Inlet Valve Patents (Class 417/298)
  • Patent number: 10711776
    Abstract: A reciprocating compressor for the oil and gas industry, the reciprocating compressor has a chamber, a timing valve, an actuator and a controller. A fluid entering the chamber via a suction valve is compressed inside the chamber, and evacuated from the chamber via a discharge valve. The timing valve is located between the chamber and a fluid volume at a relief pressure that is lower than a pressure in the chamber when the timing valve is opened. The actuator is configured to actuate the timing valve. The controller is configured to control the actuator such that to open the timing valve during an expansion phase of the compression cycle, and to close the timing valve when the relief pressure becomes equal to the pressure in the chamber or when the suction valve is opened.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: July 14, 2020
    Assignee: NUOVO PIGNONE SPA
    Inventors: Riccardo Bagagli, Leonardo Tognarelli
  • Patent number: 10596506
    Abstract: An oil separator providing a housing with an inlet for an oil-gas mixture and which defines a space that is closed off my means of a lid, whereby a screen is provided in the aforementioned space in which a filter element is provided and a pipe or collector that connects the interior of the filter element to an outlet in the housing for purified gas, whereby this filter element has a lid and a bottom for collecting oil that has been filtered out, whereby a drainage line is provided for the removal of the oil that has been filtered out, wherein the pipe or collector runs to the lid of the filter element and is connected thereto by means of an electrically conductive connecting element, whereby the sidewall of the pipe or collector is provided with at least one opening for the removal of purified gas.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: March 24, 2020
    Assignee: ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP
    Inventor: Guy L. A. Snels
  • Patent number: 10156233
    Abstract: A continuous run controller for a dual control compressor system includes an integrated housing containing a pilot valve and a hydraulic unloader valve. Low pressure in the hydraulic oil system opens the hydraulic unloader valve such that the suction valve unloader assembly unloads the compressor. High pressure in an air receiver of the compressor system opens the pilot valve such that the suction valve unloader assembly unloads the compressor.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: December 18, 2018
    Assignee: QUINCY COMPRESSOR LLC
    Inventors: Tingrong Ren, Keith Stephens, Gary Hyer
  • Patent number: 9994207
    Abstract: An autolift-resistant piston assembly is provided for an air compressor. The piston assembly comprises an unloader piston having an interior chamber. The piston assembly further comprises a first coil spring for biasing the unloader piston to a loaded position when the piston assembly is installed in the air compressor. The piston assembly also comprises an inner member disposed in the interior chamber of the unloader piston and including (i) a body portion, and (ii) a tapered end portion extending from the body portion and facing an unloader air passage of the air compressor when the piston assembly is installed in the air compressor.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: June 12, 2018
    Assignee: Bendix Commercial Vehicle Systems LLC
    Inventors: Padraig B. Yeats, Jeffrey M. Geither, Shane A. Harte
  • Patent number: 9366249
    Abstract: The disclosure relates to a pistol pump for delivering fluids comprising a piston, a cylinder element, and a pressure chamber arranged between an inlet valve and an outlet valve. The pressure chamber is closed off by a cover. The outlet valve comprises a closing body, a preload device which acts on the closing body, and a supporting mechanism configured to support the preload device. The outlet valve is arranged on the outer circumference of the cylinder element and adjusts a fluid flow conducted through at least one outflow opening between the cover and the cylinder element. The closing body is configured as a movable annular disk guided on the cylinder element, the inner diameter of which annular disk is matched to the outer diameter of the cylinder element.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: June 14, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Oliver Gaertner, Wolfgang Schuller
  • Patent number: 9353741
    Abstract: A throttling valve assembly has an outer housing that is sealed. An actuator is connected to a pressure balanced shaft that extends into the housing to operate a plurality of linkages that can rotate blades in tandem. With the surrounding housing sealed, the shaft penetrations of the blade support shafts no longer need seals or a purge system to supply process gas during times of reduced pressure in situations with the blades nearly closed. A pressure equalization system has balance passages internal to the housing to allow flow from higher pressure zones to lower pressure zone of the process gas so as to avoid creation of a condition that can draw air into any zones of reduced pressure in the housing.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: May 31, 2016
    Assignee: Ingersoll-Rand Company
    Inventors: Thomas E. Gerber, Mark R. Sabin
  • Patent number: 9309877
    Abstract: Disclosed is a cylinder assembly for a fluid-working machine. The assembly includes a body having a first end and a second end. The body further includes a cylinder, a poppet valve seat and a face-sealing annular valve seat. The cylinder is open to the first end and configured to receive a reciprocating piston. The poppet and annular valve seats extend around an axis through the cylinder. An annular valve including the annular valve seat and an annular valve member extends around the cylinder. Thus, the cylinder assembly is compact.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: April 12, 2016
    Assignees: ARTEMIS INTELLIGENT POWER LIMITED, DANFOSS POWER SOLUTIONS APS
    Inventor: Uwe Stein
  • Patent number: 9062671
