Plural Biasing Means Patents (Class 137/529)
  • Patent number: 10704642
    Abstract: A piston/damper tube assembly may include a damper tube with damping fluid, a movable piston rod, a working piston, a controllable 4-way bottom valve with a control member, and a compensation space. Two flow passage ways of the bottom valve connect the working space remote from the piston rod via the control member to the compensation space. Two control ways of the bottom valve load the control member on a first side with a pressure of the piston rod-side working space and on a second side with a pressure of the compensation space. The control member may control the flow passage ways in a manner dependent on the pressure of the piston-rod-side working space that prevails on the control member on the first side via a fluidic connection, and on the pressure of the compensation space that prevails on the control member on the second side via an opening.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: July 7, 2020
    Assignees: THYSSENKRUPP BILSTEIN GMBH, THYSSENKRUPP AG
    Inventors: Christoph Schmidt, Dmitrij Smeljanskij
  • Patent number: 10519745
    Abstract: A valve for a plug passage features opposed perforated magnetic discs that repel each other to stay apart allowing flow through the openings of the spaced discs. When a predetermined flow rate is exceeded, the magnetic repelling force is overcome and one disc moves toward the other to shut off flow as contact between the discs closed the openings between them. One way is to offset the openings and guide the moving disc axially while rotationally locking the moving disc. Another way is to spirally guide the moving disc so that openings initially aligned rotate out of alignment. One or more edge slots can be provided in each disc to sweep out debris that can settle between the discs that would otherwise impede the moving disc from contacting the stationary disc for passage closure.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: December 31, 2019
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Steven R. Merrill, Yash Parekh, Steve Rosenblatt
  • Patent number: 10480667
    Abstract: A valve for use in a tank vessel that includes a valve housing configured to fit into a threaded vent opening of the tank vessel and a sleeve weldment coupled to the valve housing. The sleeve weldment includes a first end configured to protrude into an interior volume of the tank vessel, and the first end is thermally balanced with the interior volume of the tank vessel. The valve also includes a valve plunger configured to be installed within the sleeve weldment. The valve plunger includes a valve bottom configured to seal an opening between the valve bottom and an interior opening of the sleeve weldment. The valve also may include a cam configured to force the valve plunger into the interior of the tank vessel to break the seal between the valve bottom and the interior opening of the sleeve weldment.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: November 19, 2019
    Inventor: Lafayette Mitchell
  • Patent number: 10436187
    Abstract: A compressor may include a housing, a piston, and a cylinder head assembly. The housing defines a cylinder and a first valve seat defining a recess. The piston is movable within the cylinder to define a compression chamber. The cylinder head assembly is mounted on the housing and includes a valve plate, a suction valve, a discharge valve and a head cover. The valve plate may be mounted to the mounting surface and may include a suction plenum, a suction passage providing fluid communication between the suction plenum and the cylinder, and a discharge passage. The suction valve can seat on the first valve seat to allow fluid flow through the suction passage. The head cover may include a discharge chamber and an integrally formed guide post extending into the discharge chamber. The guide post may include a pocket that receives a discharge valve stem for reciprocation therein.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: October 8, 2019
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Ernest R. Bergman, Brian G. Schroeder, Michael R. Schultz Navara, Adam Michael Blake
  • Patent number: 10384858
    Abstract: A high flow valve for use in conjunction with a compressed gas, an aerosol or in bag-on-valve applications, and particularly to a valve having a housing that is supported by a mounting cup for a product container or can, and communicates with a product or product containment bag inside the can. A radial opening or orifice of the valve is positioned closer to a lower seal of the valve stem, rather than an upper seal or mounting cup gasket, to facilitate an increased flow rate for dispensing the product from the container and the valve.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: August 20, 2019
    Assignee: Summit Packaging Systems, Inc.
    Inventors: Daniel E. Davideit, Kevin G. Verville
  • Patent number: 10271632
    Abstract: A hand held heatable vessel has a bottom and upward extending wall which terminates into a top having an open top receiving surface, a removable cap connects to the top receiving surface, the removable cap has an outer portion which removably sealably connects to the top receiving surface and has an interior channel extending therethrough and has a valve seat in a lower end thereof, a valve stem with a valve head seal is operably disposed in the interior channel and a spring is operably disposed about the valve stem in a manner to bias the valve head seal against the valve seat to a normally closed position. A secondary vessel is provided about the hand held heatable vessel.
