Supply And Exhaust Type Patents (Class 137/102)
  • Patent number: 9765594
    Abstract: A method of stimulating a subterranean formation using a tubular member with one or more burst disks therein.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: September 19, 2017
    Assignee: DRECO ENERGY SERVICES ULC
    Inventors: Scott Sherman, Robert Pugh, Sean Majko, Steve Scherschel
  • Patent number: 9725995
    Abstract: Applicants have created systems, methods, and apparatuses for increasing the production of fluid from a subterranean well. The system can include a controller and upper and lower portions. The upper portion can include an injection valve for regulating the amount of a first gas injected into an injection conduit. The lower portion can include a chamber valve for regulating the flow of a second gas through an upper tubing string and a vent valve for regulating the flow of the first gas and a standing valve. The collected fluid creates pressure in the lower portion causing the second gas to flow from the lower tubing string to the upper tubing string. The controller controls the injection valve and is coupled to a pressure gauge for measuring pressure in the lower portion. With the aid of this system, well operators can increase production of subterranean well formations, such as gas wells, without increasing backpressure on those formations.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: August 8, 2017
    Assignee: Lufkin Industries, LLC
    Inventors: Samuel Wildman, Joseph Glasofer, John McCrady, Ricardo Lopez
  • Patent number: 9718089
    Abstract: An intermediate piece includes an upper element and a lower element, and a check valve including a head and a spring element exerting an opening pressure on the head. The check valve is arranged between the upper element and the lower element at the first or second passage and is configured such that a first or second passage can be closed by the check valve and such ay that the first or second passage is opened when a dispensing pressure counteracting the opening pressure is applied at least at the respective flowable component.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: August 1, 2017
    Assignee: SULZER MIXPAC AG
    Inventor: Andreas Hiemer
  • Patent number: 9678513
    Abstract: A fluid regulating unit includes a body, a pressure regulator, and a control valve. The body has an inlet, an outlet configured to output a regulated flow of fluid, and a flow path defined between the inlet and the outlet. The body integrates a pressure regulator and a control valve, each of which is disposed in the flow path. The pressure regulator has a regulator body, a control assembly configured to control a fluid flow through the regulator body, a sensor operatively coupled to the control assembly to control a position of the control element, and a bonnet movably coupled to the regulator body. The regulator body and the bonnet define a reference chamber disposed in the flow path. The reference chamber is configured to apply a reference force to the sensor to control the fluid flow through the regulator body.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: June 13, 2017
    Assignee: TESCOM CORPORATION
    Inventors: Eric J. Burgett, Matthew Whitaker
  • Patent number: 9671794
    Abstract: A safety valve control system may include a remotely operable control assembly, a first transducer, a valve assembly, and a compressor assembly in communication with the control assembly. The control assembly is operable to actuate the pump and valve assemblies to supply fluid to actuate the safety valve into open and closed positions, in response to one or more signals received from the first transducer. A method of operation may include maintaining the safety valve in an open or closed position while sensing a physical property with the control system; communicating a signal corresponding to the sensed physical property to the control system; and automatically closing or opening the safety valve in response to a comparison of the sensed physical property to a pre-set condition.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: June 6, 2017
    Assignee: SAFOCO, INC.
    Inventors: David Lymberopoulos, Benjamin R. Matthews
  • Patent number: 9663344
    Abstract: An apparatus is for a hazardous-fluid delivery vehicle configured to convey a hazardous fluid, and for a storage tank configured to receive the hazardous fluid. The apparatus includes a fluid-input section configured to fluidly connect with the hazardous-fluid delivery vehicle. A valve assembly is in fluid communication with the fluid-input section. A fluid-output section is configured to fluidly connect the valve assembly with the storage tank. A valve actuator is operatively coupled to the valve assembly. The valve actuator is configured to actuate the valve assembly between a valve-closed state and a valve-opened state for the case where the valve actuator receives an actuation signal from an operator that is situated at a predetermined safe distance from the valve assembly. The predetermined safe distance is located proximate to the control section of the hazardous-fluid delivery vehicle.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: May 30, 2017
    Inventor: Neal Antero Makkonen
  • Patent number: 9624922
    Abstract: A pressure monitoring device for use in an air system of a vehicle and for controlling a compressor comprises an input air connector for connection to an air tank and for receiving an input pressure from the air tank. A first signal air connector can output a pneumatic ON-load signal for adjusting the compressor to an operation mode. A second signal air connector can output a pneumatic OFF-load signal for adjusting the compressor to a non-operation mode.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: April 18, 2017
    Assignees: WABCO EUROPE BVBA, WABCO COMPRESSOR MANUFACTURING CO.