    Abstract: Method and device for controlling a vacuum apparatus. A method for controlling a vacuum apparatus that applies vacuum to a vacuum accumulator with a pump of a pneumatically operated servo unit of a motor vehicle. The method comprises the steps of determining the pressure in the vacuum accumulator; determining the ambient pressure; adapting a pump control signal to the ambient pressure; comparing the pressure in the vacuum accumulator with an adapted pump control signal; and outputting a pump actuation signal that is a function of the comparison.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: June 23, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Reiner Schmid, Martin Tarnowski, Ian Moore, Russell William Ferguson
  • Patent number: 9010459
    Abstract: Air compressor systems, upgrade kits, computer readable medium, and methods for controlling an air compressor for improved performance. The methods may include receiving a working air requirement; determining an estimated air pressure of the air compressor to deliver the working air requirement; measuring a pressure of the air compressor; comparing the measured pressure with the calculated estimated air pressure; if the measured pressure of the air compressor is greater than the determined estimated air pressure by a predetermined greater amount, then decreasing an output control of the air compressor; and if the measured pressure of the air compressor is less than the calculated estimated air pressure by a predetermined lesser amount then increasing the output control of the air compressor. The air compressor may be controlled based on a measured pressure of delivered working air. An oil control system may shut off oil to parts of the air compressor.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: April 21, 2015
    Assignee: Sandvik Intellectual Property AB
    Inventors: Grant Andrew Field, Simo Tanner, Karl Ingmarsson
  • Patent number: 8992185
    Abstract: A high-pressure pump has a metering valve and a valve stopper. The stopper has a regulation portion which an end surface of the valve is brought into contact with. An outer diameter of the regulation portion is equal to an outer diameter of the outer peripheral surface of the valve. A cylindrical sleeve is disposed around the regulation portion. When the end surface of the valve is in contact with the regulation portion, the sleeve covers a tapered surface of the valve.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: March 31, 2015
    Assignee: Denso Corporation
    Inventor: Hiroshi Inoue
  • Publication number: 20140377089
    Abstract: A compressor is provided and may include a first compression mechanism, a first valve plate including a first port, and a first manifold including a first cylinder having a first piston disposed therein. The first piston may be movable between a first position opening the first port and a second position closing the first port. The compressor may additionally include a second compression mechanism, a second valve plate including a second port, and a second manifold including a second cylinder having a second piston disposed therein. The second piston may be movable between a first position opening the second port and a second position closing the second port. A valve assembly may move one of the first and second pistons into the first position while maintaining the other of the first and second pistons in the second position.
    Type: Application
    Filed: August 18, 2014
    Publication date: December 25, 2014
    Inventors: Frank S. Wallis, Mitch M. Knapke, Ernest R. Bergman
  • Patent number: 8882475
    Abstract: High-response and high-power electromagnetically driven flow rate control valve with flange portion forming an attracting surface on an anchor, a first peripheral surface portion having a diameter smaller than the flange portion, and a cylindrical non-magnetic area opposing an outer peripheral surface of the flange portion with a third clearance interposed therebetween are provided, and a first fluid trap portion communicating with the back pressure chamber via the third clearance is provided. When the diameter of the flange portion is enlarged in order to enlarge the cross-sectional area of the attracting surface, fuel that is displaced by the anchor is increased, but is partly absorbed in the first fluid trap portion, so that the fuel passing through the fuel channel does not increase in comparison with fuel before the diameter of the flange portion is enlarged. Accordingly, the cross-sectional area of the attracting surface may be enlarged.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: November 11, 2014
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Shunsuke Aritomi, Kenichiro Tokuo, Masayuki Suganami, Akihiro Munakata, Satoshi Usui
  • Patent number: 8870549
    Abstract: Reciprocating positive-displacement membrane pumps (which may be referred to hereinafter as “pods,” “pump pods,” or “pod pumps”) used to pump fluids, such as a biological fluid (e.g., blood or peritoneal fluid), a therapeutic fluid (e.g., a medication solution), or a surfactant fluid are disclosed. The speed of a pump stroke can be adjusted by altering a frequency of pressure pulses delivered to the pump membrane during a fill stroke or a delivery stroke of the pump. A pumping algorithm may divide a pump stroke into an initial pumping period and a end-of-stroke pumping period, with the pressure pulse duration being longer during the initial pumping period. This arrangement may allow for a minimum pump flow rate while also providing a pressure ripple that can be used to detect the end of a pump stroke.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: October 28, 2014
    Assignee: DEKA Products Limited Partnership
    Inventors: Brian D. Tracey, Larry B. Gray, Jason A. Demers, James D. Dale, N. Christopher Perry, Michael J. Wilt, Scott A. Leonard
  • Publication number: 20140294619
    Abstract: An unloader assembly and method for unloading a compressor, with the unloader assembly including one or more fingers configured to engage one or more valve elements of a suction valve of the compressor. The unloader assembly also includes a biasing member coupled to the one or more fingers and configured to bias the one or more fingers downward such that the one or more fingers follow the one or more valve elements, and an actuating rod coupled to the one or more fingers and extending longitudinally therefrom. The unloader assembly further includes a first reservoir containing a smart fluid and adapted to receive the actuating rod, and a coil disposed at least one of proximal to and within the first reservoir, with the coil being configured to produce a field when an electrical current is supplied to the coil, to change one or more viscoelastic properties of the smart fluid.