    Type: Grant
    Filed: January 9, 2016
    Date of Patent: April 30, 2019
    Inventor: Daniel J. Anerino
  • Patent number: 10197071
    Abstract: Metering device for introducing a liquid additive into a main liquid flowing along a pipe, includes a pump for withdrawing additive from a container and metering it, this pump including a first inlet for receiving a flow of main liquid which drives the pump, a second inlet for picking up additive and an outlet for the resulting mixture; a Venturi installed in the pipe, and connected in parallel with the pump, the first pump inlet connected by a first line to the Venturi inlet while the outlet connected by a second line to the Venturi throat; a first element for varying the restriction at the Venturi neck, and a second element sensitive to the pressure drop across the pump for controlling the first element to reduce the bore section when the pressure drop across the pump increases, and increase the bore section when the pressure drop across the pump decreases.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: February 5, 2019
    Assignee: DOSATRON INTERNATIONAL
    Inventors: Sebastien Furet, Sandrine Lambinet, Philippe Duquennoy, Manal Badii
  • Patent number: 10180196
    Abstract: A fluid control apparatus configured to be able to reduce electric power consumption required for opening/closing operations of a fluid control valve includes a valve body and a valve seat one of which is formed of a magnetic material and the other of which includes a magnet, the valve body and the valve seat being incorporated in a fluid flow passage and movable to come into contact with or away from each other to control communication of fluid, an urging member configured to urge the valve body toward the valve seat, an electric pump for flowing the fluid in the flow passage, and a control section for effecting control to increase an output of the electric pump to a preset state when the valve body under a closed state as being in contact with the valve seat is to be opened.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: January 15, 2019
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Atsushi Sato, Yasuo Ozawa
  • Patent number: 10060499
    Abstract: A system for controlling vehicle motion is described. The system includes: a first set of sensors coupled with a vehicle, the first set of sensors configured for sensing the vehicle motion; and a vehicle suspension damper coupled with the first set of sensors, the vehicle suspension damper configured for adjusting a damping force therein, the vehicle suspension damper comprising: a primary valve; a pilot valve assembly coupled with the primary valve, the pilot valve assembly configured for metering a flow of fluid to the primary valve, in response to at least the sensing; and an orifice block coupled with the primary valve and comprising a control orifice there through, the control orifice configured for operating cooperatively with the pilot valve assembly in the metering the flow of fluid to the primary valve.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: August 28, 2018
    Assignee: Fox Factory, Inc.
    Inventors: Everet Owen Ericksen, Robert C. Fox, John Marking
  • Patent number: 9874286
    Abstract: Disclosed is a differential pressure valve comprising: a valve body, the valve body having at least one flow inlet and one flow outlet: at least one shutter, the shutter being movable between an open position and a closed position under a differential pressure across the valve; at least one flow passage from the flow inlet to the flow outlet; at least one biasing member configured to bias the shutter towards a closed position so as to block the flow passage through the flow inlet. The biasing member is a non-linear biasing member.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: January 23, 2018
    Inventors: Riccardo Bagagli, Leonardo Tognarelli, Carmelo Maggi, Alberto Babbini
  • Patent number: 9739390
    Abstract: A valve pressure assembly for pressurizing an actuating mechanism of a thief hatch is provided. The valve pressure assembly includes a pressure bar comprising a first end, a second end, and a body located between the first end and the second end; a connector coupled to the body and configured to removably couple to the actuating mechanism; and a clamp coupled to at least one of the first end and the second end, the clamp comprising a fastener removably coupled to the relief valve, wherein the fastener is configured to adjustably move the pressure bar and the connector in contact with the actuating mechanism to facilitate pressuring the actuating mechanism to remain in an operative position.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: August 22, 2017
    Assignee: Bonanza Creek Energy Operating Company, LLC
    Inventor: Fred Kayser
  • Patent number: 9529370
    Abstract: A paint circulating system back pressure regulator comprises a flow passage for paint, at least part of which is disposed between a fixed structure and a moveable surface which is moveable to vary the width of the flow passage so as to regulate a pressure of paint upstream of the regulator. The regulator is also provided with a chamber having an opening for communicating with a supply of a pressurised fluid for controlling operation of the regulator.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: December 27, 2016
    Assignee: Finishing Brands UK Limited
    Inventors: Alan Smith, Nigel Charles Wood
  • Patent number: 9297373
    Abstract: A differential pressure valve is disclosed, comprising: a valve body, the valve body having at least one flow inlet and one flow outlet; at least one shutter, the shutter being movable between an open position and a closed position under a differential pressure across the valve; a flow passage from the flow inlet to the flow outlet; at least one biasing member configured to bias the shutter towards a closed position so as to block the flow passage through the flow inlet. The biasing member comprises at least two springs arranged in parallel, one of the springs having at least one resonance frequency different from at least one resonance frequency of the other of the two springs.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: March 29, 2016
    Assignee: Nuovo Pignone S.P.A.
