Electrically Or Magnetically Actuated Distributor Patents (Class 417/505)
  • Patent number: 10584668
    Abstract: Provide is a high-pressure fuel pump capable of improving the degree of freedom of layout of members to be attached to a pump body and a producing method thereof. Therefore, the high-pressure fuel pump includes the suction joint that sucks fuel, the pump body formed with the pressurizing chamber that pressurizes the fuel sucked from the suction joint, and the discharge joint that discharges the fuel pressurized in the pressurizing chamber. The pump body is formed so that at least a part of the side surface portion thereof becomes a cylindrical portion or a polygonal shape portion. At least one of the discharge joint and the suction joint may be fixed on the inner peripheral side with respect to the outermost peripheral portion of the cylindrical portion or the polygonal shape portion of the side surface portion.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: March 10, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Satoshi Usui, Atsushi Hohkita, Masayuki Suganami, Kenichiro Tokuo, Minoru Hashida, Masamichi Yagai, Yuta Saso, Kazuaki Tokumaru, Atsuji Saito
  • Patent number: 10487822
    Abstract: An airflow generating device includes a container, a first air switch, a second air switch, a magnetic oscillating element, and one or more coils. The container has a first opening and a second opening. The first air switch is configured to open or close the first opening. The second air switch is configured to open or close the second opening. The magnetic oscillating element is disposed in the container. The one or more coils are disposed adjacent to the magnetic oscillating element. The one or more coils are configured to generate at least one sensing current corresponding to the oscillation of the magnetic oscillating element, so as to make the first air switch and the second air switch respectively open or close the first opening and the second opening according to the at least one sensing current.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: November 26, 2019
    Assignees: Inventec (Pudong) Technology Corporation, INVENTEC CORPORATION
    Inventor: Meng-Lung Chiang
  • Patent number: 10371109
    Abstract: A high-pressure fuel supply pump in which a relief valve mechanism is not detached by a force generated by a differential pressure between an inlet side and an output side of a relief valve mechanism is obtained. According to the present invention, in order to obtain the high-pressure fuel supply pump, the relief valve mechanism of the high-pressure fuel supply pump is oriented from a downstream side of a discharge valve to an upstream side of the discharge valve, and the output side of the relief valve mechanism is inserted from the upstream side of the discharge valve into the pump housing, and the relief valve mechanism is fixed with press fitting. Therefore, a force exerted by the differential pressure between the inlet side pressure and the output side pressure of the relief valve mechanism is exerted in a direction in which the relief valve mechanism is inserted, so that the relief valve mechanism can be prevented from being detached.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: August 6, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Yuta Saso, Atsuji Saito, Satoshi Usui, Shingo Tamura, Moritsugu Akiyama, Hiroyuki Yamada, Atsushi Hohkita
  • Patent number: 10174747
    Abstract: Semi-commanded valve system applied to an alternative-type compressor with at least a cylinder (1), at least a piston (2), at least a compression chamber (3), and at least one valve (71;81) acting in their respective orifice (7;8). Said at least one valve (71;81) is prestressed in a first operation state and is able to act as a check valve. Furthermore, said at least one valve (71;81) has at least a ferrous portion and can be selectively actuated by a magnetic field generating element (72;82). Method of modulating the capacity of a compressor provided with such a semi-commanded valve system.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: January 8, 2019
    Assignee: Whirlpool S.A.
    Inventors: Dietmar Erich Bernhard Lilie, Eduardo Arceno, Rodrigo Kremer
  • Patent number: 9797357
    Abstract: Responsiveness is improved in valve opening and valve closing of an electromagnetically driven intake valve unit in which a valve is provided on a pressurizing chamber side of a valve seat. The valve includes an annular abutting surface that abuts the valve seat to shut off a fuel intake passage and a bottomed cylindrical part provided at an inner peripheral part of the annular abutting surface. The bottomed cylindrical part is inserted into a fuel introduction hole formed in the valve housing inside the valve seat, and the outer surface of an end part of the bottomed cylindrical part is exposed to fuel in a low pressure fuel chamber provided upstream of the fuel introduction hole.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: October 24, 2017
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Satoshi Usui, Kenichiro Tokuo, Tatsuo Kawano, Masahiko Hayatani, Shingo Tamura, Hiroyuki Yamada, Katsumi Miyazaki
  • Patent number: 9518546
    Abstract: A pump assembly includes a pump housing provided with a bore within which a pumping plunger is reciprocal along a plunger axis; a pump chamber defined at one end of the bore within which fuel is pressurized to a relatively high level; and an inlet valve housed within the pump housing and in communication with the pump chamber to control the flow of fuel into the pump chamber. A clamp member applies a clamping load to the pump housing, which has at least a component that is aligned with the plunger axis, through a surface of the pump housing located approximately axially above the bore. The clamp member may be secured to the pump housing by a securing member, which may be positioned radially outwards from the bore and extend through or below a plane through the pump chamber and perpendicular to the plunger axis through the pump chamber.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: December 13, 2016
    Assignee: Delphi International Operations Luxembourg S.A.R.L.
