Motor Driven Patents (Class 417/271)
  • Patent number: 10946594
    Abstract: A method and associated system for repairing a reinforced polymer-infused fiber composite. The method includes providing a resin infusion device having resin components contained in a flexible, sealed container, positioning a dry fiber reinforcement onto a base layer repair location, providing at least one resin conduit connecting the resin container to a first end of the dry fiber reinforcement, providing at least one vacuum conduit connecting a vacuum source to a second end of the dry fiber reinforcement, covering and sealing the base layer repair location with a vacuum enclosure affixed to the base layer repair location, creating a vacuum environment at the base layer repair location via the vacuum conduit, infusing the dry fiber reinforcement with a reactive mixture of the resin components under vacuum conditions via the resin tubing to form a resin-infused fiber reinforcement, and curing the resin-infused fiber reinforcement inside the vacuum enclosure.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: March 16, 2021
    Assignee: Cornerstone Research Group, Inc.
    Inventors: Benjamin Dietsch, Patrick J. Hood
  • Patent number: 10548778
    Abstract: Devices and systems disclosed herein may include a negative pressure pump that includes a reservoir defining a lumen and a longitudinal axis, a piston, and a drive assembly comprising a spring. Motion of the spring may move the piston along the longitudinal axis of the reservoir to create a negative pressure within the reservoir. Methods of manufacturing a negative pressure pump and using a negative pressure pump to remove fluid from a target site are also described.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: February 4, 2020
    Assignee: IC Surgical, Inc.
    Inventors: Eric Hassenpflug, John Bartholomew, Steven Madland, David Holley, John P. Tallarico, Larry K. Hooks, Jr., Corrie Bennison, William G. Atterbury, Michael Scott Ulrich, Russell Kittel, Jeffrey L. Ellis, Thomas Haubert
  • Patent number: 10174755
    Abstract: An apparatus for a compressor head assembly with a discharge valve comprises a valve plate having a first face and a second face, wherein at least one cavity is located on the second face and a reed valve assembly sized to be contained in the at least one cavity. The reed valve assembly comprises a reed valve plate with at least one orifice, the reed valve plate selected according to a rated compressor displacement a retainer portion; and a reed retained by the retainer portion proximate to the reed valve plate and oriented to inhibit air flow through the at least one orifice in a closed state. The reed valve assembly is removably secured to the valve plate to facilitate changing the characteristics of the reed valve assembly without changing the valve plate.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: January 8, 2019
    Assignee: Bendix Commercial Vehicle Systems LLC
    Inventors: Jeffrey M Geither, Padraig B Yeats
  • Patent number: 9689529
    Abstract: An oil injection unit to provide motor oil to the motor of an electric submersible pump. The oil injection unit includes an injection module containing an amount of motor oil to be injected into the motor, a sensor to detect a predetermined condition that indicates the need to inject motor oil into the motor, and an injection valve that can be selectively opened to inject motor oil to the motor upon detection by the sensor of the predetermined condition.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: June 27, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Aron Meyer, David Tanner, Ryan Semple, Dario Fernando Lana
  • Patent number: 9664199
    Abstract: The present invention relates to a centrifugal pump, especially to a close coupled centrifugal pump. The centrifugal pump (10) comprises a shaft (18) coupled with the shaft (20) of the electric drive motor by means of a separate threaded coupling sleeve (24). The threaded coupling sleeve (24) is coupled with the shaft (20) of the drive motor by means of a key (34) and an adjusting nut (26).