    Inventors: Riccardo Bagagli, Carmelo Maggi, Alberto Babbini, Leonardo Tognarelli
  • Patent number: 9074517
    Abstract: An object is to provide a vehicle coolant control valve having excellent response, small size and weight, and low power consumption. A coolant stop valve (vehicle coolant control valve) valve comprises a valve body for controlling the flow of a fluid, the valve body having a magnetic body; a coil spring (urging device) for moving the valve body in the closing direction; a valve seat capable of coming in contact with the valve body; and a solenoid for moving the valve body in the closing direction; wherein the valve body is moved in the opening direction by fluid pressure of a fluid discharged from a water pump (pump) during operation of the water pump (pump), against the movement force of the coil spring (urging device) in the closing direction.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: July 7, 2015
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Masanobu Matsusaka, Tadayoshi Sato, Kentaroh Mochizuki, Koji Nunami
  • Patent number: 8932047
    Abstract: A propellant flow actuated piezoelectric igniter device using one or more hammer balls retained by one or more magnets, or other retaining method, until sufficient fluid pressure is achieved to release and accelerate the hammer ball, such that it impacts a piezoelectric crystal to produce an ignition spark. Certain preferred embodiments provide a means for repetitively capturing and releasing the hammer ball after it impacts one or more piezoelectric crystals, thereby oscillating and producing multiple, repetitive ignition sparks. Furthermore, an embodiment is presented for which oscillation of the hammer ball and repetitive impact to the piezoelectric crystal is maintained without the need for a magnet or other retaining mechanism to achieve this oscillating impact process.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: January 13, 2015
    Assignee: Innovative Engineering Solutions, Inc.
    Inventor: Mark A. Wollen
  • Publication number: 20140360599
    Abstract: A fluid pressure regulating unit, comprises a fluid inlet port, a fluid outlet port, a valve comprising a movable valve part, wherein the movable part comprises at least one fluid pressure balancing means and wherein the at least one pressure balancing means comprises a tapered surface, and a main valve biasing means. The main valve biasing means biases said valve in the direction of an open position. An auxiliary valve biasing means is provided, biasing the valve in the direction of a closed position. Wherein essentially every surface part, being in fluid connection to the fluid inlet port and having a surface normal at least partially in parallel to the moving direction of the moving part of the valve, is balance by a balancing surface part.
    Type: Application
    Filed: August 22, 2014
    Publication date: December 11, 2014
    Inventor: Soeren Kristoffersen
  • Patent number: 8863781
    Abstract: A valve apparatus and methods associated thereof are provided. The valve apparatus includes a valve housing structure. A first valve portion is connected to the valve housing structure, wherein the first valve portion has a sealing edge. A second valve portion is positioned at least partially within the valve housing structure. A constrictable membrane has a pressurizable interior compartment, wherein the constrictable membrane supported by the second valve portion and positioned proximate to the first valve portion, wherein at least a portion of the constrictable membrane is movable to engageable with the sealing edge of the first valve portion.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: October 21, 2014
    Assignee: Symmetry Medical Manufacturing, Inc.