    Type: Application
    Filed: March 7, 2012
    Publication date: October 2, 2014
    Applicant: DRESSER-RAND COMPANY
    Inventor: John Mangiagli
  • Publication number: 20140234131
    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 pressurer 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: Application
    Filed: February 19, 2013
    Publication date: August 21, 2014
    Applicant: WABCO GmbH
    Inventors: Folkhard Holzel, Michael Klatt, Ramesh Pai
  • 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: 8784074
    Abstract: A high pressure intensifier system is disclosed. The system has a high pressure intensifier configured to receive hydraulic fluid from an input and provide the fluid to an output at a higher pressure than at the input, a monitor configured to monitor the pressure of hydraulic fluid provided at the output, and a control configured to control the supply of hydraulic fluid from the input, and configured to maintain the pressure of hydraulic fluid provided at the output at substantially a predetermined value.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: July 22, 2014
    Assignee: Vetco Gray Controls Limited
    Inventors: Peter John Davey, Vernon Lester Hutchings, Harry Richard Cove
  • Patent number: 8777589
    Abstract: A system for actuation in an admission valve of a gas compressor including an admission valve being configured to allow the input of gas inside the cylinder upon the axial movement of the piston in a first axial direction; and a discharge valve configured to allow the output of gas from inside the cylinder upon the axial movement of the piston in a second axial direction opposite to the first axial direction. The system includes at least one actuator element, operatively associated with the admission valve, capable of keeping the admission valve open when the electric motor stops and starts-up. The actuator element is also capable of allowing opening and closing of the admission valve upon the regime of work of the electric motor. The present development also refers to refrigeration equipment which includes the above-mentioned gas compressor.
    Type: Grant
    Filed: November 26, 2009
    Date of Patent: July 15, 2014
    Assignee: Whirlpool S.A.
    Inventors: Egidio Berwanger, Humberto Ferreira da Câmara, Edmar Baars, Ingwald Vollrath
  • Patent number: 8689895
    Abstract: A pilot valve assembly for regulating the output of a first pressure source relative to a second pressure source, a fluid system equipped with the valve assembly, and a method of operating the valve assembly. The valve assembly includes a valve body with inlet and outlet ports and first and second sensing ports. The first and second sensing ports are adapted to sense, respectively, the fluid pressures of the first and second pressure sources. The inlet port is adapted for fluidically connecting to the first pressure source. The valve assembly defines a flow path between the inlet and outlet ports, and has components for allowing fluid flow from the inlet port, through the flow path, and to the outlet port only if the fluid pressure of the first pressure source exceeds the fluid pressure of the second pressure source by a differential by the flow-allowing components.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: April 8, 2014
    Assignee: Vanair Manufacturing Inc.
