Expansible Chamber Type Patents (Class 417/437)
  • Patent number: 10947942
    Abstract: A high-pressure fuel pump for a fuel injection system of an internal combustion engine includes a pump housing and at least one fastening flange that is fixed to the pump housing by a welding. The welding has one weld region and at least one weld bead arranged laterally from the weld region. The weld bead is arranged in a receiving space formed between the pump housing and the fastening flange.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: March 16, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Soeren Stritzel, Erich Buerner, Peter Ropertz
  • Patent number: 10900501
    Abstract: Hydraulic pressure booster and method includes a low-pressure segment including a hydraulic cylinder and a hydraulic piston, which is displaceable in both axial directions of the hydraulic cylinder and opposing high-pressure segments located on each axial end of the low pressure segment. Each high-pressure segment includes a plunger piston movable in a high-pressure cylinder via the hydraulic piston. Each high-pressure cylinder is arranged in a clamping sleeve, both of which are positioned between the hydraulic cylinder and a valve body. For each high-pressure segment, a clamping piston, which includes a pressure surface applying pressure to the high pressure cylinder and a high pressure seal for the plunger piston and a pressure surface on which pressure from the hydraulic piston is applied, is axially displaceable in the hydraulic cylinder so that the high-pressure cylinder is in compressive contact with the hydraulic cylinder and the valve body.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: January 26, 2021
    Assignee: BFT GMBH
    Inventor: Franz Trieb
  • Patent number: 10731616
    Abstract: A high-pressure fuel supply pump comprising a suction valve disposed on a suction side of a pressurizing chamber, an engagement member having a protrusion part that protrudes toward the outer periphery and biasing the suction valve by use of the force of a spring, a stator for generating a magnetic attraction force, and a plunger drawn by the magnetic attraction force and driving the engagement member toward the stator by engaging with the protrusion part, the fuel supply pump being configured so that the area of the fuel passage is smallest between the outer periphery of the protrusion part and the inner periphery of the plunger, and so that a tapered section whereby the area of the flow path increases from the portion where the area of the passage is smallest toward the pressurizing chamber or toward the suction valve side is formed.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: August 4, 2020
    Assignee: Hitachi Automotive Systems Ltd.
    Inventors: Yuitsu Kodama, Yukihiro Yoshinari, Kenichiro Tokuo, Yuuki Takahashi
  • Patent number: 10640186
    Abstract: Systems and methods are disclosed herein for an inflation pouch. The inflation pouch may include a border on a first end and a nozzle on a second end, wherein the border defines an interior volume of the inflation pouch, and the interior volume is in fluid communication with the nozzle. The border further comprises a zipping fastener or a hook and loop fastener. The nozzle may couple with an inflation valve of an inflatable structure. The interior volume of the inflation pouch is in fluid communication with an interior volume of the inflatable structure.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: May 5, 2020
    Assignee: Goodrich Corporation
    Inventors: Timothy C Haynes, Drew Hartman
  • Patent number: 10561508
    Abstract: A vacuum suspension system includes a foot cover having a heel portion and a pump system located in the heel portion. The pump system includes upper and lower sections arranged to move in an axial direction relative to one another and a pump mechanism operatively connected to and positioned between the upper and lower sections. When the heel portion is loaded in stance the pump mechanism moves from an original configuration in which the volume of a fluid chamber defined by the pump mechanism is zero or near-zero, to an expanded configuration in which the volume of the fluid chamber is increased.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: February 18, 2020
    Inventors: Atli Orn Sverrisson, Larus Gunnsteinsson, Gudfinna Halldorsdottir, Hafsteinn Jonasson, Dadi Granz, Dana Stewart Marlin
  • Patent number: 10556049
    Abstract: A cardiac assist device is provided. The cardiac assist device may comprise a structure surrounding at least a portion of a heart. The cardiac assist device may comprise an inner cup enclosing at least a portion of the structure. The cardiac assist device may comprise an outer cup enclosing at least a portion of the inner cup. The outer cup may comprise an opening. Gas may be conducted into a space between the outer cup and the inner cup, using a pump, to cause a first motion of the structure, associated with a first rotation of a first portion of the heart in a first direction. The gas may be conducted from the space to outside of the outer cup, using the pump, to cause a second motion of the structure, associated with a second rotation of the first portion of the heart in a second direction.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: February 11, 2020
    Inventors: Mahdi Daliri Rezagholi Gheshlaghi, Seyed Javad Hosseini Hooshyar, Mona Yadollahi
  • Patent number: 10487631
    Abstract: A pump for extraction of water, petroleum or other fluids from thousands of meters of depth is a reciprocating pump that reduces the incidence of piston seizures and, furthermore, gas locks that block fluid from entering the pump. When the pump is introduced into a well casing or tubing, a sleeve of the pump latches to the well casing or tubing and allows a hollow piston to travel therein in a reciprocating motion for fluid extraction. A traveling valve is located in the hollow piston and fixed valve is seated in the well casing or tubing. The sleeve length is less than the length of the hollow piston. In a preferred embodiment, passages are provided for releasing gases.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: November 26, 2019
    Inventors: Daniel Rodolfo Lopez Fidalgo, Luis Alfonso Pabon Pernia
  • Patent number: 10428954
    Abstract: The fluid-cushion sealing device (100) for a piston (101) moving in a cylinder (102) and defining with the latter a chamber to be sealed (104) includes: a continuous perforated ring (105) through the radial thickness of which passes a calibrated opening (111) and which is sealingly accommodated in a ring groove (109) provided in the piston (101) so as to define, with the groove (109), a pressure distribution chamber (119) connected to a pressurized fluid source (112), while an axially blind counter-pressure recess (115) is provided recessed on an external cylindrical ring surface (107) which faces the cylinder (102) and which the continuous perforated ring (105) includes, the calibrated opening (111) leading into the recess (115).