    Inventors: Jon B. Taylor, James J. Kennedy, III, Paul LaRue, George P. Hannafin
  • Patent number: 8851065
    Abstract: A heating system can include certain pressure sensitive features. These features can be configured to change from a first position to a second position based on a pressure of a fuel flowing into the feature. These features can include, fuel selector valves, pressure regulators, burner nozzles, and oxygen depletion sensor nozzles, among other features.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: October 7, 2014
    Inventor: David Deng
  • Patent number: 8733402
    Abstract: A pressure control valve including a valve housing having a first opening and second opening. The valve housing including a valve member configured to control gas flow between the first opening and the second opening. The valve member is supported by a first membrane and a second membrane, both of which are formed on a single-piece membrane body.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: May 27, 2014
    Assignee: Mahle International GmbH
    Inventors: Leszek Goerlich, Stefan Ruppel, Hartmut Sauter
  • Patent number: 8726934
    Abstract: A multi-mode pressure relief valve includes a body having fluid inlet and outlet ports and a compressed gas inlet port. The fluid ports and gas port isolated from one another. A reciprocating piston is in communication with the gas port. A valve stem is movable between an open condition and a closed position to permit and stop flow communication between the fluid ports. A spring is disposed between the valve stem and the piston and urges the piston and valve stem away from one another.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: May 20, 2014
    Assignee: Illinois Tool Works Inc.
    Inventor: Edward W. Bolyard, Jr.
  • Publication number: 20140124066
    Abstract: A flow valve that may act as either an excess flow valve or a pressure relief valve has a seat and a valve body for sealing against the seat. The valve body has an integral spring arm for biasing the valve body towards or away from the seat to seal or open a flow of fluid, and a magnet cooperating with the spring arm to position the body relative to the seat to maintain the body in a first position during a normal flow condition and maintain the body in a second position in an abnormal flow condition.
    Type: Application
    Filed: January 15, 2014
    Publication date: May 8, 2014
    Applicant: BrassCraft Manufacturing Company
    Inventors: Mark Koeroghlian, Michael Merlyn Klein
  • Publication number: 20130248021
    Abstract: An actuator for an adjustable damping valve device includes an armature which has an axial valve stem. At least one spring loads the armature in a direction opposite to the magnetic armature force generated by a magnetic coil . The position of the valve stem is adjustable with respect to a defined valve position of the damping valve device. The spring loading the armature is supported at a spring bearing which is accessible via a housing wall of the actuator and which can be adjusted with respect to its axial position.
    Type: Application
    Filed: October 24, 2011
    Publication date: September 26, 2013
    Inventor: Andreas Förster
  • Publication number: 20130240061
    Abstract: A pressure relief valve for a hydraulic press tool comprises a valve body, a fluid return channel, a needle and a seat, and the needle is movable between a closed position, in which the needle is in contact with the seat to block the channel, and an open position, wherein the needle is at a distance from the seat to allow fluid to flow in the channel, and the fluid flow then causes movement of the seat away from the needle and completes the opening of the fluid return channel.
    Type: Application
    Filed: February 13, 2013
    Publication date: September 19, 2013
    Applicant: Stanley Works (Europe) GmbH
    Inventors: André RACAULT, Patrick VERVIER
  • Patent number: 8517703
    Abstract: A compressor hub assembly may include a hub member, a valve retainer and a valve member. The hub member may include first and second portions. The first portion may define an annular hub wall for a compressor and may have a first inner diameter. The second portion may have a second inner diameter greater than the first inner diameter and may define a stepped region between the first and second portions. The valve retainer may be fixed to the hub member at an end of the second portion opposite the stepped region and may define a third inner diameter. The valve member may be located between the valve retainer in the stepped region and may have an outer diameter less than the second inner diameter and greater than the first and third inner diameters.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: August 27, 2013
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Roy J. Doepker
  • Patent number: 8474479
    Abstract: A multifunction relief valve includes a relief chamber having an introduction port and a relief port for introducing and relieving pressure fluid; a back pressure chamber formed on one end side of the relief chamber; a piston which is movably provided in the back pressure chamber and divides the back pressure chamber into a first back pressure chamber and a second back pressure chamber; a first spring which is provided in the first back pressure chamber and exerts a biasing force in a direction in which the relief port is closed; a second spring which is provided in the second back pressure chamber and biases the piston in the direction in which the relief port is closed; and a pilot pressure supply port formed in the first back pressure chamber. The pressure fluid introduced into the first back pressure chamber via the pilot pressure supply port changes the relief pressure.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: July 2, 2013
    Assignee: Nabtesco Corporation
    Inventors: Teruhiko Yoshioka, Hideki Niwa
  • Publication number: 20130160875
    Abstract: A movable valve for a valve assembly is described. The present valve comprises a plug attached to an immovable mounting flange by at least two non-resilient spider-like legs comprising first and second rigid leg segments that meet at hinging apexes positioned higher than the plug. The plug resists vertical displacement by virtue of the stiff leg segments having appropriately configured curvature and length. Actuation of the valve is through vertical displacement of the plug against the biasing forces, wherein displacement of the plug causes bowing of the legs without any stretching or change in the length of the leg segments.