    Inventor: Jeff Rohl
  • Patent number: 8677977
    Abstract: A pump may have a first chamber and a solenoid coil to control movement of a first valve member. A second chamber may have a second valve member to control fluid moving into a third chamber. A first fluid passageway may link the first and second chambers, a second passageway may link second and third chambers and a third passageway may link third and fourth chambers. After pressurizing the third chamber causing fluid to flow into and leave a fourth chamber, the third chamber depressurizes due to downward movement of a plunger. Upon depressurization with a solenoid coil energized, second valve member floats and then moves against a valve seat. While the second valve member is moving toward the valve seat, the solenoid coil is de-energized causing the first valve member to move and strike the second valve member when the second valve member is moving at maximum velocity.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: March 25, 2014
    Assignees: DENSO International America, Inc., DENSO CORPORATION
    Inventors: Tsutomu Furuhashi, Rebecca Spence, Joseph Lubinski, Dhyana Ramamurthy, Kaoru Oda
  • Patent number: 8662056
    Abstract: A system and method for controlling fuel pressure in a fuel delivery system. The system includes a fuel pump and an inlet control valve. The inlet control valve is operated to a closed state by an electrical signal applied to the inlet control valve. The electrical signal includes a pull-in portion of the electrical signal that is applied to the inlet control valve having a pull-in time interval that is varied based on the fuel pressure. By varying the pull-in time interval to control fuel pressure, electrical energy consumed and acoustic noise generated by the fuel delivery system are reduced.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: March 4, 2014
    Assignee: Delphi Technologies, Inc.
    Inventors: William J. Fedor, III, Charles A. Iannone, Sergio Quelhas
  • Patent number: 8556225
    Abstract: The present invention involves, in some embodiments, pump chambers are configured to prevent contact of at least a portion of a membrane movable within the pump chamber to effect pumping from contacting an inner wall of the pump chamber, which can, in some embodiments, be useful to prevent any gas in the pump chamber from being pumped from the pump chamber during pumping. The pump chambers and pumping cartridges may form part of a pumping system further comprising valve(s) and a controller configured to detect and purge gas from the pump chamber.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: October 15, 2013
    Assignee: DEKA Products Limited Partnership
    Inventor: Larry B. Gray
  • Patent number: 8529219
    Abstract: A variable displacement compressor comprises an opening-degree adjustment valve which is disposed in a flow passage between a suction port and a suction hole communicating with a cylinder bore and variably controls the opening area of the flow passage. The variable displacement compressor is characterized in that the resistance against the movement of the valve body of the opening-degree adjustment valve in the direction of increasing the opening area of the flow passage is made to be greater than the resistance against the movement thereof in the direction of decreasing the opening area. The liquid compression at the starting of the compressor is prevented from occurring, whereby the durability and the reliability of the device can be improved and the device can exhibit excellent displacement control responsiveness.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: September 10, 2013
    Assignee: Sanden Corporation
    Inventor: Kazuhiko Takai
  • Patent number: 8516995
    Abstract: A method and apparatus for controlling a fuel pump assembly comprising a plurality of pump elements, each pump element comprising a cam-driven plunger to perform at least one pumping event per engine revolution and a control valve. Each pumping event corresponds to an associated cam lobe of the associated cam. The method comprises, for each pumping event of each pump element, controlling the control valve of said pump element in response to an output control signal derived from at least one previous pumping event. Fuel pressure is measured within a rail volume and compared with a demanded rail pressure value to derive a rail pressure error. A proportional term and an integral term for the rail pressure error are derived and combined to derive the output control signal. Monitoring of the integral term for each pumping event provides a means for identifying and diagnosing a fault condition.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: August 27, 2013
    Assignee: Delphi Technologies Holding S.arl
    Inventor: James Sinclair
  • Patent number: 8506262
    Abstract: A method for operating at least one pump in a pump assembly comprises providing a pump assembly comprising a fluid end and a power end, the fluid end in communication with a fluid source and at least one downstream destination and comprising a pump housing for a pressurizable chamber, at least one valve for controlling fluid communication with the chamber, the at least one valve defining a normal duration of allowing fluid communication with the chamber during operation of the pump assembly, providing a valve actuation guide external to the chamber, the valve actuation guide coupled to the valve and operable to assist in controlling fluid communication with the chamber, operating the pump assembly, and actuating the valve actuation guide to change an aspect of the valve duration.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: August 13, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Edward Leugemors, Rajesh Luharuka, Toshimichi Wago, Philippe Gambier, Jean-Louis Pessin, Aparna Raman
  • Patent number: 8500420