    Inventors: Folkhard Holzel, Michael Klatt, Ramesh Pai
  • Patent number: 9592321
    Abstract: An apparatus and method for hydrating a particulate biomaterial with a liquid biomaterial includes a vacuum device and a valve for withdrawing a gas from the particulate biomaterial and introducing the liquid biomaterial. The valve includes a hub, a valve body, a particulate port, a vacuum port, and a liquid port. The valve body selectively moves between first and second positions. The valve body at least partially defines a first passage and a second passage. The particulate port, the vacuum port, and the liquid port are each configured to fluidly connect to a particulate container, the vacuum device, and the liquid container, respectively. In the first position, the first passage fluidly connects the vacuum port to the particulate port for withdrawing the gas from the particulate container. In the second position, the second passage fluidly connects the liquid port to the particulate port for hydrating the particulate biomaterial.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: March 14, 2017
    Assignee: NORDSON CORPORATION
    Inventors: Benjamin B. Anderson, Kevin C. Geppert, Thomas A. Kirk, Huadong Lou, Mark Stevenson
  • Patent number: 9580995
    Abstract: Systems and methods for controlled equalization of fluid pressure are described. The system can include a flow restricting nozzle in line with an accumulator which together provide a gradual, controlled equalization of pressure between two locations. For example, in the subsea environment, the pressures can vary between a subsea processing station and a subsea flow line. The systems can be configured as ROV retrievable, or they can be integrated into the subsea processing station. In some cases, more than one accumulator and/or more than one flow restricting nozzles can be used in the system to provide for versatility and robustness.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: February 28, 2017
    Assignee: OneSubsea IP UK Limited
    Inventor: Stig Kaare Kanstad
  • Patent number: 9582007
    Abstract: A fluid pressure regulator has a high pressure side and a low pressure side separated by a plunger. The plunger is biased against fluid pressure on the low pressure side. The fluid pressure on the low pressure side in opposition to the biasing means moves a primary passage through the plunger into and out of flow communication with fluid on the high pressure side under normal conditions. A fine passage through the plunger moves into and out of flow communication with fluid on the high pressure side under start-up conditions.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: February 28, 2017
    Inventor: Louis P. Vickio, Jr.
  • Patent number: 9573428
    Abstract: A valve assembly including a base portion and a cap portion attached to the base portion. The valve assembly also includes a biasing member disposed between the base portion and the cap portion. The biasing member is adjacent a perforation formed in the cap portion. A shuttle assembly is in contact with the biasing member. The shuttle assembly includes a shuttle and a plug member. The plug member is attached to the shuttle.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: February 21, 2017
    Assignee: Dana Heavy Vehicle Systems Group, LLC
    Inventors: Jason M. Sidders, Lloyd G. Racine
  • Patent number: 9534519
    Abstract: A variable displacement vane pump has a pressure controlled valve moveable between first and at least second valve positions based on an output pressure of the pressurized lubricant delivered through the outlet. The pressure controlled valve provides an integrated fail safe function to the pump when an electrical valve fails. The pressure controlled valve is inactive in the first position for an output pressure below a threshold level, allowing an electrical valve (pulse width modulation (PWM) valve) to selectively control pressure in the control chamber under normal operation of the pump. In fail safe regulation mode, the electrical valve function is disabled and the pressure controlled valve is active in its second position, controlling pressure in the control chamber. Channels and vents in the pump can be opened and closed based on selective movement of the valve when the outlet pressure is at or above a threshold level.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: January 3, 2017
    Assignee: STACKPOLE INTERNATIONAL ENGINEERED PRODUCTS, LTD.