    Type: Application
    Filed: May 24, 2012
    Publication date: June 27, 2013
    Inventor: Gregory Schriner
  • Patent number: 8434508
    Abstract: A relief valve includes a valve body having a first port through which fluid flows in and a second port through which the fluid is discharged, a sleeve arranged so as to be slidable within the valve body and formed with an inlet being communicatable with the first port and an outlet being communicatable with the second port, a valve being slidable within the sleeve by receiving a fluid pressure of the first port flowing through the inlet in order to establish a closing state at which the outlet is closed by the valve and an opening state at which the outlet is opened, a biasing member applying a biasing force to the valve and a valve position adjusting mechanism actuated for operating the fluid pressure of the first port so as to act on the sleeve in a direction of the biasing force of the biasing member and changing the position of the sleeve relative to the valve body by turning on or off the operation of the fluid pressure of the first port so as to act on the sleeve.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: May 7, 2013
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Mitsuru Terada, Yuta Inoue
  • Patent number: 8375984
    Abstract: A pressure relief valve having a plurality of selectable, preset relief pressure settings for use in connection with hydraulic equipment. The pressure relief valve includes a manifold and a barrel fastened to the manifold. The manifold includes a chamber that houses a relief valve cartridge assembly, which includes a poppet valve. The barrel includes, a plurality of chambers, each of which houses a separate and distinct relief pressure load adjustment assembly, which includes a spring-loaded ball that engages the poppet valve. Each of the assemblies may be independently adjusted and preset to a desirable relief pressure load setting, which may be different from one another. The barrel is rotated relative to the manifold until the chamber housing the assembly that has the desired preset relief pressure load aligns with the chamber of the manifold, and, in turn, with the poppet valve.
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: February 19, 2013
    Assignee: Alcoa Inc.
    Inventor: Robert B. Wilcox
  • Patent number: 8365753
    Abstract: The present invention relates to a magnetic flow controller which transforms a slow reduction in pressure of fluid flow over time to a measurable fluid flow. Once a threshold pressure differential is reached, a flow passage through the flow controller opens rapidly to a relatively large opening, thereby generating a volume of fluid at high flux flowing through the passage, particularly to permit the measurement of the volume of fluid in a conventional flow meter. The device of the present invention integrates this low flux and transforms it to a measurable fluid flux, so that the fluid can be measured by the fluid meter within its optimum error range. This is accomplished while maintaining a pressure drop in the flow meter which is within the permitted standards. Thus, the invention provides relatively sharp shifts between substantially high flux flow and no flow, in a pulse-like manner.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: February 5, 2013
    Inventor: Yossi Dana
  • Patent number: 8316880
    Abstract: A bypass valve assembly for a generator includes a spring cover with a flange which extends in a radial direction from a spring cover body. The spring cover body defines an overall length dimension, the overall length dimension to an end of the spring cover body to the flange dimension defines a ratio between 1.6:1-1.2:1. The bypass valve assembly also includes a valve sleeve with a multiple of windows. Each of the multiple of windows includes a longitudinal edge which defines a longitudinal edge radius and corner radius.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: November 27, 2012
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Andrew P. Grosskopf, Glenn C. Lemmers, Jr., Craig R. Legros
  • Patent number: 8297943
    Abstract: A rotary positive displacement pump employs the higher pressure available at a region within the rotor chamber after the outlet port to augment the force of a biasing spring in a control system. A biasing spring with a lower spring force can thus be employed in the control system, resulting in a pump pressure output characteristic which can more closely match the operating speed varying working fluid requirements for devices supplied by the pump.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: October 30, 2012
    Assignee: Magna Powertrain, Inc.