    Abstract: A suction valve includes a non-rotatable lock sleeve 20 concentrically arranged on a valve seat 3, the lock sleeve having a non-circular outer contour onto which an unloader 22 is placed with its radial central section 28 and which is correspondingly formed in a diametrically opposed manner to prevent turning.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: August 6, 2013
    Assignee: Hoerbiger Kompressortechnik Holding GmbH
    Inventors: Bernhard Spiegl, Markus Testori, Uwe Fuxa
  • Patent number: 8439652
    Abstract: A suction throttle valve of a variable displacement compressor having a compressor housing includes a suction chamber, a crank chamber, an inlet, a suction passage, a valve body, a valve housing, an urging member, a valve chamber, and a communication hole. The valve body is provided for adjusting an opening area of the suction passage and movably arranged in the suction passage. The urging member urges the valve body in the direction that decreases the opening area of the suction passage. The communication hole is provided for connecting the suction chamber to the valve housing. An opening area of the communication hole is variable in accordance with the movement of the valve body. Accordingly, the opening area of the communication hole becomes maximum during the maximum displacement operation of the compressor and becomes reduced during the intermediate displacement operation of the compressor.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: May 14, 2013
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Shiro Hayashi, Taro Ozeki, Mitsunori Yoshida, Toshiyuki Miyano, Sokichi Hibino
  • Patent number: 8366408
    Abstract: A positive displacement pump having a valve with an actuation guide for assisting its actuation. The valve may be configured for controlling fluid communication relative to a chamber of the pump with the valve actuation guide positioned external to the chamber and configured to assist in the controlling. The valve actuation guide itself may include an arm extending into a valve actuation assembly below the valve. In such embodiments, the arm may be reciprocated by crankshaft, hydraulic, or other means. Alternatively, the valve actuation assembly may include electromagnetic means for assisting in actuation of the valve.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: February 5, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Toshimichi Wago, Philippe Gambier, Jean-Louis Pessin, Rajesh Luharuka
  • Patent number: 8360745
    Abstract: An air driven diaphragm pump includes an performance control actuator having a housing with opposed air chambers. The pump includes pump chambers facing the air chambers and pump diaphragms extending between each air chamber and each pump chamber, respectively. The actuator further includes an air valve, an intake to the air valve and an engagement. The intake includes an intake passage and a performance control intake adjuster rotatably mounted. The intake adjuster has a helical channel and a closure element extending adjustably into the intake passage. The engagement engages the helical channel for control of the intake. The helical channel has varied pitch to provide a nonlinear relationship between rotation and axial advancement of the intake adjuster. The nonlinear relationship gives flow rate proportional to the angular rotation of the intake adjuster.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: January 29, 2013
    Assignee: Wilden Pump and Engineering LLC
    Inventors: Curtis W. Dietzsch, Greg S. Duncan, Gary K. Lent
  • Patent number: 8303264
    Abstract: A device for adjusting the flow rate of a screw- type compressor supplying compressed gas, having a control valve to supply a control pressure (Pn) which is in proportion to the gas pressure (Pw) as of a gas pressure (A); an electronic speed controller which sets a lower rotational speed (N) as the control pressure (Pr1) rises; an inlet valve controlled by the control pressure (Pr1) with a valve element which can freely move inside a housing and where a non-return valve is actuated by a spring provided in a line between the inlet valve and the control valve.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: November 6, 2012
    Assignee: Atlas Copco Airpower, Naamloze Vennootschap
    Inventors: Ivo Daniels, Fernand Marcel Albert C. Masschelein
  • Publication number: 20120207623
    Abstract: The invention relates to a method for delivery quantity control of a reciprocating compressor, wherein the motion of a closing organ (5b) of an automatic suction valve (5) is influenced during at least one part of a cycle of the crankshaft by means of a refraction gripper (6), wherein the method comprises a continuously variable return flow control, wherein the retraction gripper (6) contacts the closing organ (5b) and prevents the same from closing during a first partial segment (K1) of the cycle of the crankshaft, and wherein the retraction gripper (6) is retracted during a second partial segment (K2) of the cycle of the crankshaft and the closing organ (5b) is closed, wherein the retraction gripper (6) is retracted such that the speed of the moving closing organ (5b) is reduced prior to contacting the suction valve (5).
    Type: Application
    Filed: July 21, 2010
    Publication date: August 16, 2012
    Inventors: Andreas Allenspach, Roland Aigner
  • Patent number: 8226379
    Abstract: A hydraulic pump includes a housing, a seat portion, and a valve element. The housing has a compression chamber and a fluid passage. The seat portion is provided midway through the fluid passage. The valve element is located between the compression chamber and the fluid passage. The valve element is a closed-end cylindrical member having a bottom portion, a cylindrical portion, and an opening end arranged in this order. The cylindrical portion is located farther away from the seat portion than the bottom portion. The valve element is seated to the seat portion at the bottom portion. A stopper substantially closes the opening end when making contact with the opening end to regulate movement of the valve element.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: July 24, 2012
    Assignees: Denso Corporation, Nippon Soken, Inc.