    Inventors: Daniel Jeremy Hopley, Joanne Hopley
  • Patent number: 9174791
    Abstract: Systems include at least one substantially thermally sealed storage container, including an outer assembly including one or more sections of ultra efficient insulation material substantially defining at least one thermally sealed storage region, and an inner assembly including one or more interlocks configured to provide controllable egress of a quantity of a material from one or more of the at least one thermally sealed storage region.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: November 3, 2015
    Assignee: TOKITAE LLC
    Inventors: Roderick A. Hyde, Edward K. Y. Jung, Nathan P. Myhrvold, Clarence T. Tegreene, William H. Gates, III, Charles Whitmer, Lowell L. Wood, Jr.
  • Patent number: 9158308
    Abstract: The pumps and pressure controllers described herein aim to pump fluid in two directions, such as from a first port to a second port and vice versa. The pressure controllers aim to control pressure in a system or device, such as a test device, accurately and precisely at a variety of different pressure levels. Generally described, the pumps and pressure controllers described herein may include two or more control valves, which may be actuatable in such a manner so that the pump or pressure controller can switch between operating as a vacuum pump and operating as a compressor. In some embodiments, the pressure controllers may be able to adjust a pressure in the device by small increments thereby providing increased control of the pressure in the device over the prior art. Furthermore, the pressure controllers may be able to control the pressure of a system having low pressure levels.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: October 13, 2015
    Assignee: Fluke Corporation
    Inventors: Tom Lohkamp, Bill Stephens, Martin Gotch
  • Patent number: 9133838
    Abstract: In a method of operating a fluid-working machine, the volume of working fluid displaced during each cycle of working chamber volume is selected taking into account the availability of other working chambers. The status of each working chamber is monitored and a working chamber treated as unavailable if it is found to be malfunctioning. A working chamber may be treated as unavailable if it is allocated to an alternative working function. A fault may be detected in a working chamber by determining whether a measured output parameter of the fluid working machine fulfills at least one acceptable function criterion taking into account the previously selected net displacement of working fluid by a working chamber during a cycle of working chamber volume to carry out the working function.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: September 15, 2015
    Assignee: ARTEMIS INTELLIGENT POWER LIMITED
    Inventors: William Hugh Salvin Rampen, Niall James Caldwell, Stephen Michael Laird
  • Patent number: 8985973
    Abstract: Responsiveness is improved in valve opening and valve closing of an electromagnetically driven intake valve unit in which a valve is provided on a pressurizing chamber side of a valve seat. The valve includes an annular abutting surface that abuts the valve seat to shut off a fuel intake passage and a bottomed cylindrical part provided at an inner peripheral part of the annular abutting surface. The bottomed cylindrical part is inserted into a fuel introduction hole formed in the valve housing inside the valve seat, and the outer surface of an end part of the bottomed cylindrical part is exposed to fuel in a low pressure fuel chamber provided upstream of the fuel introduction hole.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: March 24, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Satoshi Usui, Kenichiro Tokuo, Tatsuo Kawano, Masahiko Hayatani, Shingo Tamura, Hiroyuki Yamada, Katsumi Miyazaki
  • Patent number: 8979514
    Abstract: A pump includes a pump casing defining a first chamber and a second chamber, and fluid moves from the first chamber to the second chamber during a stroke. The pump also includes a needle that is movably disposed in the first chamber and a valve carriage that is movably disposed in the second chamber. The valve carriage includes an internal stop, and the valve carriage also includes a cavity therein that is partially defined by the internal stop. The pump further includes a valve that is movably disposed within the cavity of the valve carriage, and the valve is operable to be impacted by the needle during the stroke. Also, the needle is operable to impact the valve carriage during the stroke. Moreover, the valve is operable to impact the internal stop during the stroke at a time different from the needle impacting the valve carriage.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: March 17, 2015
    Assignees: DENSO International America, Inc., Denso Corporation
    Inventors: Tsutomu Furuhashi, Dhyana Ramamurthy, Joseph Lubinski, Rebecca Spence
  • Patent number: 8979509
    Abstract: A screw compressor includes a casing and a compression mechanism accommodated in the casing. The compression mechanism has a screw rotor, a gate rotor and a communication mechanism. The gate rotor has a flat plate shape. A rotational axis of gate rotor is orthogonal to a rotational axis of the screw rotor. The communication mechanism is arranged to communicate a high pressure space and a low pressure space in the casing.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: March 17, 2015
    Assignee: Daikin Industries, Ltd.
