve system for use in a system including a first source of a first pressurized fluid and a second source of a second pressurized fluid includes a valve housing including a first inlet port adapted to be placed in fluid connection with the first source, a second inlet port adapted to be placed in fluid connection with the second source and an outlet port. The valve system further includes a backflow prevention system to prevent flow of the first pressurized fluid through the second inlet and to prevent flow of the second pressurized fluid through the first inlet port. The valve system is adapted to provide a fluid path between at least the first inlet port and the outlet port to enable fluid to be drawn from the outlet port to the first inlet port. Several of the valve systems of the present invention provide for flow from the first inlet port to the outlet port and concurrent flow from the second inlet port to the outlet port.
    Type: Grant
    Filed: October 27, 2008
    Date of Patent: January 17, 2012
    Assignee: Medrad, Inc.
    Inventors: Mark Trocki, David M. Reilly, James R. Neill, Christopher D. Capone
  • Patent number: 8092198
    Abstract: A fuel pump includes a pump housing having a compression chamber. A plunger is axially movable in the pump housing for pressurizing fuel in the compression chamber. A discharge valve is configured to open to supply fuel from the compression chamber to an internal combustion engine when pressure in the compression chamber is more than predetermined pressure. A fuel passage is configured to communicate a downstream of the discharge valve with an upstream of the discharge valve. An in-passage member is accommodated in the fuel passage. The in-passage member includes multiple members, which are combined to define a throttle portion for restricting fuel, which returns from the downstream of the discharge valve to the upstream of the discharge valve.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: January 10, 2012
    Assignee: Denso Corporation
    Inventors: Masayuki Kobayashi, Hitoshi Shibata, Tatsumi Oguri
  • Publication number: 20110011468
    Abstract: A check valve is installed in the pressure flow line of an abrasive blaster of the type having a pop-up valve which opens under pressure and closes when depressurized to a predetermined level. The check valve is upstream of the pop-up valve and includes a having a valve chamber in communication with the pressure system for seating a valve mechanism adapted for opening and closing the valve chamber in response to the pressure level in the pressure system for closing the pressure system to back flow when the pressure in the system reaches a predetermined level.
    Type: Application
    Filed: January 26, 2008
    Publication date: January 20, 2011
    Inventor: Phuong Taylor Nguyen
  • Patent number: 7604063
    Abstract: An apparatus for controlling the flow of a medium. The apparatus comprises a base having a plurality of arms extending from the base. The base and arms define a cage. A valve member is positioned within the cage. The apparatus further includes a biasing housing disposed within the base, and wherein a spring is disposed within the biasing housing. The apparatus further includes a passageway formed about the valve member when the valve member is opened so that the medium flows on the outer portion of the biasing housing, and wherein the flow of the medium in an opposite direction urges the ball into engagement with the valve seat. When the valve is open, the medium collapses the spring and the valve member blocks the flow of the medium from entering the biasing housing. A method of drilling a well with the flow valve positioned on a work string is also disclosed.
    Type: Grant
    Filed: February 10, 2005
    Date of Patent: October 20, 2009
    Inventor: Benny Donald Mashburn
  • Patent number: 7578129
    Abstract: A multiple-turbocharger system for an internal combustion engine includes a first turbocharger comprising a first compressor driven by a first turbine, the first turbine operable to be driven by exhaust gas from the engine; a second turbocharger comprising a second compressor driven by a second turbine, the second turbine operable to be driven by exhaust gas from the engine; a first conduit arranged for supplying exhaust gas from the engine to the first turbine, and a second conduit arranged for supplying exhaust gas from the engine to the second turbine; and a valve coupled with the second conduit and switchable between an open condition allowing exhaust gas flow from the second conduit to the second turbine, and a closed condition substantially preventing exhaust gas flow from the second conduit to the second turbine but allowing a leakage flow to the second turbine sufficient to keep the second turbine rotating.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: August 25, 2009
    Assignee: Honeywell International, Inc.