    Inventors: Katsunori Furuta, Kaoru Oda, Yoshihito Suzuki, Moriyasu Gotoh, Hiroshi Inoue
  • Patent number: 8162068
    Abstract: A pilot valve assembly for regulating the output of a first pressure source relative to a second pressure source, a fluid system equipped with the valve assembly, and a method of operating the valve assembly. The valve assembly includes a valve body with inlet and outlet ports and first and second sensing ports. The first and second sensing ports are adapted to sense, respectively, the fluid pressures of the first and second pressure sources. The inlet port is adapted for fluidically connecting to the first pressure source. The valve assembly defines a flow path between the inlet and outlet ports, and has components for allowing fluid flow from the inlet port, through the flow path, and to the outlet port only if the fluid pressure of the first pressure source exceeds the fluid pressure of the second pressure source by a differential by the flow-allowing components.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: April 24, 2012
    Assignee: Vanair Manufacturing, Inc.
    Inventor: Jeff Rohl
  • Patent number: 8157538
    Abstract: An apparatus is provided and may include a compression mechanism, a valve plate associated with the compression mechanism and having at least one port in fluid communication with the compression mechanism, and a manifold disposed adjacent to the valve plate. A cylinder may be formed in the manifold and a piston may be disposed within the manifold and may be movable relative to the manifold between a first position separated from the valve plate and a second position engaging the valve plate. A valve element may be disposed within the piston and may be movable relative to the piston and the manifold. The valve element may be movable between an open position spaced apart from the valve plate and permitting flow through the port and into the compression mechanism and a closed position engaging the valve plate and restricting flow through the port and into the compression mechanism.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: April 17, 2012
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Frank S. Wallis, Mitch M. Knapke, Ernest R. Bergman
  • Patent number: 8092193
    Abstract: A self-lubricating water-cooled piston-style water pump has a unitary pump housing with a crankcase in direct water communication with the water pump inlet. A low pressure chamber is in direct water communication with the crankcase. A compression chamber is in direct pressurized water communication with a high pressure water manifold through a one-way valve. A high pressure water pump outlet extends outwardly from the manifold to the exterior of the housing. A crankshaft is connected to a connecting rod and a plunger rod, both of which are lubricated and water-cooled in the crankcase. A compression plunger has water channels therethrough connected to the plunger rod and in water communication with the low pressure chamber. The plunger is reciprocal within the compression chamber. A second one-way valve is on the plunger in the compression chamber to let water into the compression chamber.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: January 10, 2012
    Assignee: Diversified Dynamics Corporation
    Inventor: Steve Larson
  • Publication number: 20110268590
    Abstract: A fluid working machine, operable to carry out a motoring cycle under at least some circumstances, comprises a controller (12) and a working chamber (2) of cyclically varying volume. The working chamber has a high pressure valve (18) associated therewith to control the connection of the working chamber to a high pressure manifold (20), and an electronically controllable primary low pressure valve (14) to control the connection of the working chamber to a low pressure manifold. The controller is operable to actively control at least the primary low pressure valve, in phased relationship to cycles of working chamber volume, to determine the net displacement of fluid by the working chamber on a cycle by cycle basis. The fluid working machine is adapted to release pressurised fluid from the working chamber prior to the opening of the primary low-pressure valve, during a motoring cycle. This facilitates the opening of the primary low pressure valve.
    Type: Application
    Filed: June 22, 2009
    Publication date: November 3, 2011
    Applicant: Artemis Intelligent Power Limited
    Inventors: Uwe Bernhard Pascal Stein, Michael Richard Fielding, Stephen Michael Laird, Alasdair Ian Fletcher Robertson
  • Patent number: 7931452
    Abstract: A compressor has a suction throttle valve, which includes a suction passage, a suction port, a valve body, an urging member, a valve chamber, a first communication hole, a closing valve and a valve seat. The closing valve closes the hole of the valve body by pressure difference between the valve chamber and the suction port. The valve seat limits movement of the closing valve toward the suction port. The hole of the valve body is closed when the closing valve is in contact with the valve body, and open when the closing valve is in contact with the valve seat. A communication passage is formed in the closing valve or the valve seat, which enables communication between the hole of the valve body and the suction port when the closing valve is in contact with the valve seat.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: April 26, 2011
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Sokichi Hibino, Shiro Hayashi, Masaki Ota
  • Patent number: 7819637
    Abstract: A flow-metering valve for metering a flow of liquid has a valve member, a stopper and an electromagnetic driving member. The valve member is reciprocally displaceably arranged between a first position and a second position in the liquid chamber. The stopper is arranged at the second position in the liquid chamber. The electromagnetic driving member generates a magnetic attractive force between the valve member and the stopper to hold the valve member at the second position when the electromagnetic driving member is energized.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: October 26, 2010