    Inventors: Norio Matsumoto, Hiromichi Ueno, Shigeharu Shikano
  • Publication number: 20150044080
    Abstract: A shutoff valve (2) which is switchable in a cycled manner for capacity regulation by temporarily shutting off the intake gas feed is designed as a multi-element ring valve, and is directly actuated by means of an electromagnet (12). The actuating forces for switching the shutoff valve (2) may be kept small via pressure compensation from the intake gas feed (3) to behind the anchor plate (9).
    Type: Application
    Filed: August 1, 2014
    Publication date: February 12, 2015
    Applicant: HOERBIGER KOMPRESSORTECHNIK HOLDING GMBH
    Inventors: Bernhard SPIEGL, Andreas BRANDL, Florian SCHACHERREITER
  • Publication number: 20150017039
    Abstract: A high-pressure fuel supply pump having a normally-closed type electromagnetically-driven inlet valve mechanism supporting a large capacity and causing least sound is provided. A valve member having a seat surface that comes into abutment with an inlet valve seat; and a plunger rod positioned on the seat surface side of the valve member and configured to operate the valve member by a magnetic attraction force are provided, and a protector configured to face a surface of the valve member on the surface opposite to the seat surface with a gap therebetween when the plunger rod makes a full stroke in the valve-open direction of the valve member and an anchor for driving the plunger rod comes into contact with a stopper is provided.
    Type: Application
    Filed: January 15, 2013
    Publication date: January 15, 2015
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Satoshi Usui, Tatsuo Kawano, Hiroyuki Yamada, Katsumi Miyazaki, Kenta Iwakura, Minoru Hashida
  • Publication number: 20140377109
    Abstract: A high-pressure fuel supply pump including an electromagnetically driven intake valve is configured such that a pressure equalizing hole is provided in the valve stopper positioned between the valve and a pressurizing chamber. The pressure equalization hole connects a spring storage space, provided between a valve and a valve stopper, with a surrounding fluid passage. The high-pressure fuel supply pump is further configured such that an opening of the pressure equalizing hole at the spring storage chamber side is open at a position at the inner side of a diameter of the spring. Since the pressure in the pressurizing chamber can be introduced into the inner side of the spring without traversing the spring, the unstable behavior of the spring or the valve due to the introduced pressure eliminated. Since the force applied to the valve when the valve closes is stabilized, the closing timing of the valve is stable.
    Type: Application
    Filed: November 28, 2012
    Publication date: December 25, 2014
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Masahiko Hayatani, Satoshi Usui, Hideki Machimura, Tatsuo Kawano, Syunsuke Aritomi, Shingo Tamura
  • Publication number: 20140377082
    Abstract: Semi-commanded valve system applied to an alternative-type compressor, wherein said compressor comprises at least a cylinder (1), at least a piston (2), at least a compression chamber (3), and at least one valve (71;81) acting in their respective orifice (7;8). Said at least one valve (71;81) is prestressed in a first operation state and is able to act as a check valve. Furthermore, said at least one valve (71;81) comprises at least a ferrous portion and can be selectively actuated by a magnetic field generating element (72;82). Method of modulating the capacity of a compressor provided with such a semi-commanded valve system.