    Inventors: Jean-Luc Perrin, Philippe Renaud, Yannick Prebost
  • Patent number: 7296594
    Abstract: A combination neutral valve and check valve assembly is provided for use in connection with a closed hydraulic circuit and a sump such as in a hydrostatic transmission. A cage and check poppet are mounted in a valve body having an opening between the hydraulic circuit and sump. The check poppet is movable between a first position where it closes the valve opening and a second position where it is disengaged from the opening. A check compression spring is mounted in the cage and biases the poppet to the engaged position. A valve shuttle is located in the check poppet and movable between a first position where it closes a check poppet opening and a second position where it is disengaged from the opening. A neutral valve spring is engaged to the valve shuttle and the check poppet to bias the valve shuttle to the disengaged position.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: November 20, 2007
    Assignee: Hydro-Gear Limited Partnership
    Inventor: Eric S. Phanco
  • Patent number: 7171972
    Abstract: This invention provides a thermal energy system comprising a heat exchanger for transferring thermal energy between a source and a load, the heat exchanger having a primary side associated with the source, and a secondary side for conducting a fluid associated with the load, wherein the secondary side of the heat exchanger is passively back-flushed upon consumption of a portion of the fluid. Passive back-flushing prevents fouling of the heat exchanger due to sediments, scale,and mineral deposits which may be present in the circulating fluid.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: February 6, 2007
    Assignee: Queen's University at Kingston
    Inventor: Stephen J. Harrison
  • Patent number: 7128090
    Abstract: In a water-hammer preventing unit for a check valve according to the present invention, a retainer pipe having openings at two edges thereof is provided inside a short pipe to form a circular space with the short pipe, and openings are formed on this retainer pipe. Further an elastic tube is provided on an external peripheral surface of the retainer pipe and covers the openings, and a communication path is formed between the short pipe and the valve body holder, and the communication path communicates the circular space to the flow path in the upstream side of the valve body and, when a fluid flows in the reverse direction, a portion of the fluid is accommodated from the opening into the circular space by expanding the elastic tube toward the circular space, and also flows a portion of the fluid in the said circular space to the flow path in the upstream side from the valve body.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: October 31, 2006
    Assignee: Tozen Corporation
    Inventors: Akira Muroi, Tetsuro Miura
  • Patent number: 7069946
    Abstract: A slow-release check valve for a pneumatic system including a compressed gas source and a pneumatic device includes a body with a proximal, supply end and a distal, power end. Supply and power couplings are mounted on the body supply and power ends respectively and are adapted for coupling with a compressed gas source and a pneumatic device respectively. The body includes a passage with a frusto-conical configuration with a minimum-diameter supply end adjacent to the supply coupling and a maximum-diameter power end adjacent to the power coupling. A ball is movably located within the passage and engages the body in a closed position. The ball is biased towards its closed position by a spring. For power operation the ball is in an open position whereby gas flows around same. Disconnecting the hose causes the ball to move to its closed position and allows compressed gas to slowly dissipate from the disconnected hose whereby fishtailing is avoided.
    Type: Grant
    Filed: March 10, 2004
    Date of Patent: July 4, 2006
    Inventor: Edward I. Clare, Jr.
  • Patent number: 6953325
    Abstract: A safety device limits the pressure in an axial-piston compressor with variable piston displacement. The compressor has as wobble plate or swash plate whose tilt angle can be variably controlled by the pressure differential between the high pressure in the discharge pressure zone and the pressure in the piston-drive chamber. The safety device consists of a valve arranged in a connector channel between the discharge pressure zone and the pressure zone of the piston-drive chamber. When the discharge pressure exceeds a given pressure limit, the safety device responds by allowing an increased flow of pressure medium from the discharge pressure zone to the piston-drive chamber. The influx of pressure medium into the piston-drive chamber causes a reduction of the tilt angle of the swash plate or wobble plate.
    Type: Grant
    Filed: January 6, 2003
    Date of Patent: October 11, 2005
    Assignees: LuK Fahrzeug-Hydraulik GmbH & Co., KG, Behr GmbH & Co.