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: October 1, 2019
    Inventor: Vianney Rabhi
  • Patent number: 10364658
    Abstract: A fluid pump apparatus for an artificial lift system has a barrel, a standing valve positioned at a lower end of the barrel, a plunger reciprocatingly mounted within the barrel, and a traveling valve positioned in an interior of the plunger so as to control fluid flow through the plunger. The barrel has an opening at a top thereof and an opening at a lower end thereof. The standing valve is movable between an open position and a closed position. The plunger has a first aperture at an upper portion of the plunger and a second aperture extending through a wall of the plunger so as to open to a channel extending longitudinally through the plunger. The traveling valve has a head portion of the body extending downwardly from the head portion. The body is slidably movable within an interior of the plunger. The body has a fluid-passing channel therein that opens to an exterior of the body.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: July 30, 2019
    Inventor: William Michel
  • Patent number: 10265470
    Abstract: There is provided a device for automatic synchronized injection and aspiration of fluids comprising: a first linear actuator; a second linear actuator; a first coupling mechanism attached at a distal end portion of the first linear actuator, the first coupling mechanism arranged for detachable coupling to a first plunger of a first syringe; a second coupling mechanism attached at a distal end portion of the second linear actuator, the second coupling mechanism arranged for detachable coupling to a second plunger of a second syringe; and a synchronization mechanism mechanically coupled to the first and second linear actuators, the mechanism arranged so that insertion of the first plunger further into a first barrel of the first syringe is synchronized with extraction of the second plunger from a second barrel of the second syringe, thereby injection from the first syringe is synchronized with aspiration into the second syringe.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: April 23, 2019
    Assignee: V.V.T. Med Ltd.
    Inventor: Zeev Brandeis
  • Patent number: 10190460
    Abstract: A device for releasing reactant (R) into the exhaust gas stream (A) of an internal combustion engine, includes a reactant injection unit (20), a reactant delivery unit (12) for delivering reactant (R) from a reactant reservoir (14) to the reactant injection unit (20), and a heating unit (18) for heating reactant (R) delivered by the reactant delivery unit (12) to the reactant injection unit (20). The reactant injection unit (20) is switchable as a function of a reactant pressure generated by the reactant delivery unit (12) between an open state for releasing reactant (R) and a locked state for preventing the release of reactant.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: January 29, 2019
    Assignee: Eberspächer Exhaust Technology GmbH & Co. KG
    Inventor: Gerd Gaiser
  • Patent number: 10156230
    Abstract: A diaphragm type fuel pump includes a rod, one end of which is coupled to a diaphragm, a plunger which is slidably fitted with respect to the other end of the rod, and a plunger biasing member which biases the plunger toward the other end of the rod. The other end of the rod has a first pin extending outward radially. A through hole extends through the plunger in a radial direction. The through hole has a size which allows the first pin to move in a longitudinal direction of the rod. The first pin is in contact with one edge of the through hole. A gap is formed between another edge of the through hole and another end surface of the rod. A second pin in parallel to the first pin can be fitted into the gap.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: December 18, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Tomohiro Miyauchi
  • Patent number: 10107245
    Abstract: A plunger fuel pump for an internal combustion engine includes a pump cylinder and a pump plunger that is axially displaceable in the pump cylinder. The plunger fuel pump has a seal with an annular basic structure arranged around the circumference of the pump plunger. The seal is produced by injection molding in an axial injection direction.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: October 23, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Oliver Albrecht, Soeren Stritzel, Tobias Schenk, Heiko Jahn
  • Patent number: 10054185
    Abstract: Methods and apparatus for position sensitive dampening. In one aspect a fluid damper is provided comprising a damper chamber divided by a piston into a primary compression and a primary rebound chamber; a secondary compression chamber in fluid communication with the damper chamber; and an adjustable fluid meter controlling fluid flow out of the secondary compression chamber.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: August 21, 2018
    Assignee: Fox Factory, Inc.