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: May 30, 2017
    Assignee: Sulzer Management AG
    Inventor: Janne Ripattila
  • Patent number: 9506456
    Abstract: An axial piston machine has a cylinder connected to a shaft and a multiplicity of pistons guided by the cylinder and supported by sliding shoes on a swashplate. Each sliding shoe has a sliding shoe collar and a sliding shoe head, and is held in place in a direction of a contact position by an annular retraction plate. An end face segment of the retraction plate engages an annular surface between the sliding shoe collar and the sliding shoe head, and each sliding shoe collar passes through an associated aperture in the retraction plate and connects to a corresponding piston. A surround is formed in the retraction plates at the head of each sliding shoe, and is configured to fit around an axial segment of a circumference of the sliding shoe head in a direction toward the swashplate.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: November 29, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Philipp Sitzler, Stefan Hoppe
  • Patent number: 9458839
    Abstract: A hydrostatic machine includes a housing and a drive shaft. The housing has an inner housing part, configured to receive a force flow, an outer housing part, configured to seal and damp, and a housing floor. The drive shaft is configured, on an input side, to pass coaxially through the housing floor and is configured, on an output side, to pass coaxially through a swash plate. The drive shaft is connected to a cylinder drum in a rotationally fixed manner. The hydrostatic machine is configured in a weight-saving manner and is configured such that propagation of vibrations in the hydrostatic machine, and noise generation therefrom, are reduced. To this end, the drive shaft is further configured to pass only partially through the inner housing part and is rotatably mounted in the housing floor and the inner housing part.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: October 4, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Joachim Schmitt, Peter Krause, Ulrich Bittner, Josef Kopecki, David Breuer
  • Patent number: 9441469
    Abstract: In a rotary pump having a rotor and a stator in communication with hydrocarbon production tubing, a submersible pump driver assembly includes a drive motor having an output connected by a drive link to the rotor of the pump. A production housing of the drive assembly includes a production passage receiving the drive link in which the output axis of the drive motor is radially offset from the passage. A control line for providing a drive input to the motor is thus suited to extend alongside the production tubing. The driver assembly thus allows for flushing with only a coiled tubing unit as the coiled tubing can be readily inserted past the offset motor and the motor can be optionally run in reverse to improve flushing.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: September 13, 2016
    Assignee: CJS PRODUCTION TECHNOLOGIES INC.
    Inventors: Collin Rickey Morris, Joseph Henry Reck, Adam Budenski
  • Patent number: 9372135
    Abstract: Provided herein are fluidics platforms and related methods for performing integrated sample collection and solid-phase extraction of a target component of the sample all in one tube. The fluidics platform comprises a pump, particles for solid-phase extraction and a particle-holding means. The method comprises contacting the sample with one or more reagents in a pump, coupling a particle-holding means to the pump and expelling the waste out of the pump while the particle-holding means retains the particles inside the pump. The fluidics platform and methods herein described allow solid-phase extraction without pipetting and centrifugation.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: June 21, 2016
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: W. Henry Benner, John M. Dzenitis
  • Patent number: 9163612
    Abstract: A wind turbine nacelle (50) which comprises a frame (54) and a drive train which comprises a gearbox (55). The nacelle (50) has a rotor attached thereto and comprises a rotor hub (52), with one or more blades (53), which supported by a rotor bearing(s) (56) located on a tubular part (57) at an end of the frame (54) furthest from the tower (51). The gearbox (55) comprises a gearbox housing (58), not constituting part of the frame (54), which is rigidly and axially connected to the frame (54) by a gearbox flange (66) such that a side of the gearbox flange (66), furthest from the gearbox input side (I), is connected to an end of the frame flange (67) furthest away from the tower (51). An input shaft (76) of the gearbox (55) is connected to the rotor hub (52) via a separate connection part (77).
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: October 20, 2015
    Assignee: ZF Wind Power Antwerpen N.V.
    Inventor: Warren Smook
  • Publication number: 20150132152
    Abstract: A pump system for movement of fluids having a reciprocating piston power pump having at least three reciprocating pistons operable to displace fluid from a housing having a pumping chamber, an integrally forged crankshaft operably connected to the pistons, at least one sensor operable to sense ambient conditions on the pump, and a computer control for processing data from the sensor to regulate the operation of the pump in response to the data. The system also utilizes protective infused treatments for lubricity and enhanced lubrication sprayers and a reset relief valve and pressure sensors operably connected to the computer system for control and monitoring of the pump.