    Inventor: Ralph Valkenberg
  • Patent number: 9453462
    Abstract: A piston has a closure face closing off a cavity defined radially inwardly and downstream of an upstream end. The closure face is spaced from the upstream end by a first distance. The piston has a cavity extending in a downstream direction away from an opposed side of the closure face to a second end. A piston diameter is defined to an outer periphery of a cylindrical portion forming a seal face. A ratio of the piston diameter to the first distance is between 3.05 and 6.31. A valve sleeve has windows formed to allow flow of fluid from a sleeve internal bore through the windows and to a downstream port. A ratio of the inner diameter to the axial dimension of the windows is between 0.91 and 1.02. A ratio of the inner diameter to a circumferential dimension of the windows is between 1.55 and 1.85.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: September 27, 2016
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Aaron Rickis
  • Patent number: 9404596
    Abstract: A multifunctional check valve device contains: a base, an elastic member, and a locking member. The base includes a peripheral rib, an accommodating chamber, a column, a stopping face, a connecting orifice, a plurality of through orifices, a first outlet, and a positioning groove. The elastic member includes a fixing loop for retaining with the connecting orifice and a closing disc for corresponding to a second outlet of a pull-out faucet. An outer diameter of the closing disc is greater than an inner diameter of the closing disc, so the closing disc closes an inner face of an exit. The closing disc has a retaining tab for retaining with the positioning groove. The hollow locking member includes inner threads for screwing with outer threads of the pull-out faucet and accommodates the base. The hollow locking member also includes a third outlet for aligning with the first outlet of the base.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: August 2, 2016
    Inventor: Bao-Tang Chen
  • Patent number: 9326826
    Abstract: A gas pressure monitor system for a pneumatically-powered surgical machine includes a first transducer, a second transducer, and a controller. The first transducer is located upstream from a filter and is configured to read a first pressure of a gas before the gas enters the filter. The second transducer is located downstream from the Filter and is configured to read a second pressure of a gas after the gas exits the filter. The controller is configured to compute a difference between the first pressure and the second pressure. A state of the filter is determined from the difference between the first pressure and the second pressure.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: May 3, 2016
    Assignee: Novartis AG
    Inventors: Denis Turner, Robert Palino
  • Patent number: 9308788
    Abstract: A pneumatic device can include a hollow body including an intake aperture controlled by a system for injecting a gaseous fluid under pressure, an inflation aperture in communication with a tire at an initial pressure, and an exhaust aperture for venting the fluid externally. The pneumatic device can include a piston fitted so as to slide within at least one chamber of the body under the effect of the injection of the fluid via the intake aperture, the piston interoperates with a mobile assembly in combination with an exhaust flap valve to control inflation and deflation of the tire.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: April 12, 2016
    Inventor: Stéphane Fazekas
  • Patent number: 9302091
    Abstract: A pressure-maintaining valve assembly can be coupled to the tubing of an infusion pump system. The valve assembly includes an element that regulates fluid flow through the tubing. This element may also act as a one way or check valve.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: April 5, 2016
    Assignee: CareFusion 303, Inc.
    Inventors: Robert Dwaine Butterfield, Andre Gamelin, Neil Quitoviera, Daniel Abal
  • Patent number: 9133943
    Abstract: A flow path switching valve has an injection side portion formed with an injection chamber and an outer valve seating surface, and a discharge side portion provided with a partition member formed with an inner valve seating surface. A discharge control block communicating with a discharge chamber is formed with a control flow path which is increased and decreased in volume by a discharge rod. To fill the control flow path with grease, a valve element closes an inner flow path and opens an outer flow path. On the other hand, to discharge the grease in the control flow path to the discharge chamber, the valve element closes the outer flow path and opens the inner flow path. After being supplied to the control flow path, the grease is supplied to the discharge chamber.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: September 15, 2015
    Assignees: Koganei Corporation, Canon Kabushiki
    Inventors: Yuta Ohmura, Youhei Edagawa, Susumu Murata
  • Patent number: 9103562
    Abstract: A representatively pumpless water heater system has an instantaneous water heater coupled in series with a storage water heater by piping circuitry incorporating a fixed (and selectively fixed) bypass useable to route pressurized incoming cold water sequentially through the instantaneous and storage type heaters. The fixed bypass can also route pressurized incoming cold water to mix with the heated water exiting the instantaneous heater for delivery to the storage heater.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: August 11, 2015
    Inventors: Daichi L Nakagawa, Kevin J Pirotin
  • Patent number: 9052715
    Abstract: A flow rate controller is disclosed that maintains constant flow rate with changes in pressure drop across the valve by maintaining a constant pressure drop across a restrictor with the aid of a spring balanced piston that mates a cone to a seat to dissipate the majority of pressure drop across the valve.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: June 9, 2015
    Assignee: SKO FLO Industries, Inc.