    Inventor: Christopher Paul Cox
  • Patent number: 10047743
    Abstract: A high pressure pump for delivering a fluid includes a pump housing with a longitudinal axis and a housing cavity, a piston partly arranged in the housing cavity and axially moveable within the housing cavity and having an axial end directed opposite a driving side of the high pressure pump, and a sealing unit having a sealing body arranged radially outside of the piston such that a first part of the housing cavity is sealed fluid-tight against a second part of the housing cavity. The sealing body includes a neck with an inner diameter smaller than a first diameter of a part of the piston arranged between the sealing body neck and the axial end of the piston. The piston has a second diameter in an axial area in which the sealing body neck is arranged, which second diameter is smaller than the first diameter.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: August 14, 2018
    Inventors: Uday Bhat, Ngoc-Tam Vu, Thejesh Kumar Magadibyredevaru, Marcin Olik
  • Patent number: 9857029
    Abstract: The invention relates to a pressure vessel comprising a heat exchanger for a cryogenically stored medium, especially for use in a motor vehicle, especially for use as a pressure tank for hydrogen. Said pressure vessel includes a cylindrical jacket and rounded-off end faces which are rolled onto the ends of the jacket and which have centrally arranged openings closed by welded-in inserts, at least one first insert having filling and removal devices. The invention is characterized in that the inserts form bearings on which at least one in-tank heat exchanger is mounted.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: January 2, 2018
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Bastian Landeck, Klaus Szoucsek
  • Patent number: 9539084
    Abstract: Disclosed is a device and method for repairing a partially or totally ruptured tendon. The device comprises an implant placed inside or outside of the tendon on either side of the rupture in order to strengthen the ruptured area during repair. Once positioned inside the tendon, the tendon is held in place so it can heal either by sewing or stapling through the tendon and implant, or by any other suitable method that utilizes the implant to provide strength to the ruptured area. In this manner the tendon can heal with less chance of rupturing again prior to healing.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: January 10, 2017
    Assignee: Exsomed International IP. LLC
    Inventors: Lloyd P. Champagne, Jozef Zoldos
  • Patent number: 9535058
    Abstract: A flow chamber and method for detecting the presence of one more cell produced analytes under flow conditions. The flow chamber includes two compartments separated by a permeable membrane on which a plurality of cells may be positioned. The permeable membrane shields one or more analyte sensors positioned one compartment from the convective transport forces of a fluid flow within the other compartment to allow reliable and accurate detection of cell-produced analytes and determination of the concentration of cell-produced analytes.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: January 3, 2017
    Assignee: Drexel University
    Inventors: Dov Jaron, Kenneth A. Barbee, Allison M. Andrews
  • Patent number: 9528397
    Abstract: A mechanical system forming a cam follower or a rocker arm; the mechanical system including a support element, a pin extending between two opposite ends along a first axis and supported by the support element, and a roller mounted on the pin, movable in rotation relative to the pin around the first axis and adapted to roll on a cam. The mechanical system further includes an insert made from separate parts and including holding members supporting the pin ends.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: December 27, 2016
    Inventors: Nicolas Berruet, François Champalou, Benoît Hauvespre, Guillaume Jouanno, Samuel Viault
  • Publication number: 20150132166
    Abstract: A high-pressure pump includes a plunger, a cylinder, a pressuring chamber, a pump body, a main fuel chamber, an auxiliary fuel chamber and a return passage. The cylinder slidably houses the plunger therein. Fuel is pressurized inside the pressurizing chamber by sliding movement of the plunger. The pump body houses the cylinder and has an end surface on an opposite side of the pump body relative to the pressurizing chamber in an axial direction. The main fuel chamber is disposed inside the pump body into which fuel is supplied. The auxiliary fuel chamber has a side defined by one end of the cylinder on an opposite side of the cylinder relative to the pressurizing chamber. The return passage is disposed inside the pump body and is in fluid communication with an external cooling unit.