    Inventors: David R. Shulver, Matthew Williamson, Adrian C. Cioc
  • Patent number: 8281804
    Abstract: Pressure relief valves are described herein. An example pressure relief valve includes a body having external threads to threadably engage another body having a pressurized chamber. Additionally, the pressure relief valve includes a relief valve orifice that is threadably engaged with the body via internal threads of the body. The relief valve orifice includes a seating surface. Further, the pressure relief valve includes a pressure-balanced piston assembly that is slidably movable within the body relative to the relief valve orifice and the seating surface to control the flow of fluid between the pressurized chamber and the relief valve orifice.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: October 9, 2012
    Assignee: Fisher Controls International LLC
    Inventors: Chun Lin, Roy Ronald Pelfrey
  • Publication number: 20120216885
    Abstract: A spring mounting cradle for an over-pressure valve assembly has integral valve-element camming surfaces provided adjacent the lower ends of a pair of the bent legs forming the cradle.
    Type: Application
    Filed: February 23, 2012
    Publication date: August 30, 2012
    Inventor: James W. Williams, III
  • Patent number: 8215336
    Abstract: A valve includes: a body including: a wall defining a process surface, a process void in the process surface adapted to communicate with fluid at process pressure, and at least two vent voids in the wall separate from the process void; an inlet port in fluid communication with the process void; and an outlet port in fluid communication with the vent void; a reference housing adapted to communicate with fluid at reference pressure; and a membrane constrained between the body and the reference housing with its process side substantially coplanar with the process surface. The process surface incorporates at least one groove therein which defines a flow path between the near vicinity of the process void and the near vicinity of the vent voids.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: July 10, 2012
    Inventor: Jeffrey D. Jennings
  • Publication number: 20120103441
    Abstract: A pressure control valve includes a housing comprising a reference pressure connection, a reference pressure chamber, a preliminary pressure connection, a preliminary pressure chamber, a control pressure connection and a control pressure chamber which are configured to cooperate with a control member moveable in an axial direction within the housing so as to adjust a desired control pressure between a preliminary pressure at the preliminary pressure connection and a reference pressure at the reference pressure connection. A driving device is configured to act on the control member. At least one first sealing device is configured to seal the reference pressure chamber against the control member. At least one second sealing device comprising a second sealing element is configured to seal the preliminary pressure chamber against the reference pressure chamber. At least one third sealing device is configured to seal the control pressure chamber against the preliminary pressure chamber.
    Type: Application
    Filed: May 19, 2010
    Publication date: May 3, 2012
    Applicant: PIERBURG GMBH
    Inventors: Werner Buse, Alvito Fernandes
  • Patent number: 8136544
    Abstract: A sealing apparatus adapted for use in a pressure vessel such as a synthesis gas cooler. The sealing apparatus is of a segmented plate construction formed around an outer wall section of a conduit means of the pressure vessel that defines at least part of a passage for receiving effluent from a gasification process. Pressure responsive mechanisms are provided on the plate segments to maintain the pressure difference across the sealing apparatus within the acceptable operating limits as well as to permit instantaneous pressure release to prevent damage to the pressure part assembly or cage. The seal is also maintained continuously through the differential growth movement between the conduit means and the pressure vessel during heat up and cool down cycles.
    Type: Grant
    Filed: August 15, 2007
    Date of Patent: March 20, 2012
    Inventors: Rickey A. Wilson, David L. Kraft, Steven R. Fry
  • Patent number: 7946290
    Abstract: An underwater exhaust system and method which includes an exhaust valve having a sealing edge, an exhaust outlet for exiting an exhaust gas, and a projection for directing water flow away from the exhaust valve. The exhaust valve includes a valve head and a valve stem, the valve stem being coupled with the valve head. The system and method prevent a siphoning effect, whereby leakage of water into the exhaust valve is minimized or prevented.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: May 24, 2011
    Assignee: Kirby Morgan Dive Systems, Inc.
    Inventors: William B. Morgan, Peter M. Ryan, Connie L. Morgan, Trent M. Schultz
  • Patent number: 7819131
    Abstract: A valve closure system particularly suited to reciprocating compressors employs no springs and preferably urges the valve in the closed direction by the force generated from magnets positioned to repel each other and in that manner deliver the force to keep the compressor valve closed. Other applications are envisioned and different techniques for replacing the spring component in such valve assemblies are also contemplated.