    Inventors: Mark W. Kirchner, Gilbert Jones
  • Publication number: 20150107686
    Abstract: An oil pump includes a relief valve. The relief valve adjusts a pump discharge pressure depending on a differential pressure between the pump discharge pressure and a back pressure chamber pressure. An electromagnetic switching valve includes a movable member moved electromagnetically. The movable member brings a ball valve element selectively into a state pressed onto a valve seat portion, to selectively close and open an oil passage. The electromagnetic switching valve selectively supplies the pump discharge pressure to a back pressure chamber of the relief valve and drains the back pressure chamber of the relief valve by selectively opening and closing the oil passage. A pilot valve is disposed downstream of the electromagnetic switching valve, and operates upon receipt of the pump discharge pressure or the back pressure chamber pressure, and controls an oil pressure supplied to the back pressure chamber of the relief valve.
    Type: Application
    Filed: October 17, 2014
    Publication date: April 23, 2015
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Yasushi WATANABE, Hideaki OHNISHI
  • Publication number: 20150101676
    Abstract: A valve block includes a plurality of control valve disks that form a first block part and a second block part. A supply pressure for the control valve disks of the first block part is limited by a common pressure-limiting valve. The common pressure-limiting valve is arranged such that a prevailing load pressure registered by the control valve disks does not exceed a specific value. The supply pressure for the control valve disks of the second block part is not limited.
    Type: Application
    Filed: October 15, 2014
    Publication date: April 16, 2015
    Inventor: Steffen Knapper
  • Patent number: 8931577
    Abstract: A valve comprises a housing including a first chamber, a second chamber, and a neutral chamber. In addition, the valve comprises a stem disposed within the housing. Further, the valve comprises a first valve member at least partially disposed in the first chamber and connected to the stem and a second valve member at least partially disposed in the second chamber and connected to the stem. The first valve member has a closed position seated in a first annular valve seat and an open position spaced apart from the first valve seat. The second valve member has a closed position seated in a second annular valve seat and an open position spaced apart from the second valve seat. Moreover, the valve comprises a biasing member configured to bias the second valve member to the closed position and the first valve member to the open position.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: January 13, 2015
    Assignee: Cameron International Corporation
    Inventor: Nicolas Arteaga
  • Publication number: 20140373935
    Abstract: A gas branched flow supplying apparatus for semiconductor manufacturing equipment. An arithmetic and control unit 7 works to successively open the respective branched pipe passage opening/closing valves 10a, 10n for a predetermined time and then close the valves, and the gas branched flow supplying apparatus performs flow control of the process gas distributed through the orifice 6 by the pressure type flow control unit 1a, and branches and supplies the process gas by opening and closing the branched pipe passage opening/closing valves 10a, 10n.
    Type: Application
    Filed: October 17, 2012
    Publication date: December 25, 2014
    Applicant: Fujikin Incorporated
    Inventors: Kouji Nishino, Ryousuke Dohi, Nobukazu Ikeda, Kaoru Hirata, Kazuyuki Morisaki
  • Publication number: 20140366955
    Abstract: A regulator for controlling operation of a drill thrust actuator and a drill rotation actuator in a roof bolter, is provided. The regulator includes a first pressure relief unit, a second pressure relief unit and a flow control valve. The first pressure relief unit is configured to selectively allow a hydraulic fluid to pass to the drill thrust actuator. The second pressure relief unit is configured to selectively allow the hydraulic fluid to pass to the drill rotation actuator. Further, the flow control valve is configured to selectively adjust a flow of the hydraulic fluid to the drill rotation actuator.