    Type: Application
    Filed: November 28, 2012
    Publication date: December 25, 2014
    Inventors: Dietmar Erich Bernhard Lilie, Eduardo Arceno, Rodrigo Kremer
  • Patent number: 8905732
    Abstract: In usual hydraulic pumps, a separate assembly opening is provided for every valve of the hydraulic pump. This design causes sealing problems. It is proposed, that the fluid inlet valve and the fluid outlet valve can be assembled through a common assembly access port. Further, the fluid inlet valve and the fluid outlet valve can be arranged around a common cavity, or even within the same cavity, via the common assembly access port in the fluid working machine's body.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: December 9, 2014
    Assignee: Danfoss Power Solutions APS
    Inventors: Onno Kuttler, Uwe Stein
  • 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
  • Publication number: 20140241924
    Abstract: An electromagnetic body has a movable core reciprocatably movable within a movable core chamber. The movable core has through holes and a fitting hole that pass through the movable core in a direction of movement of the movable core. A stator core facing the movable core defines the movable core chamber together with the electromagnetic body. A valve stem is fixed into the fitting hole and has a fluid chamber recessed from a first end surface facing the stator core. Air bubbles generated in a gap can be guided into the fluid chamber and collapse by flow of the fuel flowing into the fluid chamber from the through holes through the gap.
    Type: Application
    Filed: February 27, 2014
    Publication date: August 28, 2014
    Applicants: NIPPON SOKEN, INC., DENSO CORPORATION
    Inventors: Yasuhiro SAWADA, Yutaka MIYAMOTO, Shinichiro KOSHIMOTO
  • Patent number: 8794936
    Abstract: A high-pressure fuel supply pump includes a compression chamber, a plunger reciprocating in the compression chamber for pressurizing fuel in the compression chamber, a discharge valve for discharging pressurized fuel from the compression chamber to a high-pressure fuel passage of a high-pressure fuel supply system for supplying high-pressure fuel to an internal combustion engine, and a first solenoid actuated valve for connecting and disconnecting a first low-pressure fuel passage and the compression chamber. The first solenoid actuated valve is biased by a first biasing member in a closing direction of the first solenoid actuated valve, and is opened or kept open against the biasing force of the first biasing member, when the first solenoid actuated valve is energized. The high pressure fuel supply pump further includes a second solenoid actuated valve for connecting and disconnecting a second low-pressure fuel passage and the compression chamber.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: August 5, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Kenichiro Tokuo, Jonathan Borg
  • Publication number: 20140147293
    Abstract: A hydraulic machine includes a number of piston/cylinder units which are each controlled by valves positioned upstream and downstream. The valves are in turn activated by an electronic regulator to switch the hydraulic machine selectively into a pump operating mode and a motor operating mode. The regulator selectively switches the individual piston/cylinder units or unit groups separately from one another into individually selectable operating modes as a function of certain regulating variables.
    Type: Application
    Filed: September 16, 2011
    Publication date: May 29, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Bjoern Beuter, Alejandro Lopez Pamplona
  • Patent number: 8657589
    Abstract: A hydraulic machine has at least one working chamber (11) of cyclically changing volume, and low-pressure and high pressure valves (15, 13) to control the connection of each of the at least one working chambers to low-pressure and high-pressure lines (16, 14) respectively. A method of operating the machine includes holding the low-pressure valve means (15) closed during at least an entire cycle of the chamber (11), starting at minimum chamber volume, such that gas dissolved in liquid in the chamber is released therefrom during an expansion of the chamber volume and re-dissolved during a reduction thereof.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: February 25, 2014
    Assignee: Artemis Intelligent Power Limited
    Inventors: Uwe Bernhard Pascal Stein, Niall James Caldwell, William Hugh Salvin Rampen
  • Patent number: 8636481
    Abstract: An automatic inflation pump including a housing, an air inlet, an air outlet provided in the housing, a manual rotary switch, a sealing device located at the air outlet, an air pump provided inside the housing and a motor for driving the air pump. The manual rotary switch is provided thereon with a dovetail groove which includes a deep groove and two shallow grooves located at both sides of the deep groove. The sealing device includes a driving stem and an air sealing plate for sealing the air outlet. One end of the driving stem is connected with the air sealing plate. A spring is provided on the driving stem. One end of the spring is fixed on a free end of the driving stem and the other end of the spring is supported at the air outlet.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: January 28, 2014
    Assignee: Dong Guan Hua Tao Metal & Plastic Products Co., Ltd.