    Type: Grant
    Filed: February 14, 2005
    Date of Patent: October 26, 2010
    Assignee: Cameron International Corporation
    Inventor: James J. Walpole
  • Publication number: 20100243084
    Abstract: A multifunction relief valve 1 includes: a relief chamber 2 having an introduction port 7 and a relief port 8 for introducing and relieving pressure fluid; a back pressure chamber 3 formed on one end side of the relief chamber 2; a piston 4 which is movably provided in the back pressure chamber 3 and divides the back pressure chamber 3 into a first back pressure chamber 3a and a second back pressure chamber 3b; a first spring 5 which is provided in the first back pressure chamber 3a and exerts a biasing force in a direction in which the relief port 8 is closed; a second spring 6 which is provided in the second back pressure chamber 3b and biases the piston 4 in the direction in which the relief port 8 is closed; and a pilot pressure supply port 9 formed in the first back pressure chamber 3a. The pressure fluid introduced into the first back pressure chamber 3a via the pilot pressure supply port 9 changes the relief pressure.
    Type: Application
    Filed: March 24, 2010
    Publication date: September 30, 2010
    Applicant: NABTESCO CORPORATION
    Inventors: Teruhiko Yoshioka, Hideki Niwa
  • Patent number: 7631591
    Abstract: A valve arrangement includes a spool movable in first and second strokes. A first biasing member has a first spring constant and a first preload, and a second biasing member has a second spring constant lower than the first spring constant and a second preload higher than the first preload. The first biasing member and not the second biasing member biases the spool toward the center position through the entire first stroke and is deflected during movement of the spool from a center position to an intermediate position within the second stroke. The first and second biasing members are deflected during movement of the spool from the intermediate position to an end of the second stroke.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: December 15, 2009
    Assignee: Clark Equipment Company
    Inventors: William C. Shelbourn, Kyle D. Kaldor
  • Patent number: 7628169
    Abstract: A safety relief valve is provided that comprises a body comprising a chamber therein and an inlet and an outlet, the inlet comprising an inlet valve seat; a disk member closable on the inlet valve seat; and a mechanism in the body biasing the disk member to rest on the inlet valve seat with a set force such that when the pressure in the inlet exceeds a set pressure resulting from the set force, the disk member is lifted from the inlet valve seat, the mechanism comprising a combination of a coil spring and one or more disk springs stacked in series with the coil spring. A method of preparing a coil spring for use in a pressure relief valve comprises measuring the spring rate of the coil spring and; modifying the spring so as to modify its spring rate to be within ±2% of a desired spring rate.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: December 8, 2009
    Assignee: Mercer Valve Company, Inc.
    Inventors: Jeremy R. Choate, Michael J. Easton, Wesley L. Taylor
  • Patent number: 7552744
    Abstract: A pressure-relief valve has a flange formed with a throughgoing port. A spring plate spaced outward from the port is mounted on a rigid post fixing the spring plate relative to the flange. A valve body between the plate and the flange can shift between a closed position engaging the seal and closing the port and an open position spaced outward from the port and permitting flow through the port; A spring braced between the spring plate and the valve body urges the valve body into the closed position. A cup-shaped housing covering the valve body, spring plate, post, and springs has an end wall spaced from the flange and a side wall projecting from the end wall toward the casing and formed with a vent opening.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: June 30, 2009
    Assignee: Maschinenfabrik Reinhausen GmbH
    Inventors: Rainer Brill, Klaus Schlepp, Michael Weber, Georg Wittenzellner
  • Patent number: 7533692
    Abstract: A fluid-handling system that, in some embodiments, includes a poppet having a body, a magnet, and a mounting member configured to secure the magnet to the body is disclosed. Additionally, a method of forming a valve is disclosed.
    Type: Grant
    Filed: August 13, 2007
    Date of Patent: May 19, 2009
    Assignee: Cameron International Corporation
    Inventors: James J. Walpole, Zahroof Mohamed
  • Patent number: 7506663
    Abstract: A magnetic check valve includes a cage mountable in a fluid flow duct and supporting a plunger movable between a closed position blocking fluid flow past the valve, and an open position permitting fluid flow past the valve. One of the cage and the plunger includes a magnet, and the other of the cage and the plunger includes ferrous material magnetically attracted to the magnet to magnetically bias the plunger to the closed position.
    Type: Grant
    Filed: July 20, 2006
    Date of Patent: March 24, 2009
    Assignee: Fleetguard, Inc.
    Inventors: Chad M. Thomas, Abby True-Dahl, Peter K. Herman, Mark T. Wieczorek, Mark J. Johnson
  • Publication number: 20090032121
    Abstract: A check valve having two opposing springs to hold a ball or stopper a pre-determined distance from the valve seat so that the ball or stopper seats against the valve seat only under backflow pressure.