    Type: Application
    Filed: June 13, 2013
    Publication date: December 18, 2014
    Inventor: Jeffrey D. Looney
  • Patent number: 8813769
    Abstract: A device for putting in solution a powdery concentrate includes a liquid supply pipe (10), an extraction pipe (30) with a valve (31), and a transfer pipe (40) connected to a junction point, the transfer pipe being for connecting to a receptacle (50) containing the concentrate. The junction point is in the constriction of a venturi tube (20), the supply pipe (10) being connected to the convergent chamber (21) and the extraction pipe (30) to the divergent chamber (22). If the valve (31) is closed, the liquid leaves the venturi tube through the vacuum tapping to enter the receptacle. When the valve (31) is opened, the liquid leaves the venturi tube through the divergence chamber, causing a pressure drop in the vacuum tapping. The saturated liquid contained in the receptacle is then sucked and entrained by the liquid passing through the venturi.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: August 26, 2014
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Paul Gastauer, Philippe Laffay, Benoit Luaire
  • Patent number: 8807961
    Abstract: An apparatus is provided and may include a control valve that moves a pressure-responsive unloader valve between a first position permitting flow through a valve plate and into a compression mechanism and a second position restricting flow through the valve plate and into the compression mechanism. The control valve may include at least one pressure-responsive valve member movable between a first state supplying discharge-pressure gas to the unloader valve to urge the unloader valve into one of the first position and the second position and a second state venting the discharge-pressure gas from the unloader valve to move the unloader valve into the other of the first position and the second position.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: August 19, 2014
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Frank S. Wallis, Mitch M. Knapke, Ernest R. Bergman
  • Patent number: 8714176
    Abstract: The invention provides a protection system for a fluid compartment of variable volume. The protection system comprises a detection means for detecting when the volume of the fluid compartment is outside a predetermined acceptable limit. The protection system also comprises a valve arrangement mountable on at least one port that is in selective fluid communication with the fluid compartment. The protection system further comprises an actuator, wherein the detection means is coupled to the valve arrangement via the actuator. When the detection means detects that the volume of the fluid compartment is outside the predetermined limit, the actuator causes the valve arrangement to change state and alters the volume of the fluid compartment. The protection system can be used with a compensator to protect a movable part of the compensator from damage.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: May 6, 2014
    Assignee: Subsea 7 Limited
    Inventors: Gareth Ian Kerr, John Arthur Mair
  • Patent number: 8695623
    Abstract: A gas concentration control device for pressure vessel is provided for controlling gas concentration inside an accommodation space that is set in an interior of a chamber formed inside a pressure vessel curing oven. The pressure vessel curing oven includes a gas inlet tube with a first valve and a gas outlet tube with a second valve, which are in communication with the accommodation space. The gas concentration control device includes a gas concentration detection device, which is operative for timed detection of concentration of a gas inside the accommodation space, and a control unit for setting a predetermined concentration, performing a judgment if the gas concentration inside the accommodation space reaches the predetermined concentration according to a detection result of the gas concentration detection device, and thereby controls the first valve and the second valve according to result of the judgment.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: April 15, 2014
    Assignee: Ableprint Technology Co., Ltd.
    Inventor: Horng Chih Horng
  • Patent number: 8695636
    Abstract: A one piece double membrane diaphragm including an upper (308) and lower diaphragm membrane (310) joined together by a central section (312) is provided. The upper diaphragm membrane (308) seals against a top sealing surface (222) when the diaphragm is in a first position. The lower diaphragm membrane (310) seals against a bottom sealing surface (224) when the diaphragm is in a second position. The diaphragm may also be made from a resilient material and shaped in such a way as to create a spring force holding the diaphragm into a default position in the valve.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: April 15, 2014
    Assignee: Norgren GmbH
    Inventors: Daniel Kuhnle, Stefan Pfund
  • Patent number: 8678025
    Abstract: A method and apparatus to control pressure in a fluid delivery system utilizes a variable-pressure regulating means and a flow-controlled selecting means to provide a higher pressure when the flow in the system is higher, and to provide a lower pressure when the flow in the system is lower. It exploits an inherent signal that is generated and transmitted by the fluid, and which enables remote control of the pressure. Useful, for example, to provide pressure control for a garden hose fitted with a closeable nozzle, wherein full pressure is provided through the hose when the nozzle is open, lower pressure is maintained when the nozzle is closed, and the operator controls pressure in the hose from the fluid delivery end of the hose, protecting the hose from bulging or splitting, making the hose easier to handle, and conserving water. Other applications include protecting washing machine supply hoses from bursting and flooding; and pressure control of fire sprinkler, compressed gas, and pneumatic control systems.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: March 25, 2014
    Inventor: Douglas Quinten Kitt
  • Patent number: 8544490
    Abstract: A valve comprising an inlet port, an outlet port, an exhaust port and a diaphragm disposed between the inlet and exhaust ports which is moveable, in response to air pressure within the valve, between a first position in which it seals the exhaust port and a second position in which the exhaust port is open, there being one or more projections associated with the exhaust port on which the diaphragm is able to rest in its first position.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: October 1, 2013
    Assignee: Haldex Brake Products Ltd.