    Inventors: Georg Weber, Michael Sickelmann, Tilo Schäfer, Christoph Walter, Hans-Joachim Krauss, Harald Raiser, Frank Obrist
  • Patent number: 6952922
    Abstract: A choke valve of the clutch release cylinder wherein the actuating oil is slowly discharged when the clutch pedal is released, and when the clutch pedal is depressed, resistance to the actuating oil is minimized for the actuating oil to be swiftly and smoothly supplied to the clutch release cylinder, thereby improving the responsiveness of the clutch and preventing occurrences of noise and vibration when the clutch is in operation.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: October 11, 2005
    Assignee: Hyundai Motor Company
    Inventor: Jeong-Kyu Lee
  • Patent number: 6866062
    Abstract: A check valve for a compressed gas system. The valve has a body with an internal passage extending through the body and a valve seat positioned in the passage. A poppet is movable between a closed position in which the poppet engages the seat to block flow of gas through the passage and an open position in which the poppet is spaced from the seat to permit flow of gas. A retainer mounts the poppet in the passage and guides movement of the poppet. A spring urges the poppet to the closed position such that the poppet is responsive to pressure of the gas exceeding a predetermined value to move the poppet away from the seat against the urging of the biasing member and to the open position.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: March 15, 2005
    Assignee: Control Devices, Incorporated
    Inventor: Daniel A. Lammers
  • Patent number: 6834671
    Abstract: A check valve for micro electro mechanical structure devices (MEMS), and in particular pertains to a check valve which is adapted to be employed in connection with micro electro mechanical structure devices which are intended to be employed with supercritical fluids constituting working fluids. In a preferred embodiment, the check valve is equipped with a bypass channel including a freely moveable plug structure which, in the open position of the valve enables the ingress of supercritical fluids under high superatmospheric pressures, and subsequent to the filling of the system, let down to atmospheric pressure, causes the plug to be moved into a permanent valve-closed position.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: December 28, 2004
    Assignee: International Business Machines Corporation
    Inventors: John Michael Cotte, Kenneth John McCullough, Wayne Martin Moreau, John P. Simons, Charles J. Taft, Richard P. Volant
  • Patent number: 6830064
    Abstract: A leak control valve preventing the damage of the vacuum pump and/or the neighboring instruments even in the case of fluid leak at the vessel. The side wall of the valve poppet closes the channel to the outlet through restoring forces of the springs installed at both sides of the poppet in case when the abrupt pressure change happens by accident.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: December 14, 2004
    Inventor: Chang-Hyeon Ji
  • Patent number: 6827091
    Abstract: A thermal energy system including a heat exchanger for transferring thermal energy between a source and a load, the heat exchanger having a primary side associated with the source, and a secondary side for conducting a fluid associated with the load, wherein the secondary side of the heat exchanger is passively back-flushed upon consumption of a portion of the fluid. Passive back-flushing prevents fouling of the heat exchanger due to sediments, scale, and mineral deposits which may be present in the circulating fluid.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: December 7, 2004
    Assignee: Queen's University at Kingston
    Inventor: Stephen J. Harrison
  • Patent number: 6619182
    Abstract: A flow control apparatus for a fluid cylinder for a workpiece holder includes a flow restricting member and a flexible sealing member. The flow restricting member defines a first passageway and a sealing surface. The flexible sealing member is positioned around the sealing surface. A second passageway is defined between the sealing member and a sealing surface of the flow restricting member when the sealing member is pushed away from the sealing surface in response to fluid flow in a first direction. When fluid flow is applied in the opposite direction, the sealing member moves to engage the sealing surface to substantially limit or preclude fluid flow between the sealing member and the sealing surface in the second direction. The fluid flow in the second direction is thus restricted to flow through the first passageway, thereby slowing or controlling the flow in the second direction.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: September 16, 2003
    Assignee: Delaware Capital Formation, Inc.
    Inventor: Keith S. Attee
  • Patent number: 6604938
    Abstract: The invention relates to a device for gas burners, comprising at least two air nozzles 10, 11 for combustion air. The air nozzles 10, 11 are arranged in parallel. According to the invention, a flow restrictor 15 is assigned to one or more of the air nozzles 10, 11, respectively. Each of these flow restrictor 15 is capable of selectively shutting off the flow of air through the respective air nozzle 10, 11. This increases the range of modulation of the device according to the invention.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: August 12, 2003
    Assignee: Honeywell B.V.