    Type: Application
    Filed: November 12, 2014
    Publication date: May 14, 2015
    Inventors: Hideaki UKAI, Eiji ITOH, Hiroshi INOUE
  • Publication number: 20150125327
    Abstract: A pumping device includes a frame body, a pump body, a piston rod, a drive shaft, a main guiding member, a carrier block, a plug unit, and a rotary-to-linear motion conversion mechanism disposed between the carrier block and the drive shaft so as to convert rotation of the drive shaft to linear motion of the carrier block. A shaft axis of the drive shaft and a piston axis of the piston rod cooperatively define a vertical plane. A bottom surface of the carrier block is guided by the main guiding member and defines a bottom plane which is orthogonal to the vertical plane.
    Type: Application
    Filed: October 30, 2014
    Publication date: May 7, 2015
    Inventors: Chung-Lin Liao, Gene Chen
  • Publication number: 20150104337
    Abstract: A pump assembly for use within a high pressure pumping system includes housing, a head and a base. The housing contains at least one centrifugal pump stage. The head and base are attached to the housing with corresponding internal threaded connections. The head and base are further retained to the housing with corresponding external flanged connections. The external flanged connections provide redundant connections that reduce the risk of separation between the housing and the head and base.
    Type: Application
    Filed: October 15, 2013
    Publication date: April 16, 2015
    Applicant: GE Oil & Gas ESP, Inc.
    Inventors: Matthew Allen Schoelen, Chengbao Wang, Colby Lane Loveless, Vishal Gahlot, Mark James
  • Publication number: 20150098848
    Abstract: A high-pressure fuel pump includes a pump housing, a pressurizing member, a suction valve seat, a suction valve body, and a suction valve chamber. The suction valve seat includes a first projected wall section that is projected to an upper side in a vertical direction. The pump housing includes a second projected wall section that is directed to the upper side in the vertical direction. A height of the lowest position in a portion of the second projected wall section that is projected to the upper side in the vertical direction is higher than a height of the lowest position in a portion of the first projected wall section that is projected to the upper side in the vertical direction. A first initial fuel pool is provided on an downstream side of the second projected wall section and on the upstream side of the suction valve seat.
    Type: Application
    Filed: October 3, 2014
    Publication date: April 9, 2015
    Inventor: Yoshikazu Kato
  • Publication number: 20150086399
    Abstract: Hydraulic pump distributor sealing ring (1) for a hydraulic distributor (2) of a hydraulic pump (44), includes a continuous sealing ring (11) housed in a ring groove (16) formed in a pump stator (3) whose inlet-delivery ports (7) are each aligned with a distribution opening (21) passing right through the ring (11) in the direction of its thickness, this ring including a circumferential-contact boss (14) which has a circumferential line of contact (15) that can come into contact with a rotor-side low-pressure sealing surface (13), the ring (11) also including a compression-decompression track (24), a ring sealing lip (39) that provides sealing between the ring (11) and the ring groove (16), and rotation-proofing elements (36).
    Type: Application
    Filed: September 19, 2014
    Publication date: March 26, 2015
    Inventor: Vianney RABHI
  • Publication number: 20150086397
    Abstract: A micropump and a disposable pump body thereof are disclosed. The micropump includes the pump body and an actuator device. The pump body includes a chamber, an inlet communicating with the chamber, an outlet communicating with the chamber and a covering membrane on top of the chamber. The actuator device includes an actuator and a transmitting post. One of the two ends of the transmitting post connects to the actuator. The other end of the transmitting post abuts against the membrane. Since the pump body is separated from the actuator device, the pump body is disposable and can be replaced after use to avoid cross-infection of disease, particularly useful for medical liquid delivery.
    Type: Application
    Filed: September 19, 2014
    Publication date: March 26, 2015
    Inventor: Hsiao-Kang MA
  • Publication number: 20150086400
    Abstract: Disclosed herein is a valve assembly for a variable swash plate compressor. Since an opening hole of a suction reed is enlarged toward a suction port of a valve plate and refrigerant is also introduced into a cylinder bore through the opening hole when the suction port is opened, performance of a compressor may be enhanced by an increase in flow rate.
    Type: Application
    Filed: September 23, 2014
    Publication date: March 26, 2015
    Inventors: Sang Woo Bae, Eun Gi Son, Je Su Yun, Se Young Song, Young Seop Yoon, Sung Myung Lee, Hew Nam Ahn, Seung Taek Lim
  • Publication number: 20150075498
    Abstract: A fuel pump is disclosed. The fuel pump includes a housing. Further, the fuel pump includes a rotatable pump shaft disposed within the housing. One end of the rotatable pump shaft is attachable to a gear. The housing also includes a retainer disposed within the housing and located about the pump shaft. The retainer includes a first rim and a second rim that are spaced apart from each other. The retainer also includes a side wall extending between the first and the second rims. Further, the side wall of the retainer defines a first volume and a second volume within the housing. The side wall of the retainer has a plurality of apertures configured to allow a fluid flow from the first volume to the second volume while retaining particulate contaminants larger than a size of the apertures within the first volume.