    Inventor: Ian Martin Cottom
  • Patent number: 8474480
    Abstract: A spool valve is formed from a spool having two adjacent lands of equal cross-sectional dimensions, and a third land having greater cross-sectional dimensions than the other two. The spool reciprocably moves through a bore formed in a housing, so as to open and close fluid communication between selected pairs of ports formed in the housing. The bore includes a first chamber which receives the third land of the spool and has no externally communicating port formed in its walls. The spool valve may be used as a control valve for the actuator of a system valve. As the spool valve begins to actuate, the third land becomes exposed to actuator pressure. The greater area of the third land serves to increase the force applied to the spool valve by the actuator pressure source, enhancing protection from unintended or malicious resetting of the spool.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: July 2, 2013
    Assignee: BS&B Safety Systems Limited
    Inventor: Gary W. Scantlin
  • Patent number: 8469047
    Abstract: Embodiments of the present invention are directed toward pressure controllers and calibrators for setting or measuring pressures in test devices. In one embodiment, the pressure controller contains a dual reference pressure controller. The dual reference pressure controller is operable to maintain two different pressures relative to a reference pressure. The first pressure being a relatively fixed amount greater than the reference pressure and the second pressure being a relatively fixed amount less than the reference pressure.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: June 25, 2013
    Assignee: Fluke Corporation
    Inventors: Pierre R. Delajoud, Robert B. Haines, Thomas A. Lohkamp
  • Patent number: 8453647
    Abstract: A device for passive pressure relief and for reducing the volume flow for an electromechanically driven medical gas delivery means (50) in a medical device for respirating a patient (60) with a pressure relief unit (1) with a first and second gas port (2, 3), with a relief valve (4), with a pressure relief outlet (8) with an equalization space (9) and with a nonreturn valve (11) and a valve disk (5), which is arranged in the relief valve (4) and is maintained in a position relative to a valve seat (7) via a bellows (60). The surfaces (51, 52) facing the first and second gas ports (2, 3) have different areas, so that the relief valve (4) opens as soon as an operating pressure (23) at the first gas port (2) exceeds a prevailing (stored) pressure level (24) in the equalization space (9).
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: June 4, 2013
    Assignee: Dräger Medical GmbH
    Inventor: Renè-Christian Caspary
  • Patent number: 8408232
    Abstract: A sequence valve for a hydraulic circuit provides a control signal through a control signal port to a pressure responsive flow source to maintain pressure in an accumulator between a low pressure setting and a high pressure setting. The valve includes accumulator, flow source and drain ports, in addition to the control signal port. A spool controls communication between the control signal port and the drain port. A piston is moved by pressure in the accumulator port against a control spring to close communication between the control signal port and the flow source port, and to move the valve spool to close communication between control signal port and the drain port. A differential between the net cross sectional area of the spool establishes the differential between the high and low pressure settings of the accumulator.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: April 2, 2013
    Assignee: Parker Hannifin Corporation
    Inventors: Eric Ray Schisler, J. Eric Haggard
  • Patent number: 8365731
    Abstract: A pressure reducing valve for use in a system adapted to deliver a breathing gas to a patient. The pressure reducing valve is structured to communicate a flow of breathing gas to such a patient's airway during an inspiratory phase. The pressure reducing valve is structured to discharge the flow of breathing gas and a flow of exhaled gas to atmosphere during the expiratory phase. The flow of breathing gas and flow of exhaled gas are discharged to atmosphere through a number of exhaust ports. Because the flow of breathing gas and flow of exhalation gas are discharged through the exhaust ports, less effort is required by a patient during the expiratory phase.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: February 5, 2013
    Assignee: Ric Investments, LLC
    Inventors: Peter Chi Fai Ho, Lance Busch
  • Patent number: 8336571
    Abstract: A valve assembly is provided. The valve assembly comprises a housing having an inlet, a first outlet, and a passageway extending therebetween, the passageway having a first inner diameter at the inlet and a second inner diameter at the first outlet, a first poppet valve disposed in, and adapted to selectively seal, the inlet, a second poppet valve disposed in, and adapted to selectively seal, the first outlet, the second poppet valve coupled to the first poppet valve, and a biasing member coupled to the second poppet valve, the biasing member adapted to exert a force sealing the second poppet valve.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: December 25, 2012
    Assignee: Honeywell International Inc.