    Type: Application
    Filed: January 20, 2015
    Publication date: May 14, 2015
    Inventor: Gerard S. Lazzara
  • Publication number: 20150093265
    Abstract: An apparatus and method are disclosed for transmitting drive between a first and at least one further component. The apparatus includes an elongate shaft element extending along a respective longitudinal axis and comprising a first and further shaft region, each of which comprises a substantially cylindrical outer surface extending from a respective first and further side of a cam body region. The apparatus also includes a fluid communication pathway extending within the shaft element from a first end region of the shaft element to at least one outlet aperture in an outer surface of the first cylindrical region.
    Type: Application
    Filed: May 7, 2013
    Publication date: April 2, 2015
    Inventors: Borja Navas Sanchez, Mikko Jay, Benjamin P.G. West, Thomas J. Jury
  • Publication number: 20150075230
    Abstract: A washing machine and a detergent delivery pump assembly thereof are provided. The detergent delivery pump assembly includes a pump defining a plurality of fixed-volume chambers therein for containing detergents respectively, each fixed-volume chamber being provided with a liquid inlet valve and a liquid outlet valve; a plurality of pistons disposed in the plurality of fixed-volume chambers in one-to-one correspondence relationship and each including piston head, the piston head being controlled to reciprocate in the fixed-volume chamber to draw or push out a fixed volume of detergent; a motor assembly; and a transmission mechanism to associate the piston heads with the motor assembly, such that the piston heads are controlled to move in the fixed-volume chambers by the motor assembly.
    Type: Application
    Filed: March 22, 2013
    Publication date: March 19, 2015
    Inventors: Yong Ban, Lidong Wang
  • Patent number: 8944780
    Abstract: A system for delivery of medical fluid to a patient which includes a pump system and a drive system. The pump system has at least three chambers, where each chamber includes an inlet for fluid intake and an outlet for fluid expulsion, a common outlet channel in fluid communication with the outlet of each chamber, and at least three pistons, where each piston is slidably disposed within one of the chambers. The drive system includes a cam shaft having at least three cam lobes, each having a profile, and at least three cam lobe followers, each in operative connection with one of the cam lobes and adapted to be placed in operative connection with a respective piston. The profile of each of the cam lobes is adapted to provide a transient increase or spike in calculated theoretical output of the pump system to reduce periodic variation in measured output thereof.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: February 3, 2015
    Assignee: Bayer Medical Care Inc.
    Inventor: David M. Reilly
  • Patent number: 8882474
    Abstract: A variable displacement type compressor has a supply passage for supplying refrigerant gas to a pressure control chamber, a release passage for releasing the refrigerant gas from the pressure control chamber, a first control valve for controlling the amount of the refrigerant gas flowing through the supply passage, a check valve provided between the first control valve and the pressure control chamber and preventing the refrigerant gas from flowing from the pressure control chamber to the first control valve by closing the supply passage and a second control valve for adjusting a cross-sectional area of the release passage from minimum to maximum. The second control valve has a back pressure chamber communicating with the supply passage, a valve chamber forming a part of the release passage and communicating with a suction-pressure region, a valve hole forming a part of the release passage and communicating with the valve chamber and a spool having a valve portion located in the valve chamber.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: November 11, 2014
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Masaki Ota, Hiroshi Kubo, Ryo Matsubara, Yasuhiro Tabe, Hideharu Yamashita, Yuki Morikage
  • Patent number: 8834133
    Abstract: Device for pumping fluid located under conditions of high ambient temperature and pressure which must deliver at high pressure including a hydraulic delivery pump (11) linked to a hydraulic motor (40), characterized in that the hydraulic motor (40) is connected to the hydraulic delivery pump (10) by a shaft (41), the shaft (41) passing through a leaktight rotating seal (50) which separates the hydraulic fluid (42) returned from the hydraulic motor (40) from the lubricating fluid (5) for the hydraulic pump (10).