    Type: Application
    Filed: September 17, 2013
    Publication date: March 19, 2015
    Applicant: Caterpillar Inc.
    Inventors: John W. Unes, Eric Krause, Steven R. Meinhart, David C. Mack
  • Patent number: 8968232
    Abstract: Embodiments of the present invention relate generally to heat-exchanger systems that can be used to heat or cool a fluid such as blood. Pod pumps that provide low shear and low turbulence may be used in such systems, particularly for systems that pump blood. A certain heat-exchanger system used to heat blood or other fluids may be used to provide whole-body hyperthermic treatments or regional hyperthermic chemotherapy treatments. A disposable unit may be used to separate the fluid path from the fluid control systems. The disposable unit typically includes a heat-exchanger component that is received by a corresponding heat exchanger in a base unit. Fluid pumped through the heat-exchanger component is heated by the heat exchanger.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: March 3, 2015
    Assignee: DEKA Products Limited Partnership
    Inventors: Dean Kamen, Jason A. Demers, David E. Altobelli, Larry B. Gray, N. Christopher Perry, Brian Tracey, James D. Dale, Dirk A. van der Merwe, Kingston Owens
  • Patent number: 8936446
    Abstract: A sliding inflator with inner and outer cylinders is provided. The outer cylinder has a fixing element with an axial pipe protruding therefrom and having two through holes. A rotating element is disposed around the axial pipe and has two receiving chambers matching the through holes, respectively, and receiving a ball each. A gradually-deepened curved portion of the receiving chamber is defined between shallow and deep ends thereof. The rotating element rotates between an unlocked position and a locked position. A stopping element is fixed to the inner cylinder and has a protruding post with an annular groove. The rotating element switches from the unlocked position to the locked position to couple the cylinders together, and switches from the locked position to the unlocked position to release engagement between the cylinders.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: January 20, 2015
    Assignee: Beto Engineering and Marketing Co., Ltd.
    Inventor: Lopin Wang
  • Publication number: 20150013351
    Abstract: A reciprocating cryogenic pump 2 comprises a piston reciprocable within a pumping chamber 44. The pumping chamber 44 has an inlet suction valve 48 for cryogenic liquid to be pumped and an outlet 32 for high pressure cryogenic liquid. The inlet valve 48 for the cryogenic liquid communicates with a cryogenic liquid reception chamber 46 in the cold end or head 6 of the pump 2. The pump head 6 is at least partially surrounded by a first jacket 8 retaining primary vacuum insulation. The first jacket 8 is itself at least partly surrounded by a second jacket 10. The jacket 10 defines a chamber for the reception of a coolant fluid such as liquid nitrogen and the second jacket has an inlet 20 and an outlet 22 for the liquid nitrogen. The thermal insulation can be further enhanced by a trapped gas space 73 between the first jacket 8 and an inner sleeve 52, the latter defining with an outer sleeve 50 vacuum insulation for the pumping chamber 44.
    Type: Application
    Filed: November 26, 2012
    Publication date: January 15, 2015
    Inventors: Pierre Papirer, Stephane Sgambati
  • Publication number: 20140377108
    Abstract: A piston head for a syringe pump comprises a barrier portion (11) for driving fluid through a syringe pump barrel (30), wherein a peripheral section (13,14) of the barrier portion (11) is shaped to seal against the syringe pump barrel (30); and a re-silent member (15) arranged to resist deformation of the shaped peripheral section (13,14) of the barrier portion (11).
    Type: Application
    Filed: September 11, 2012
    Publication date: December 25, 2014
    Inventors: Anthony Jones, Jonathan Upsdell
  • Publication number: 20140377107
    Abstract: The present disclosure relates to a hermetic compressor with a discharge pulsation reducing member mounted therein, the hermetic compressor including a case; a cylinder block disposed in the case; a discharge muffler disposed on the upper portion of the cylinder block and having a first chamber and a separate second chamber to reduce the pulsating components of the discharged refrigerant, the first chamber and the second chamber being connected to each other by a connection passage inside the discharge muffler; and the discharge pulsation reducing member fixed in the connection passage and having a pulsation reducing passage formed along the outer peripheral surface thereof.
    Type: Application
    Filed: May 21, 2013
    Publication date: December 25, 2014
    Applicant: Dongbu Daewoo Electronics Corporation
    Inventor: Yong Seok Lee
  • Publication number: 20140363322
    Abstract: A cylinder cover for alternative compressor comprises a block (1) provided with at least a sealing contour (11) and at least a support projection (3) for supporting a discharge valve stop. Said support projection (3) is spaced from the sealing contour (11) through at least one gap (4).