    Inventors: Kenneth Roberts, Gary Graham, Todd Garrod, David Segura
  • Patent number: 8333330
    Abstract: Systems and methods for using a dual-path fluid routing system that uses a flow restriction device to enhance temperature and pressure control of fluid are provided. Systems and methods for using a setpoint pressure control system to accurately control the setpoint pressure of a regulator are also provided.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: December 18, 2012
    Assignee: Active Power, Inc.
    Inventors: Karl T. Schuetze, Robert S. Hudson
  • Patent number: 8240334
    Abstract: An arrangement for metering a gaseous sample in a carrier gas stream has a sample gas path and a carrier gas path, both paths being connected to a carrier gas source. By introducing different pressures into the sample gas path and the carrier gas path, a metered amount is extracted from a sample slug and diverted into the carrier gas stream via a connection gas path through the carrier gas path. The sample gas path has two flow resistances in front of and behind a branch point of a connection gas path. One resistance lies between the carrier gas source and a metering unit and a gas volume of the sample gas path between the branch point of the connection gas path and the other flow resistance is dimensioned such that the sample slug only reaches the second resistance after extraction and diversion of the metered amount.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: August 14, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventor: Udo Gellert
  • Patent number: 8205632
    Abstract: A fluid flow control device such as a volume booster has an inlet, an outlet and an exhaust port all for an operating fluid. A pilot inlet receives a pilot pressure signal which operates a valve stem actuator via a diaphragm assembly. The valve stem is operable to open a supply valve between the inlet and outlet and, separately and independently, to open an exhaust valve disposed between the outlet and the exhaust. In a further position both the valves are closed. Movement of the stem in a reciprocal manner by the diaphragm assembly causes a respective annular shoulder to engage a respective valve and lift it off a valve seat against the force of a biasing spring. A first fluid leak path is provided between the valve stem and the supply valve for allowing fluid to leak through the supply valve chamber when the supply valve is open and a second fluid leak path is defined by the exhaust valve for allowing fluid to leak through the exhaust valve chamber.
    Type: Grant
    Filed: May 2, 2008
    Date of Patent: June 26, 2012
    Assignee: BiFold Fluidpower Limited
    Inventor: James Fishwick
  • Patent number: 8162000
    Abstract: A pneumatic system for a surgical machine includes a reservoir, first and second proportional valves, and a controller. The reservoir holds pressurized gas. The first proportional valve is located on an input side of the reservoir and allows a variable amount of pressurized gas to enter the reservoir. The second proportional valve is located on an output side of the reservoir and allows a second variable amount of pressurized gas to exit the reservoir. The controller controls the operation of the first and second proportional valves. The controller adjusts the first and second proportional valves so that a constant gas pressure range is maintained at an output of the reservoir over a first range of input gas pressures and a second range of gas usage.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: April 24, 2012
    Assignee: Novartis AG
    Inventors: Denis Turner, Argelio Olivera, John Huculak, Mark Hopkins
  • Patent number: 8156953
    Abstract: The present invention relates to a method for regulating a pressure in a hydraulic system for operating at least one actuator in a subsea installation, having a fluid supply line (102) connected to a source of pressurized fluid (101) at a remote location delivering fluid at a constant pressure to the subsea installation, comprising first and second control valves (103, 105) controlled by an electronic control unit (107), and at least one pressure sensor (106) and an accumulator (104) arranged between the first and second control valve (103, 105), where the pressure in the fluid supply line (102?) to the actuator is regulated by regulating the pressure in the accumulator (104) by adding fluid from the source of pressurized fluid (101) through the first control valve (103) if the pressure is too low or releasing pressure through the second control valve (105) to a fluid return line (120) if the pressure is too high and thereby establishing the desired pressure for operating the actuator.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: April 17, 2012
    Assignee: FMC Kongsberg Subsea AS
    Inventor: Johannes Tore Tveita
  • Publication number: 20120024557
    Abstract: A portable pneumatic power wrench has a housing with a handle, a motor, a pressure air inlet passage, and an outlet passage for ducting exhaust air from the motor out of the housing. An outlet unit is connected to the outlet passage and has a first outlet opening section forming a main exhaust air flow path, a second outlet opening section forming an additional exhaust air flow path, and a manually operable valve arranged to control the additional exhaust air flow path by opening or closing the second outlet opening section. The total outlet flow area of the main exhaust air flow path and the additional exhaust air flow path gives an augmented torque output of the power wrench.