    Inventor: Ying'an Liu
  • Patent number: 8529220
    Abstract: A housing of a high-pressure pump defines a passage communicating with a pressurizing chamber in which fuel is pressurized. The passage has an annular engagement groove which is radially outwardly concaved on its inner wall surface. A valve body is disposed in the passage. The engaged member is disposed inside of the passage wall. A valve body engaging member is comprised of a plurality of arc-shaped plate members, which form circular shape. The valve body engaging member is inserted into the engagement groove in such a manner as to be engaged with the valve body. A C-ring is firmly in contact with the plate members and biases them toward the engagement groove.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: September 10, 2013
    Assignee: Denso Corporation
    Inventors: Yoshihito Suzuki, Masahiro Fukui, Shinobu Oikawa
  • Publication number: 20130183170
    Abstract: A micro-dosing pump includes a pump chamber substrate, a flexible membrane, a fluid line, a valve disk, a magnetizable actuator disk, and a drive unit. The pump chamber substrate has a pump chamber. The flexible membrane is on a first side of the pump chamber substrate and covers the pump chamber in a fluid-tight manner. The fluid line is on a second side of the pump chamber substrate such that fluid can enter and leave the pump chamber. The valve disk, arranged inside the pump chamber, has a fluid through-opening and is configured to close the fluid line by rotating and to open it via the through-opening. The actuator disk is coupled to the valve disk such that rotating the actuator disk rotates the valve disk. The drive unit has a pump plunger configured to move the membrane for suction or ejection of fluid and to rotate the actuator disk.
    Type: Application
    Filed: January 8, 2013
    Publication date: July 18, 2013
    Applicant: Robert Bosch GmbH
    Inventor: Robert Bosch GmbH
  • Patent number: 8475142
    Abstract: The invention relates to a pump comprising a pump unit, an intake line, and a valve device associated with same for implementing suction regulation of the pump, and comprising an intake region downstream from the valve device as viewed in the direction of flow of the medium conveyed by the pump.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: July 2, 2013
    Assignee: Ixetic Bad Homburg GmbH
    Inventors: Peter Breuer, Bernd Brunsch, Stefan Gross
  • Patent number: 8366416
    Abstract: A pumping device including a housing whose front face is at least partly formed by a block of transparent material, this block containing a number of machine-drilled holes including at least one blind hole forming a work chamber, at least one hole forming an admission and/or exhaust channel leading into the blind hole, two through channels whose orifices on the front face of the block are fitted with hydraulic hose connection means, two solenoid valves, a plunger sliding leaktightly in a bearing fitted to the orifice of the blind hole, this plunger defining with the blind hole a volume that varies as a function of the axial position of the plunger, and a module connected to the base of the plunger for moving the plunger translationally. The pumping device can be used for pipetting, dilution, rinsing and/or dispensing of samples, regardless of the envisaged volume ranges.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: February 5, 2013
    Assignee: Pulssar Technologies
    Inventor: Khaled Abousaleh
  • Publication number: 20130004339
    Abstract: The invention relates to a pressure control device (7, 8, 9, 18, 22, 23, 24, 57, 58, 60, 70, 71, 80, 81, 82, 90) for a vehicle (100), wherein the vehicle (100) comprises at least one drive motor (101) for producing a driving force of the vehicle, a compressed-air supply and storage system (12), and an air compressor (1) that is or can be coupled to the drive motor (101) of the vehicle, and the pressure control device (7, 8, 9, 18, 22, 23, 24, 57, 58, 60, 70, 71, 80, 81, 82, 90) comprises at least one electronic control unit (18) and at least one valve device (7, 8, 9, 23, 24, 57, 58, 60, 70, 71, 80, 81, 82, 90) for controllably connecting a compression chamber (4) of the air compressor (1) to the compressed-air supply and storage system (12), wherein the pressure control device has the following characteristics: a) the pressure control device (7, 8, 9, 18, 22, 23, 24, 57, 58, 60, 70, 71, 80, 81, 82, 90) is designed to connect the compression chamber (4) to the compressed-air supply and storage system (12) in
    Type: Application
    Filed: March 7, 2011
    Publication date: January 3, 2013
    Inventors: Stephan Eisfelder, Ingo Stumberg, Christian Wiehen, Christoph Wilken
  • Publication number: 20120301340
    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: Application
    Filed: August 16, 2010
    Publication date: November 29, 2012
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Shunsuke Aritomi, Kenichiro Tokuo, Masayuki Suganami, Akihiro Munakata, Satoshi Usui
  • Patent number: 8287256
    Abstract: Although modern diesel fuel formulations are intended to reduce emissions of diesel engines, at least some of those modern fuels tend to have relatively low lubricity levels. The control valve assemblies described herein help to minimize any increased wear that would otherwise result from the use of such low lubricity fuels by providing a valve element, a valve guide, and an insert. The valve element is received within the valve guide and is moveable between an open position and a closed position. The insert forms a first sealed interface and a second sealed interface with the valve element and the valve guide. When the valve element is in the closed position, both of the first sealed interface and the second sealed interface are engaged. When the valve element is in the open position, only one of the first sealed interface and the second sealed interface is engaged.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: October 16, 2012
    Assignee: Caterpillar Inc.