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: September 16, 2014
    Assignee: BP Corporation North America Inc.
    Inventor: Louis-Claude Porel
  • Publication number: 20140224829
    Abstract: A fluid pump device is operable by a drive and actuating system. The fluid pump device includes a pump manifold, a plurality of pump cylinders, a plunger reciprocally operable in each of the pump cylinders, and at least one inlet selector valve. The pump cylinders may extend proximally from the pump manifold and are in selective fluid communication with the pump manifold via, for example, respective inlet and outlet check valves. The plungers are reciprocally operable within the pump cylinders and are independently and reciprocally operable by respective piston linear actuators provided in the drive and actuating system. The inlet selector valve is used to establish selective fluid communication between one or more fluid source containers and the pump manifold to control fluid flow into the pump manifold. The inlet selector valve may be located laterally outboard of the pump cylinders and extend generally parallel to the pump cylinders.
    Type: Application
    Filed: September 20, 2012
    Publication date: August 14, 2014
    Applicant: Bayer Medical Care Inc.
    Inventors: Christopher D. Capone, Richard A. Seman, John A. Haury, Edward K. Prem, Joseph E. Bisegna, Ronald Heller, Glen P. Williams, Joseph C. Mator, Jason L. Bazala
  • Publication number: 20140216262
    Abstract: A reciprocating pump includes a motor having a motor shaft, four cylinders, four pistons disposed in the cylinders and reciprocated by the motor shaft, a casing accommodating the motor shaft, and eight ducts. The four cylinders are disposed at positions offset 90 degrees from each other about the motor shaft. Cylinder shaft directions are perpendicular to a motor shaft direction. The eight ducts include four intake ducts and four exhaust ducts. Gas is introduced into the cylinders through the intake ducts and discharged from the cylinders through the exhaust ducts. The eight ducts are disposed in a region surrounded by the cylinders when viewed along the motor shaft direction. The eight ducts are arranged in four pairs with each pair disposed between adjacent cylinders about the motor shaft. The four pairs of ducts disposed between the adjacent cylinders extend along the motor shaft direction.
    Type: Application
    Filed: September 7, 2012
    Publication date: August 7, 2014
    Inventors: Keita Kondou, Tetsuya Ukon, Munehiro Okamura
  • Patent number: 8777588
    Abstract: The invention relates to a cylinder drum (1?) for a hydrostatic piston engine, having at least one kidney-shaped control port/cylinder bore transition (5?, 5?, 5??) which leads into a cylinder bore (2, 2?a) for receiving a piston that can be axially displaced therein, wherein the kidney-shaped control port/cylinder bore transition (5?, 5?, 5??) is configured perpendicular to the flow direction in a stepless and edge-free manner.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: July 15, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Joachim Rentschler, Peter Schlotter
  • Patent number: 8727743
    Abstract: A first swash plate (30) and a second swash plate (40) are disposed on either side of a cylinder block (4), and a plurality of cylinders (6) are disposed in the cylinder block (4). A first piston (8) and a second piston (9) are inserted opposite to each other in each cylinder (6) such that the first piston (8) slides on the first swash plate (30) and the second piston (9) slides on the second swash plate (40). By providing a servo mechanism (33) that tilts the first swash plate (30) and a tilt linking mechanism (40, 70) that tilts the second swash plate (40) in conjunction with the tilting of the first swash plate (30), tilt angles of the two swash plates (30, 40) can be controlled by the single servo mechanism (33).
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: May 20, 2014
    Assignee: Kayaba Industry Co., Ltd.