    Inventors: Piet Blaauwwiekel, Albert Hietkamp
  • Patent number: 6263912
    Abstract: A fluid flow control valve within a pop-up sprinkler arrests fluid flow through a riser of the pop-up sprinkler under abnormal flow conditions, such as when the riser is broken or a sprinkler head is removed from the riser. The riser, which is movable relative to a housing of the pop-up sprinkler, is attached to a sprinkler head which distributes water to the surrounding area. A valve seat device is disposed within the riser. A stopper is positioned within a valve passageway defined by the valve seat device. The stopper selectively engages the valve seat to inhibit water flow through the riser under abnormal flow conditions. A biasing device prevents the stopper from engaging with the valve seat under normal flow conditions. A fluid flow control valve assembly within a swing joint of an irrigation system includes a first within a first elbow fitting and a second valve within a second elbow fitting. The first and second elbow fittings are movable relative to each other and together form the swing joint.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: July 24, 2001
    Assignee: Whetstone Group International, Inc.
    Inventors: Joseph P. Brown, Christopher J. Gyben, Edward M. Norum
  • Patent number: 6263911
    Abstract: A flow control valve arrests fluid flow from a primary line to a branch line when flow into the branch line exceeds a predetermined flow rate. In one embodiment for use with an irrigation system, the valve includes a T-fitting. The fitting defines a primary passage, which communicates with irrigation pipes, and a branch passage, which communicates with a riser and sprinkler assembly. A valve seat is located within a housing that couples with the fitting. The valve seat is located within the T-fitting when the valve is assembled. The location of the valve seat within the fitting allows the valve to function even when the riser and/or a portion of the housing is sheared off. A stopper selectively engages a valve seat to inhibit water flow through the branch passage when the flow rate through the branch passage exceeds the predetermined flow rate.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: July 24, 2001
    Assignee: Whetstone Group International, Inc.
    Inventors: Joseph P. Brown, Christopher J. Gyben, Edward M. Norum
  • Patent number: 6260575
    Abstract: A flow control valve arrests fluid flow from a primary line to a branch line when flow into the branch line exceeds a predetermined flow rate. In one embodiment for use with an irrigation system, the valve includes a T-fitting. The fitting defines a primary passage, which communicates with irrigation pipes, and a branch passage, which communicates with a riser and sprinkler assembly. A valve seat is located within a housing that couples with the fitting. The valve seat is located within the T-fitting when the valve is assembled. The location of the valve seat within the fitting allows the valve to function even when the riser and/or a portion of the housing is sheared off. A stopper selectively engages a valve seat to inhibit water flow through the branch passage when the flow rate through the branch passage exceeds the predetermined flow rate.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: July 17, 2001
    Assignee: Whetstone Group International, Inc.
    Inventors: Joseph P. Brown, Christopher J. Gyben, Edward M. Norum
  • Patent number: 6199584
    Abstract: A flow control valve arrests fluid flow from a primary line to a branch line when flow into the branch line exceeds a predetermined flow rate. In one embodiment for use with an irrigation system, the valve includes a T-fitting. The fitting defines a primary passage, which communicates with irrigation pipes, and a branch passage, which communicates with a riser and sprinkler assembly. A valve seat is located within a housing that couples with the fitting. The valve seat is located within the T-fitting when the valve is assembled. The location of the valve seat within the fitting allows the valve to function even when the riser and/or a portion of the housing is sheared off. A stopper selectively engages a valve seat to inhibit water flow through the branch passage when the flow rate through the branch passage exceeds the predetermined flow rate.
    Type: Grant
    Filed: May 19, 1998
    Date of Patent: March 13, 2001
    Assignee: Whetstone Group International, Inc.
    Inventors: Joseph P. Brown, Christopher J. Gyben, Edward M. Norum, Jr.