    Type: Application
    Filed: November 8, 2012
    Publication date: December 11, 2014
    Inventors: Raul Bosco Junior, Moacir Pirovano, Tadeu Tonheiro Rodrigues
  • Publication number: 20140356201
    Abstract: A fluid end assembly comprising a fluid end housing with multiple discharge manifold ports. Embodiments of the disclosure provide a fluid end assembly that overcomes problems associated with prior art single port discharge manifold designs that result in non-symmetrical flow of discharged fluids through the fluid end discharge valves, resulting in premature failure of said valves. The multiple port manifolds of the present disclosure overcome problems associated with non-symmetrical flow of discharged fluids through a fluid end discharge valve, thereby improving valve life and performance.
    Type: Application
    Filed: June 3, 2013
    Publication date: December 4, 2014
    Inventor: George H. Blume
  • Publication number: 20140348676
    Abstract: A valve seat member which partitions between a supply passage and a pressurizing chamber, includes an inner flow path, which communicates between the supply passage and the pressurizing chamber, and an outer flow path, which is placed on a radially outer side of the inner flow path. An inner valve is seatable against inner valve seat formed in an opening of the inner flow path. An outer valve is contactable with an end surface of the inner valve, which is opposite from the inner valve seat. The outer valve is seatable against an outer valve seat, which is formed in an opening of the outer flow path.
    Type: Application
    Filed: May 22, 2014
    Publication date: November 27, 2014
    Applicant: Denso Corporation
    Inventors: Takehiko KATO, Shinichiro Koshimoto, Osamu Hishinuma, Yutaka Miyamoto
  • Publication number: 20140334954
    Abstract: A wear-resistant air pump includes a cylinder, a piston and rod set inserted in the cylinder and movable back and forth between two opposite ends of the cylinder, an air nozzle head located at one end of the piston and rod set outside the cylinder and opposite to the piston of the piston and rod set and adapted for connection to an air valve of an inflatable object, and a wear-resistant structure provided between the piston and the cylinder for bearing a relative reciprocating motion between the piston and the cylinder to prolong the lifespan of the air pump.
    Type: Application
    Filed: May 8, 2013
    Publication date: November 13, 2014
    Applicant: Shou Meng Enterprise Co., Ltd.
    Inventor: Jung-Chou TSAO
  • Patent number: 8882480
    Abstract: In an oil pump for an automatic transmission, a suction port is adapted to be connected to a first suction passage. The first suction passage is arranged in parallel with a second suction passage connected to an auxiliary pump. The first and second suction passages branch from an upstream suction passage leading to an oil strainer. A discharge outlet is adapted to be connected to a first discharge passage. An air vent hole is disposed downstream of the suction port and upstream of the discharge outlet. A communication passage is connected to the air vent hole and adapted to reach a predetermined oil level in an oil pan so as to communicate the air vent hole with inside of oil in the oil pan.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: November 11, 2014
    Assignees: Jatco Ltd., Nissan Motor Co., Ltd.
    Inventor: Tomohiro Oomura
  • Publication number: 20140328695
    Abstract: A pump including a cylinder body having first and second ends and a cylinder bore, a plug shaft including first and second ends and a plug shaft bore, wherein the first end of the plug shaft is fixed relative to the cylinder body, and wherein the second end of the plug shaft includes a stop, a first piston received within the cylinder bore to partially bound a first gas chamber and a hydraulic fluid chamber, the first piston being received over the plug shaft and axially moveable relative to the plug shaft, a socket shaft including first and second ends and a socket shaft bore, the socket shaft bore being configured to sealingly receive the plug shaft, a second piston received within the cylinder bore to partially bound a second gas chamber and the hydraulic fluid chamber, the second piston being connected to the socket shaft.
    Type: Application
    Filed: May 2, 2013
    Publication date: November 6, 2014
    Applicant: The Boeing Company
    Inventor: The Boeing Company
  • Publication number: 20140328699
    Abstract: A piston pump for a high-pressure cleaning appliance is provided, including a pump block having a plurality of pump chambers, into each of which one piston plunges, and including a pump head having a suction inlet and a pressure outlet, each pump chamber in flow connection via a suction valve with the suction inlet and via a pressure valve with the pressure outlet, and including a clamping bracket engaging around the pump head. The piston pump can have a single U-shaped clamping bracket oriented symmetrically in relation to the longitudinal pump axis, and the pump head and the pump block form between them downstream of the pressure valves a pressure chamber in which a central, piston-like insert part is arranged, the insert part being surrounded by a sealing element and having a passage, and a pressure line oriented coaxially with the longitudinal pump axis being arranged downstream of the passage.