    Inventor: Takeo Shimizu
  • Patent number: 8727742
    Abstract: A compressor is provided. The compressor includes a housing, a valve plate, a cylinder block, piston units, a cam element, a driving shaft and a motor. The valve plate is fixed to one end of the housing. The cylinder block is rotatable relative to the valve plate and has cylinder bores disposed in a circumferential direction. A portion of the cylinder block is received in the valve plate. The piston units are disposed the cylinder bores. The cam element is fixed to the housing and is in contact with one end of the piston unit. The cam element has an inclined cam surface. One end of the driving shaft is coupled to the cylinder block. The motor is fixed to an opposite end of the housing, while a rotating shaft is coupled to an opposite end of the driving shaft.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: May 20, 2014
    Assignee: Korea Institute of Science and Technology
    Inventors: Yong Kwun Lee, Soo Jun Lee, Hyeon Min Lee
  • Patent number: 8725364
    Abstract: A control device controls a hydrostatic transmission vehicle having a hydrostatic transmission including a variable displacement pump and a variable displacement hydraulic motor. The control device is configured to set a set vehicle speed based on a forward/rearward travel command and a gear stage command instructed by an operator, to set a torque limit usable for the hydrostatic transmission based on an engine speed, to set a vehicle speed limit based on a pressure in the hydraulic circuit and the torque limit, to select a lower one of the set vehicle speed and the vehicle speed limit, and to control respective displacements of the variable displacement pump and the variable displacement hydraulic motor based on the selected vehicle speed.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: May 13, 2014
    Assignee: Komatsu Ltd.
    Inventors: Eiji Ishibashi, Masayuki Mukaino, Shigeru Yamamoto, Yoshitaka Onodera, Takao Ishihara
  • Patent number: 8708667
    Abstract: A fuel pump assembly for a fuel injection system comprises a drive shaft, at least two pump heads each of which is axially displaced along the drive shaft, each pump head having a respective plunger for pressurising fuel within a respective pump chamber, and at least two cams provided on the drive shaft, each of which is associated with a respective one of the pump heads. Adjacent pump heads are offset angularly from one another by an amount sufficient to allow a region of overlap, in an axial direction along the drive shaft, between the adjacent pump heads.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: April 29, 2014
    Assignee: Delphi International Operations Luxemboug S.A.R.L.
    Inventor: Peter Alban George Collingborn
  • Patent number: 8696324
    Abstract: A quintuplex mud pump includes a pair of motors (18), a crankshaft (40) supporting five eccentric lobes (44), and first and second bull gears (30). Each of two pinion shafts (20) are rotationally independent, and has a pinion gear interfacing with a respective bull gear on the crankshaft (40). Five connecting rods (46) interconnect a respective eccentric lobe and a respective piston.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: April 15, 2014
    Inventor: Jason C. Williams
  • Patent number: 8608454
    Abstract: In a swash-plate type hydrostatic piston engine, a drive unit (10) and a swash plate (17) are received by a pot-shaped housing (1b). According to the invention, the pot-shaped housing (1b) is configured such that it is able to receive drive units (10a, 10b) of at least two rated quantities of a specific product series of the hydrostatic piston engine.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: December 17, 2013
    Assignee: Brueninghaus Hydromatik GmbH
    Inventors: Guenter Wanschura, Juergen Gintner
  • Patent number: 8523536
    Abstract: An axial piston pump has: a cylinder body that forms therein a cylinder chamber extending in an axial direction of a drive shaft and rotates integrally with a driven shaft; a piston that reciprocates in the axial direction of the drive shaft; and a cam device that rotates integrally with the drive shaft and has: a fixed cam member that has a cam surface capable of coming into contact with a cam follower coupled to the piston and is capable of rotating integrally with the drive shaft, with movement of the fixed cam member in the axial direction being restricted; and a movable cam member that has a cam surface capable of coming into contact with the cam follower and is capable of rotating integrally with the drive shaft, with movement of the movable cam member in the axial direction being allowed, irregularity differences in the axial direction of the cam surface of the fixed cam member and the movable cam member being different from each other.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: September 3, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shinya Kuwabara, Tadashi Fujiyoshi, Hiroyuki Shiori
  • Patent number: 8517695
    Abstract: Provides is a variable displacement swash plate type compressor comprising a drive shaft, a lug plate fixedly installed at one side of the drive shaft, a swash plate dispose at another side of the drive shaft and rotated by the lug plate to vary a tilt angle thereof, a sleeve reciprocally moving along the drive shaft to let the swash plate rotate, and a spring supported between the sleeve and the lug plate, characterized in that the variable displacement swash plate type compressor comprises a restriction ring installed around the drive shaft between the lug plate and the sleeve to contact with the swash plate at a maximum tilt angle of the swash plate, wherein an end of the restriction ring is contacted with the lug plate and another end of the restriction ring is supported by the spring. Thus, since the direct contact between the swash plate and the lug plate is prevented, when the swash plate reaches at the maximum tilt angle, it is possible to reduce the noise and the wear remarkably.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: August 27, 2013
    Assignees: Doowon Technical College, Doowon Electronic Co., Ltd.