    Inventors: Scott F. Shafer, Christopher R. Jones
  • Publication number: 20120251367
    Abstract: A pump includes a pump casing defining a first chamber and a second chamber, and fluid moves from the first chamber to the second chamber during a stroke. The pump also includes a needle that is movably disposed in the first chamber and a valve carriage that is movably disposed in the second chamber. The valve carriage includes an internal stop, and the valve carriage also includes a cavity therein that is partially defined by the internal stop. The pump further includes a valve that is movably disposed within the cavity of the valve carriage, and the valve is operable to be impacted by the needle during the stroke. Also, the needle is operable to impact the valve carriage during the stroke. Moreover, the valve is operable to impact the internal stop during the stroke at a time different from the needle impacting the valve carriage.
    Type: Application
    Filed: January 23, 2012
    Publication date: October 4, 2012
    Applicants: DENSO CORPORATION, DENSO INTERNATIONAL AMERICA, INC.
    Inventors: Tsutomu Furuhashi, Dhyana Ramamurthy, Joseph Lubinski, Rebecca Spence
  • Patent number: 8257067
    Abstract: A volume chamber is formed by a valve member, an inner peripheral wall of a tubular portion and a bottom portion of a stopper when the valve member is engaged with tubular portion. A communication passage communicates between the volume chamber and one of an intermediate passage of a valve body and a tertiary passage of the stopper. The communication passage is formed at a location, which is spaced from a contact surface between the tubular portion and the valve member by a first predetermined distance and is also spaced from a contact surface between the bottom portion and the first urging member by a second predetermined distance.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: September 4, 2012
    Assignee: Denso Corporation
    Inventors: Masahiro Fukui, Yoshihito Suzuki, Katsunori Furuta, Tatsumi Oguri, Hiroshi Inoue
  • Patent number: 8246573
    Abstract: A medical device system comprises a reservoir configured to store a therapeutic fluid and a medical pump configured to deliver the therapeutic fluid from the reservoir to a patient. The system also comprises a sensor that can detect a characteristic associated with the pump and a processor to determine if the characteristic detected indicates the reservoir is empty or near empty. The characteristic may comprise a property associated with the energization of an actuation mechanism configured to be energized to provide a pump stroke. The characteristic may also comprise a characteristic of a noise made by an actuator within the pump at the end of a pump stroke.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: August 21, 2012
    Assignee: Medtronic, Inc.
    Inventors: Irfan Z. Ali, Keith A. Miesel, Scott L. Kalpin, Scott A. Sarkinen
  • 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: 8206125
    Abstract: A fluid working machine (1) has several working chambers (5) of cyclically changing volume. For pumping hydraulic fluid, the inlet and outlet valves (8, 9) are electrically actuated. The timing of the actuation of said electrically actuated valves (8, 9) is varied depending on the fluid flow demand.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: June 26, 2012
    Assignees: Sauer-Danfoss ApS, Artemis Intelligent Power Ltd.
    Inventors: Onno Kuttler, Ken Kin-ho Lai
  • Patent number: 8197238
    Abstract: A pump apparatus includes a drive shaft supported rotatably in a pump body; a power transmission member attached to the drive shaft, and configured to transmit power to the drive shaft; a pump element configured to pressurize and discharge working fluid; a discharge passage formed in the pump body, and configured to introduce the pressurized working fluid-discharged from the pump element to an external of the pump body; a control valve configured to control an amount of working fluid to be discharged through the discharge passage to the external, by controlling a movement of a valving element of the control valve on the basis of the pressurized working fluid; and an electromagnetic valve provided between the power transmission member and the control valve, and configured to control the control valve or a fluid pressure acting on the valving element of the control valve based on the pressurized working fluid.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: June 12, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Shigeaki Yamamuro, Hideo Konishi
  • Patent number: 8197224
    Abstract: To improve the fluid output flow characteristics (14) of a synthetically commutated hydraulic pump (1), it is suggested to use a plurality of different valve (10) actuation strategies. For every fluid flow demand region I to VI a certain actuation strategy is chosen.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: June 12, 2012
    Assignees: Sauer-Danfoss ApS, Artemis Intelligent Power Ltd.