    Type: Application
    Filed: July 17, 2014
    Publication date: November 6, 2014
    Inventor: Robert Nathan
  • Publication number: 20140322033
    Abstract: A fluid end 15 for a multiple reciprocating pump assembly 12 comprises at least three plunger bores 61 or 91 each for receiving a reciprocating plunger 35, each plunger bore having a plunger bore axis 65 or 95. Plunger bores being arranged across the fluid head to define a central plunger bore and lateral plunger bores located on either side of the central plunger bore. Fluid end 15 has suction valve bores 59 or 89, each suction valve bore receiving a suction valve 41 and having a suction valve bore axis 63 or 93. Discharge valve bores 57 or 87, each discharge valve bore receiving a discharge valve 43 and having a discharge valve bore axis 63 or 93. The axes of at least one of suction and discharge valve bores is inwardly offset in the fluid end from its respective plunger bore axis.
    Type: Application
    Filed: March 3, 2014
    Publication date: October 30, 2014
    Applicant: S.P.M. Flow Control, Inc.
    Inventors: Jacob A. Bayyouk, Donald Mackenzie
  • Publication number: 20140322050
    Abstract: A pump system that has a power end and a fluid end assembly. The fluid end assembly includes a plunger configured to translate within a plunger bore. The fluid end further includes a suction valve assembly and a discharge valve assembly. The power end is configured to use a pony rod to induce movement of the plunger within the fluid end assembly to generate a pressure differential. The suction valve assembly and the discharge assembly operate in response to the pressure differential to move the fluid. A straight valve seal is located within the suction valve assembly and/or the discharge valve assembly to distribute forces incurred by movement of valves within the fluid end assembly.
    Type: Application
    Filed: November 13, 2012
    Publication date: October 30, 2014
    Inventors: Michael David Marette, Saul Dominguez
  • Publication number: 20140314595
    Abstract: A reservoir includes first and second chambers, and a piston having first and second ends disposed in the first and second chambers, respectively. The first and second ends isolate a first area from a second area within the first and second chambers. The first area of the first chamber is in fluid communication with a high pressure fluid source and the second area of the first chamber is in fluid communication with a low pressure fluid source. An orifice is formed in the first end and is configured to allow fluid communication between the upper and lower areas of the first chamber. A pumping system and an aircraft are also disclosed.
    Type: Application
    Filed: April 18, 2013
    Publication date: October 23, 2014
    Inventors: David L. Wakefield, Charles E. Reuter
  • Publication number: 20140314593
    Abstract: A pump includes a drive assembly having a drive shaft rotatable about a drive axis, and an eccentric coupled to the drive shaft for rotation therewith. The eccentric includes a shaft portion defining an eccentric axis that is offset from the drive axis. The shaft portion includes a shaft end defining a first alignment feature. A piston is rotatably coupled to the shaft portion and defines a second alignment feature. A cylinder reciprocatingly receives the piston. Positioning the first alignment feature in a predetermined orientation with respect to the second alignment feature locates the piston in one of a top-dead-center position and a bottom-dead-center position with respect to the cylinder.
    Type: Application
    Filed: December 22, 2011
    Publication date: October 23, 2014
    Inventor: Xiaofeng Lin
  • Publication number: 20140314600
    Abstract: The invention provides a liquid pump using an elastomeric piston. The liquid pump has a piston assembly (10), which comprises: a piston rod (11); a piston head (12); a piston engaging portion (15) which is between the piston rod and the piston head in a necking shape; and a piston (13) made of an elastomeric material and sleeved around the piston engaging portion between the piston rod and piston head. The piston rod and piston head are formed separately and then assembled together. The piston engaging portion (15) is composed of a piston-engaging-portion formation part of at least one of the piston rod and the piston head. The invention also provides a method of manufacturing the piston assembly (10). The invention further provides a piston assembly (10) for a liquid pump. The piston assembly has a piston (13) which is provided with an annular notch (133) formed on the periphery of an upper end of the piston (13) where an annular inner flange (131) is formed.
    Type: Application
    Filed: August 7, 2012
    Publication date: October 23, 2014
    Inventor: Yao Wu Ding
  • Publication number: 20140314601
    Abstract: High pressure fuel pump includes a cylinder which is fitted in a concave portion formed in a pump housing and which defines a compression chamber of the pump and a plunger which pressurizes, by sliding against the cylinder, the fluid in the compression chamber. It is structured such that the fluid sucked into the compression chamber by reciprocating motion of the plunger is pressurized and is then discharged from the compression chamber. The cylinder is formed of a cylindrical member which has a ceiling portion and in which the compression chamber is partitionedly formed. A fuel suction path formed in the pump housing reaches the compression chamber through the cylinder and a fuel discharge path formed in the pump housing is connected to the compression chamber through the cylinder. The cylinder is pressed against the pump body by a fuel pressurizing force applied to the cylinder.