    Inventors: Geon-ho Lee, Tae-jin Lee, Ki-beom Kim
  • Publication number: 20130177454
    Abstract: A reciprocating compressor or pump features a manifold arranged not only to define a hollow interior for receiving fluid discharged from a plurality of cylinders but also to define a base or frame on which the cylinders are carried. Unique valves formed in part by flexible material reduces the likelihood of fatigue and increases efficiency by retaining less heat relative to conventional reed valves. A compressor or pump mounted at an end of a handle extending parallel to a motor housing likewise extending from the compressor or pump provides an easy to carry portable assembly. A fan mounted between a motor and a compressor pulls air through the compressor inlet to both cool the motor and feed the compressor. A portable tool system powers both pneumatic and electric tools. Connecting rod structures for radial compressors or pumps provide improved strength and easier assembly.
    Type: Application
    Filed: July 9, 2012
    Publication date: July 11, 2013
    Inventors: Larry Alvin Schuetzle, Lloyd Dean Penner
  • Patent number: 8475141
    Abstract: A pump assembly 10 for high pressure cleaners having a pump body 12 encasing the free end 14 of a motor shaft provided with a keyed-on wobble plate 16 which moves one or more than one axial pistons 18 that are elastically tensioned by helical springs 20. The pump assembly also includes a pump head 32 fixed to the pump body 12 provided with fluid inlet and outlet conduits and relative valves, and an intermediate housing 34 for receiving and guiding the piston 18. The intermediate housing 34 has a frustoconical-shaped body with its larger diametered bottom section facing the same-diametered pump body 12 and being secured thereto by screws 36.
    Type: Grant
    Filed: April 9, 2010
    Date of Patent: July 2, 2013
    Assignee: IP Cleaning S.p.A.
    Inventor: Italo DaRif
  • Patent number: 8459962
    Abstract: Provided is a variable displacement swash plate type compressor including a cylinder block having a plurality of cylinder bores, a drive shaft rotatably supported by the cylinder block, a lug plate fixedly installed at the drive shaft, a swash plate rotated by the lug plate to vary its inclination angle, and pistons reciprocally accommodated in the cylinder bores depending on rotation of the swash plate, the compressor including a projection projecting from the lug plate toward the swash plate and disposed only behind the rotational direction of the drive shaft, a slope formed on the rear part of the lug plate at one side of the projection, an arm projecting from the swash plate toward the lug plate, a first guide coupled to the arm in front of the rotational direction of the drive shaft to move along the slope in a contact manner, and a second guide coupled to the arm adjacent to the projection to move along the slope in a contact manner.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: June 11, 2013
    Inventors: Geon-ho Lee, Dong-hui Lee, Tae-jin Lee, Ki-beom Kim
  • Publication number: 20130142675
    Abstract: In a fluid control device, a valve body is prevented from being pressed forcefully against a valve seat or the like, and an excessive load is prevented from acting on a motor. A flow rate adjustment device includes a first engagement portion, and a second engagement portion that is capable of moving relative to the first engagement portion and transmitting and receiving rotary force. The flow rate adjustment device includes a valve body that adjusts an opening of a flow passage, and a rod that is coupled to the valve body. The flow rate adjustment device further includes a male screw portion and a female screw portion that are intermeshed so as to be fed relative to each other in the axial direction, a projecting portion that restricts movement of the second engagement portion, and a first cylinder that restricts movement of the rod.