    Inventors: Onno Kuttler, Ken Kin-ho Lai
  • Patent number: 8197223
    Abstract: When the fluid flow output of a synthetically commutated hydraulic pump is adapted to a given fluid flow demand, pulsations in the fluid output flow of the synthetically commutated hydraulic pump can occur. To avoid such pressure pulsations, it is suggested, to use a set of pre-calculated actuation patterns for actuating the electrically commutated valves of the synthetically commutated hydraulic pump.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: June 12, 2012
    Assignees: Sauer-Danfoss ApS, Artemis Intelligent Power Ltd.
    Inventors: Onno Kuttler, Ken Kin-ho Lai
  • Patent number: 8177526
    Abstract: Power and control logic configurations for gas well dewatering systems are provided. In one example, a reservoir is configured to contain hydraulic, lubricating fluid. An electric motor is configured to receive fluid from the reservoir for lubrication and a hydraulic pump powered by the electric motor is configured to receive fluid from the reservoir and pump the fluid into a hydraulic circuit. A positive displacement oscillating pump is powered by the hydraulic pump and configured to pump fluid from the reservoir to an outlet from the well. The electric motor and hydraulic pump receive the same fluid from the reservoir for lubrication and to create pressure in the hydraulic circuit, respectively.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: May 15, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Michael A. Dowling, Jason Kamphaus, Harryson Sukianto, Alain P. Dorel, John David Rowatt, Arthur I. Watson
  • Patent number: 8167593
    Abstract: Systems and methods for pumping fluid comprising a pumping chamber, a pump inlet, a pump outlet, a valving mechanism, and a drive piston or pumping chamber wall including a deformable surface configured to provide elastohydrodynamic lubrication during operation.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: May 1, 2012
    Assignee: The Board of Regents of the University of Texas System
    Inventors: Jeffrey R. Gohean, Thomas D. Pate, Raul G. Longoria, Richard Smalling
  • Publication number: 20120093670
    Abstract: The present invention eliminates a valve holder and accommodates a valve guide in a small space provided between a valve seat and a peripheral surface part of a pressure chamber to reduce the size of a pump. The valve guide guides a stroke of the valve and is provided inside the valve seat. The valve includes an annular abutting surface that abuts a valve seat formed in a valve housing to shut off a fuel intake passage and a bottomed cylindrical part is provided at an inner peripheral part of the annular abutting surface. The bottomed cylindrical part is inserted into a fuel introduction hole formed in the valve housing inside the valve seat. A member having a cylindrical surface part that supports a reciprocating motion of the valve, is fixed to the valve housing, face-to-face with an inner peripheral part of the bottomed cylindrical part.
    Type: Application
    Filed: October 13, 2011
    Publication date: April 19, 2012
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Satoshi USUI, Kenichiro Tokuo, Tatsuo Kawano, Masahiko Hayatani, Shingo Tamura, Hiroyuki Yamada, Katsumi Miyazaki
  • Patent number: 8052405
    Abstract: A high pressure pump draws fluid from a fluid inlet into a compression chamber through an inlet chamber. The high pressure pump has a fluid chamber that communicates with the fluid inlet via the inlet chamber. The high pressure pump includes a plunger and a cylinder. The plunger draws fluid from the inlet chamber into the compression chamber when the plunger moves in a drawing direction. The plunger is capable of pressurizing fluid in the compression chamber when the plunger moves in a pressurizing direction. The cylinder movably supports the plunger therein. When the plunger moves in the drawing direction, fluid in the inlet chamber is drawn into the compression chamber, so that fluid flows from the fluid chamber into the inlet chamber.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: November 8, 2011
    Assignee: Denso Corporation
    Inventor: Hiroshi Inoue
  • Patent number: 8052404
    Abstract: A high pressure pump draws fluid from a fluid inlet into a compression chamber through an inlet chamber. The high pressure pump has a fluid chamber that communicates with the fluid inlet via the inlet chamber. The high pressure pump includes a plunger and a cylinder. The plunger draws fluid from the inlet chamber into the compression chamber when the plunger moves in a drawing direction. The plunger is capable of pressurizing fluid in the compression chamber when the plunger moves in a pressurizing direction. The cylinder movably supports the plunger therein. When the plunger moves in the drawing direction, fluid in the inlet chamber is drawn into the compression chamber, so that fluid flows from the fluid chamber into the inlet chamber.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: November 8, 2011
    Assignee: Denso Corporation
    Inventor: Hiroshi Inoue
  • Publication number: 20110097228
    Abstract: The present invention relates to a high-pressure fuel supply pump comprising a compression chamber, a plunger reciprocating in the compression chamber for pressurizing fuel in the compression chamber, a discharge valve for discharging pressurized fuel from the compression chamber to a high-pressure fuel passage of a high-pressure fuel supply system for supplying high-pressure fuel to an internal combustion engine, and a first solenoid actuated valve for connecting and disconnecting a first low-pressure fuel passage and the compression chamber, wherein the first solenoid actuated valve is biased by a first biasing member in a closing direction of the first solenoid actuated valve, and the first solenoid actuated valve is opened or kept open against the biasing force of the first biasing member, when the first solenoid actuated valve is energized.