    Type: Application
    Filed: November 30, 2011
    Publication date: October 23, 2014
    Inventors: Shingo Tamura, Atsuji Saito, Satoshi Usui, Masahiko Hayatani
  • Publication number: 20140301874
    Abstract: The present invention refers to a linear compressor based on resonant oscillating mechanism, which is comprised by at least one resonant spring (2) at least one linear motor (3) composed of at least one fixed portion (31 ) and at least one movable portion (32), at least one piston (4) operatively associated with at least one rod (5) and at least one cylinder (6), all these elements being disposed within a housing (7), and the movable portion (32) of the linear motor (3) is physically associated with one end of the resonance spring (2) through a first coupling assembly and the rod (5) is physically associated with the opposite end of the resonance spring (2) through a second coupling assembly. The linear motor (3), the cylinder (6) and the piston (4) are physically arranged within a same end of the housing (7). The rod (5) is disposed within the resonant spring (2). The piston-cylinder assembly (4, 6) is capable of acting at the distal end to the coupling end between the rod (5) to the resonant spring (2).
    Type: Application
    Filed: August 6, 2012
    Publication date: October 9, 2014
    Applicant: Whirlpool S.A.
    Inventors: Wilfred Roettger, Ingwald Vollrath, Paulo Rogério Carrara Couto, Celso Kenzo Takemori
  • Publication number: 20140301876
    Abstract: A piston pump, in particular for a hydraulic assembly of an electronically controllable vehicle brake system, includes a cylinder element that has a pressure chamber with an outlet formed on the inside. The piston pump further includes an outlet-restricting element held on the outside of the cylinder element on a component by a first holder.
    Type: Application
    Filed: October 25, 2011
    Publication date: October 9, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Oliver Gaertner, Heiko Jahn, Marc Zimmermann, Daniel Gosse
  • Publication number: 20140271240
    Abstract: A multipurpose gravity air compressor employs a piston (40) traveling down a cylinder (129) by the force of gravity compressing compressible fluid (140) in one or more compressible fluid chambers (137). Compressed fluid is emptied out of compressible fluid chambers (137) through compressible fluid exit (118) for use locally or downstream. A transporter such as transporter assembly 50 grabs piston (40) and recovers it back to opening (124) at predetermined intervals and deposits piston (40) into cylinder (129) to start another cycle. Multipurpose gravity air compressor through the generation of heat through compressing compressible fluid (140) also enjoys being a heat source. Air compressor 200 can provide a means for producing energy through compressing compressible fluid (140) and a source of heat for generating steam to produce electricity on-site or downstream. Water (condensation), possibly thousands of gallons a year, could be another rainfall-independent water source advantage enjoyed.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Inventor: Dennis Eugene Daily
  • Publication number: 20140271290
    Abstract: A pump has a packing nut extending into an open end of the plunger bore and a device coupled to the packing nut. The device includes first body coupled to a second body to form a body of the device. A first post connected to the body and a second post connected to the body. The first post extending into a first opening of the packing nut and the second post extends into a second opening of the packing nut to couple said device to said packing nut. A stop forms a portion of the device. When the body is in a locked orientation, the stop of the device abuts or will abut, when the nut is rotated in a loosening direction, a connecting assembly of the pump. When the body is in the unlocked orientation, the second post is moveable, relative to the first body and the first post, in a direction out of the second opening, and a first portion of said second body, exclusive of said second post, is moveable in a direction relative to said first body and first post.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: TCM INVESTMENTS, INC.
    Inventors: Nikolas Ryan DAVIS, Jacob Daniel RUPP
  • Publication number: 20140271250
    Abstract: A system, including a compressor including a cylinder with a chamber, a first axial end portion, and a second axial end portion, and a piston in the chamber of the cylinder, the piston is configured to reciprocate along a cylinder axis between the first and second axial end portions, and a co-axial flow device coupled to compressor, the co-axial flow device includes a first wall disposed about a first passage along an axis, a second passage disposed about the first wall along the axis, and a second wall disposed about the second passage along the axis, the first passage includes a first axial opening in fluid communication with the chamber while the piston moves in a first axial direction, and the second passage includes a second axial opening in fluid communication with the chamber while the piston moves in a second axial direction opposite from the first axial direction.
    Type: Application
    Filed: February 26, 2014
    Publication date: September 18, 2014
    Applicant: Cameron International Corporation
    Inventors: David W. Legg, Carl Noble