    Type: Application
    Filed: March 24, 2010
    Publication date: February 2, 2012
    Applicant: Atlas Copco Tools AB
    Inventor: Knut Christian Schoeps
  • Patent number: 8056576
    Abstract: A hydraulic valve has a valve body with a bore into which an inlet port, an outlet port, and a workport all open. A valve spool is slideably received within the bore. The valve spool has a first position that provides a path between the inlet port and the workport, and a second position that provides another path between the outlet port and the workport. Inlet port pressure tends to move the valve spool into the first position and outlet port pressure tends to move the valve spool into the second position. A linear actuator is coupled to the valve spool by a spring, thereby biasing the valve spool toward the first position. Another spring biases the valve spool toward the second position.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: November 15, 2011
    Assignee: HUSCO Automotive Holdings LLC
    Inventor: Curtis Lee Van Weelden
  • Patent number: 7997295
    Abstract: A supplementing water supply controller which provides water from a supplementing water supply to an outlet in preference to a main water supply, wherein if there is insufficient supplementing water to meet demand, the main water supply flows through the controller to the outlet, whereas if there is sufficient supplemental water to meet the demand, a supplementing water pump is activated and the pressure of the supplementing water is raised above a threshold level at which it moves an actuator mounted by two diaphragms to block the main water supply, so that the supplementing water can flow to the outlet. The actuator has a larger effective area at its low pressure end than at its high pressure end, so that the supplementing water threshold pressure level for moving the actuator to block the main water supply is less than the main water pressure.
    Type: Grant
    Filed: July 22, 2005
    Date of Patent: August 16, 2011
    Assignee: Davey Products Pty Ltd
    Inventors: Rodney James Brown, Da-Wei Zhang
  • Patent number: 7975715
    Abstract: A valve for use in a pneumatic system of a truck-trailer having a source of air under pressure, a reservoir, at least one spring brake unit and a brake service line is provided. The valve includes a housing, a pressure protection valve portion, a spring brake actuation valve portion and an anti-compounding valve portion. The housing has a supply passage in communication with the source of air under pressure. The pressure protection valve portion is disposed within a first chamber of the housing. The first chamber has an inlet in communication with the supply passage and an outlet in communication with the reservoir. The pressure protection valve portion is configured to selectively block the flow of pressurized air from the supply passage to the reservoir through the first chamber. The spring brake actuation valve portion is disposed within a second chamber of the housing.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: July 12, 2011
    Assignee: Bendix Commercial Vehicle Systems, LLC
    Inventors: Travis G. Ramler, Andrew Marsh, David Fenzel
  • Patent number: 7882836
    Abstract: A diaphragm valve is provided, in which there is improved sealing of a closing cover (15) against the valve housing (3). The seal includes a cylindrical sealing washer (25), which is connected to the valve housing (3) in one piece and into which a cylindrical wall section (18) of the closing cover (15) can be inserted with press fit.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: February 8, 2011
    Assignee: Dräger Medical GmbH
    Inventors: Brian Hewitt, Piers Antony James
  • Publication number: 20100288489
    Abstract: The invention relates to a sequence valve for use in a hydraulic plant, which sequence valve has a pressure-controlled slide valve (5) with a spring return and in a starting position defines a first cavity (10), which cavity is connected with a tank and the hydraulic plant, and in a second, pressurised position closes off the connection with the tank. The cavity is connected to a second cavity (18) via a channel (15, 16, 17) in the slide valve, and the second cavity is adapted to be connected with a pump via a throttle (20) and is positioned on the same side of the slide valve as the spring (7). The sequence valve has a third cavity (19), which is adapted to be connected with the pump and is positioned on the opposite side of the slide valve from the spring, and the second and the third cavity are connected with each other via a fixed throttle with a short flow channel. The invention also relates to downhole tractor with the sequence valve.
    Type: Application
    Filed: January 14, 2009
    Publication date: November 18, 2010
    Inventor: Jorgen HallundbÆk
  • Patent number: 7823602
    Abstract: A hydraulic system having at least one hydraulic valve for actuating a component, wherein a control pressure acting on the hydraulic valve can be activated through a supply pressure of a pilot circuit having at least one actuator. At least one pressure reduction apparatus is connected in series with the actuator.
    Type: Grant
    Filed: December 17, 2005
    Date of Patent: November 2, 2010
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Eric Müller, Reinhard Stehr