    Type: Application
    Filed: October 14, 2010
    Publication date: April 28, 2011
    Applicant: Hitachi, Ltd.
    Inventors: Kenichiro TOKUO, Jonathan BORG
  • Publication number: 20110070113
    Abstract: Systems, methods, and devices are disclosed, including a compressor having a piston and a valve assembly. In some embodiments, the valve assembly includes a check valve having a valve member, a magnet coupled to the valve member, and an electrical conductor near the magnet. The check valve may be configured to change state in response to a change in fluid pressure. The compressor may also have an electric device coupled to the electrical conductor.
    Type: Application
    Filed: June 1, 2009
    Publication date: March 24, 2011
    Applicant: Cameron International Corporation
    Inventor: Zahroof Mohamed
  • Publication number: 20110020159
    Abstract: In usual hydraulic pumps, a separate assembly opening is provided for every valve of the hydraulic pump. This design causes sealing problems. It is proposed, that the fluid inlet valve (67) and the fluid outlet valve (74) can be assembled through a common assembly access port (38).
    Type: Application
    Filed: October 29, 2008
    Publication date: January 27, 2011
    Inventors: Onno Kuttler, Uwe Stein
  • Publication number: 20100303657
    Abstract: A fluid working machine (1) has several working chambers (5) of cyclically changing volume. For pumping hydraulic fluid, the inlet and outlet valves (8, 9) are electrically actuated. The timing of the actuation of said electrically actuated valves (8, 9) is varied depending on the fluid flow demand.
    Type: Application
    Filed: October 29, 2008
    Publication date: December 2, 2010
    Applicant: SAUER-DANFOSS APS
    Inventors: Onno Kuttler, Ken Kin-ho Lai
  • Publication number: 20100303638
    Abstract: When the fluid flow output of a synthetically commutated hydraulic pump is adapted to a given fluid flow demand, pulsations in the fluid output flow of the synthetically commutated hydraulic pump can occur. To avoid such pressure pulsations, it is suggested, to use a set of pre-calculated actuation patterns for actuating the electrically commutated valves of the synthetically commutated hydraulic pump.
    Type: Application
    Filed: October 29, 2008
    Publication date: December 2, 2010
    Applicant: Sauer-Danfoss Aps
    Inventors: Onno Kuttler, Ken Kin-ho Lai
  • Publication number: 20100296948
    Abstract: To improve the fluid output flow characteristics (14) of a synthetically commutated hydraulic pump (1), it is suggested to use a plurality of different valve (10) actuation strategies. For every fluid flow demand region I to VI a certain actuation strategy is chosen.
    Type: Application
    Filed: October 29, 2008
    Publication date: November 25, 2010
    Applicant: Sauer-Danfoss ApS
    Inventors: Onno Kuttler, Ken Kin-ho Lai
  • Patent number: 7837447
    Abstract: A chemistry analyzer precision pump is disclosed. In one general aspect, it has a pump block that defines a first pump chamber with a fluid port at a first end, an opening for a piston at a second end, and a seal mount located between the opening and the port. A second, smaller, pump chamber also has a fluid port at a first end, an opening for a piston at a second end, and a seal mount located between the opening and the port. A first seal is mounted at the first seal mount and a second seal is mounted at the second seal mount. A first piston is mounted to reciprocate in the first pump chamber, past the first seal, and a second, smaller piston is mounted to reciprocate in the second pump chamber, past the second seal. The first and second pistons and the first and second pump chambers can be conically shaped.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: November 23, 2010
    Assignee: Medica Corporation
    Inventors: Tony Mao, Ronald Jones, Stanley Liffmann