    Type: Application
    Filed: July 31, 2007
    Publication date: February 5, 2009
    Inventor: James Y. Chon
  • Patent number: 7458392
    Abstract: A check valve is for use in a fluid system. A valve body has an inlet end, a valve cavity, and an outlet end. A valve enables a valve assembly to control the flow of fluid therethrough. A plug of the valve assembly includes tapered and non-tapered sections, the tapered section having a cross section that increases in diameter in a direction that is downstream from the inlet end of the valve body. A sealing ring is mounted to reciprocate on the non-tapered section and an elastomeric actuation ring is mounted along the tapered section. The tapered section biases the actuation ring to a normal position, at which the actuation ring contacts and positions the sealing ring in contact with the valve body and the valve assembly to prevent fluid from flowing out the outlet end of the valve body.
    Type: Grant
    Filed: September 13, 2005
    Date of Patent: December 2, 2008
    Assignee: R. Conrader Company
    Inventor: James P. Cornwell
  • Patent number: 7398795
    Abstract: An excess flow valve includes: a valve that opens and closes a flow path; a solenoid that keeps the valve in an opened state; a pressure detector detecting the primary-side pressure of the valve; and a controller controlling current flow to the solenoid based on pressure detected by the pressure detector so that the valve is closed when the flow rate supplied to the valve is at or more than a predetermined amount. The excess flow valve can be used in a wide variety of applications and prevents a flow of fluid at or greater than a desired flow rate even if the primary-side supply pressure varies.
    Type: Grant
    Filed: March 21, 2005
    Date of Patent: July 15, 2008
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventors: Hiroaki Suzuki, Toshihiko Shima, Yoshiyuki Takeuchi
  • Patent number: 7334603
    Abstract: A check valve has an elastic valve body portion and an inelastic valve body portion and a valve seat. The valve body is fixed to a valve shaft, and a valve body abutment plate for abutting the elastic valve body portion is supported to the valve shaft. The valve body abutment plate includes an elastic valve body portion pressing portion for pressing on an outer peripheral portion of the elastic valve body portion and a backflow fluid pressure exerting hole for causing fluid pressure from the fluid outlet side to be exerted on the elastic valve body portion. A spring for urging the valve body into abutment with the valve seat through the valve body abutment plate is interposed between the valve body abutment plate and a shaft support portion provided on the fluid outlet side.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: February 26, 2008
    Assignee: Miura Co., Ltd.
    Inventor: Tomohisa Takeda
  • Publication number: 20080017256
    Abstract: A magnetic check valve includes a cage mountable in a fluid flow duct and supporting a plunger movable between a closed position blocking fluid flow past the valve, and an open position permitting fluid flow past the valve. One of the cage and the plunger includes a magnet, and the other of the cage and the plunger includes ferrous material magnetically attracted to the magnet to magnetically bias the plunger to the closed position.
    Type: Application
    Filed: July 20, 2006
    Publication date: January 24, 2008
    Inventors: Chad M. Thomas, Abby True-Dahl, Peter K. Herman, Mark T. Wieczorek, Mark J. Johnson
  • Patent number: 7310942
    Abstract: Exhaust passage control valve 10 may comprise housing 30, valve member 20, and helical torsion spring 40. Housing 30 has an exhaust passage. Exhaust gas from an internal combustion engine flows through the exhaust passage of the housing 30. Valve member 20 opens and closes the exhaust passage of the housing. Helical torsion spring 40 may be disposed at the opposite side of the valve member from the housing side thereof. Helical torsion spring 40 comprises a coil part wherein spring wires have been wound in a coil shape, and arms formed at both ends of the coil part. The coil part may be disposed at approximately the center of the valve member. When the arms bend with respect to the coil part, the counter-force of this bending energizes the valve member towards a closing side. The spring mounting member may be arranged and constructed to adjust a position in which the spring mounting member is mounted on the housing such that a rotation angle of the arms can be changed.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: December 25, 2007
    Assignees: Chuo Hatsujo Kabushiki Kaisha, Sakamoto Industry Co., Ltd.
    Inventors: Hiroyuki Shiga, Shouji Ichikawa, Tatsuhiro Nagashima, Hiroshi Ogura