    Assignee: Denso Corporation
    Inventors: Kaoru Oda, Hiroshi Inoue, Nobuo Ota, Yoshitsugu Inaguma, Yutaka Niwa
  • Patent number: 7811067
    Abstract: An air driven diaphragm pump includes an performance control actuator having a housing with opposed air chambers. The pump includes pump chambers facing the air chambers and pump diaphragms extending between each air chamber and each pump chamber, respectively. The actuator further includes an air valve, an intake to the air valve and an engagement. The intake includes an intake passage and a performance control intake adjuster rotatably mounted. The intake adjuster has a helical channel and a closure element extending adjustably into the intake passage. The engagement engages the helical channel for control of the intake. The helical channel has varied pitch to provide a nonlinear relationship between rotation and axial advancement of the intake adjuster. The nonlinear relationship gives flow rate proportional to the angular rotation of the intake adjuster.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: October 12, 2010
    Assignee: Wilden Pump and Engineering LLC
    Inventors: Curtis W. Dietzsch, Greg S. Duncan, Gary K. Lent
  • Publication number: 20100040487
    Abstract: Improved device (7) for adjusting the flow rate of a screw-type compressor (1) supplying compressed gas, consisting of a control valve (14) which supplies a control pressure (Pn) which is in proportion to the gas pressure (Pw) as of a gas pressure (A); an electronic speed controller (20) which sets a lower rotational speed (N) as the control pressure (Pr1) rises; an inlet valve (8) controlled by the control pressure (Pr1) with a valve element (10) which can freely move inside a housing (9) and whereby a non-return valve (22) actuated by means of a spring (23) is provided in a line (21) between the inlet valve (8) and the control valve (14).
    Type: Application
    Filed: August 10, 2006
    Publication date: February 18, 2010
    Inventors: Ivo Daniëls, Fernand Marcel Albert C. Masschelein
  • Publication number: 20100028170
    Abstract: The invention relates to a device for delivering a liquid, which device comprises a pump, and an anti-siphon valve external to the pump and having an inlet channel connected to the outlet duct of the pump, and an outlet channel, between which channels a seat and a moving member are disposed that are suitable for co-operating together and that define, between the inlet channel and the outlet channel, a leaktight liquid flow zone, said moving member being suitable for going from an opening position making it possible for liquid to flow through said flow zone, to a closure position in which the moving member comes into contact with the seat of the valve and prevents any flow through said flow zone, said moving member being subjected to the pressure of a reference chamber that is not in fluid communication with the outlet channel. Application to obtaining a pump for injecting liquid medication.
    Type: Application
    Filed: September 3, 2007
    Publication date: February 4, 2010
    Applicant: DEBIOTECH SA
    Inventors: Niklaus Schneeberger, Véronique Vallet, Eric Chappel
  • Patent number: 7648343
    Abstract: A method allows for controlling the amount of electric current from an electrical circuit used by an electric motor in an electric motor driven reciprocating air compressor unit. A piston is reciprocated with a portable electric motor while air is channeled through an inlet into a compression cylinder, allowing the piston to draw on compressed amounts of air during each reciprocation. A valve mechanism is mounted to the inlet and is adjustable to a plurality of positions, each position allowing for one of a plurality of predeterminable amounts of air to be permitted to be drawn into the compression cylinder and compressed. The valve mechanism is manually adjusted to control the amount of air drawn into the compression cylinder and compressed by the piston to control the amount of electric current used by the electric motor.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: January 19, 2010
    Inventor: James P. Cornwell
  • Patent number: 7603987
    Abstract: A fuel injection pump for a piston engine, the pump comprising a cylinder element having a pressure plenum provided with an outlet chamber for removing pressurized fuel from the pressure plenum, a piston arranged to reciprocate inside the pressure plenum, an inlet chamber arranged outside the pressure plenum and at least one inlet channel arranged between the pressure plenum and the inlet chamber. At least one fill channel provided with a non-return valve is arranged between the pressure plenum and the inlet chamber, the valve allowing fuel flow from the inlet chamber to the pressure plenum but preventing flow from the pressure plenum to the inlet chamber.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: October 20, 2009
    Assignee: Wartsila Finland Oy
    Inventors: Matti Koivunen, Matts Friis, Thomas Hägglund
  • Patent number: 7575419
    Abstract: A fuel pump for an internal-combustion engine; the fuel pump is provided with: a variable-volume chamber for containing fuel; an intake valve connected to the variable-volume chamber; a delivery valve connected to the variable-volume chamber; and a pumping device for varying the volume of the first variable-volume chamber. The intake valve has a disk provided with a plurality of through supply holes, and a deformable lamina, which is fixed to the disk in a position corresponding to a peripheral edge thereof and is provided with a series of flaps, each of which is coupled to a respective supply hole.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: August 18, 2009
    Assignee: Magneti Marelli Powertrain S.p.A.
    Inventors: Massimo Mattioli, Paolo Pasquali, Luigi Gagliardi
  • Patent number: 7540721
    Abstract: Apparatus and method for releasing a stuck inlet check valve of a paint pump including a solenoid connected to the check valve with a pusher element which momentarily displaces a moveable element such as a ball in the check valve to break any adhesion between the movable element and a valve seat. A control provides a single pulse of energy to the solenoid each time power is applied to the pump. The control includes an SCR connected between a full wave rectifier and a coil of the solenoid, with gate current removed from the SCR to commutate the SCR after a predetermined time interval after power is applied.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: June 2, 2009
    Assignee: Wagner Spray Tech Corporation
    Inventors: Stephen K. Liedtke, Timothy W. Zeigler
  • Patent number: 7503755
    Abstract: A baffle plate assembly has a baffle plate comprising a back plate and a partition wall. The back plate has an inner space and is attached to the housing of the compressor. The partition wall is formed on the back plate to divide the inner space of the back plate into at least one upper guiding channel communicating with the compressing chamber in the compressor and at least one lower guiding channel communicating with the motor chamber of the compressor. Accordingly, the working fluid can be respectively led into the compressing chamber and the motor chamber of the compressor through the at least one upper guiding channel and the at least one lower guiding channel in a certain proportion. Consequently, the compressor will operate at an optimal condition.
    Type: Grant
    Filed: March 1, 2004
    Date of Patent: March 17, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Ching-Feng Lai, Yu-Choung Chang, Kun-I Liang, Ann Huang
  • Publication number: 20090028723
    Abstract: An apparatus is provided and may include a compression mechanism, a valve plate associated with the compression mechanism and having at least one port in fluid communication with the compression mechanism, and a manifold disposed adjacent to the valve plate. A cylinder may be formed in the manifold and a piston may be disposed within the manifold and may be movable relative to the manifold between a first position separated from the valve plate and a second position engaging the valve plate. A valve element may be disposed within the piston and may be movable relative to the piston and the manifold. The valve element may be movable between an open position spaced apart from the valve plate and permitting flow through the port and into the compression mechanism and a closed position engaging the valve plate and restricting flow through the port and into the compression mechanism.
    Type: Application
    Filed: July 22, 2008
    Publication date: January 29, 2009
    Inventors: Frank S. Wallis, Mitch M. Knapke, Ernest R. Bergman
  • Patent number: RE40499
    Abstract: Step control in capacity modulation of a refrigeration or air conditioning circuit is achieved by rapidly cycling a solenoid valve in the suction line, economizer circuit or in a bypass with the percent of “open” time for the valve regulating the rate of flow therethrough. A common port in the compressor is used for economizer flow and for bypass.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: September 16, 2008
    Assignee: Carrier Corporation
    Inventor: Alexander Lifson
  • Patent number: RE40830
    Abstract: A pulsed modulated capacity modulation system for refrigeration, air conditioning or other types of compressors is disclosed in which suitable valving is provided which operates to cyclically block flow of suction gas to a compressor. A control system is provided which is adapted to control both the frequency of cycling as well as the relative duration of the on and off time periods of each cycle in accordance with sensed system operating conditions so as to maximize the efficiency of the system. Preferably the cycle time will be substantially less than the time constant of the load and will enable substantially continuously variable capacity modulation from substantially zero capacity to the full capacity of the compressor. Additional controls may be incorporated to modify one or more of the motor operating parameters to improve the efficiency of the motor during periods of reduced load.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: July 7, 2009
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Jean-Luc Caillat
  • Patent number: RE44636
    Abstract: A pulsed modulated capacity modulation system for refrigeration, air conditioning or other types of compressors is disclosed in which suitable valving is provided which operates to cyclically block flow of suction gas to a compressor. A control system is provided which is adapted to control both the frequency of cycling as well as the relative duration of the on and off time periods of each cycle in accordance with sensed system operating conditions so as to maximize the efficiency of the system. Preferably the cycle time will be substantially less than the time constant of the load and will enable substantially continuously variable capacity modulation from substantially zero capacity to the full capacity of the compressor. Additional controls may be incorporated to modify one or more of the motor operating parameters to improve the efficiency of the motor during periods of reduced load.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: December 10, 2013
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Jean-Luc Caillat