    Type: Application
    Filed: January 31, 2013
    Publication date: June 6, 2013
    Applicant: CKD CORPORATION
    Inventor: CKD CORPORATION
  • Patent number: 8435013
    Abstract: A reciprocating compressor includes a motor having a motor shaft, four cylinders provided in perpendicular directions relative to an axial direction of the motor shaft, and four pistons Each piston has a piston head part and a rod part formed integrally with the piston head part. Each piston head part is fitted into one of the four cylinders in a reciprocable fashion. Each rod part is rotatably mounted to an eccentric shaft that is fixed to the motor shaft.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: May 7, 2013
    Assignee: Daikin Industries, Ltd.
    Inventors: Keita Kondou, Satoshi Ueda, Yuki Kuwamura
  • Patent number: 8342816
    Abstract: Engine-driven hydraulic pump for an aircraft, having a first and a second pump unit which each comprise an adjustable swash plate and a piston assembly coupled with said swash plate and driven by a pump shaft, a control device for adjusting the inclination of the swash plate and a drive shaft via which the hydraulic pump can be driven by an engine of the aircraft while generating hydraulic pressure at an outlet line, characterized in that the pump units are arranged in parallel and have a respective pump shaft, which pump shafts are coupled with the drive shaft by a gear unit.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: January 1, 2013
    Assignee: Airbus Operations GmbH
    Inventors: Axel Voetter, Ulrich Mueller
  • Patent number: 8333572
    Abstract: A pump includes a cylindrical main body comprising a central channel, four valve assemblies each threadedly fastened in a radial hole, first and second cavities disposed to each hole and communicating therewith, a spring activated first check valve in each first cavity, a spring activated second check valve in each second cavity, an outlet, a threaded outlet orifice communicating with the outlet, an inlet, a threaded inlet orifice communicating with the inlet, four plungers each in a plunger chamber communicating between the hole and the channel, opposite outlet and inlet tunnels, two snapping members each having a central hole and a snapping bifurcation at either bent end, the snapping bifurcation slidably put on an end of the plunger; a top cover; a bottom cover; and an eccentric shaft having one end secured to motor shaft and other portions in the main body to operatively secure to the snapping members.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: December 18, 2012
    Assignee: Jongherya Co., Ltd.
    Inventor: Huang Chin Hsieh
  • Patent number: 8322999
    Abstract: A hydrostatic axial piston machine, in particular a swashplate machine, has a cylinder drum (3) mounted so that it can rotate around an axis of rotation (2). The cylinder drum (3) is provided with cylinder bores (4), in each of which a piston (5) is mounted so that it can be displaced longitudinally. The cylinder drum (3) is axially supported on a control surface (8) affixed to the casing and on which an inlet connection (10) and an outlet connection (11) are realized. The cylinder bores (4) can each be placed in communication by a connecting channel (12) with the control surface (8). The connecting channel (12) is provided with a cross-section that increases from the cylinder bore (4) toward the control surface (8).
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: December 4, 2012
    Assignee: Linde Material Handling GmbH
    Inventor: Martin Bergmann
  • Patent number: 8267672
    Abstract: An ultrahigh pressure pump includes a frame; a crankshaft having a journal; and at least one telescoping pump subassembly having inner and outer ends. The outer end is carried by the frame pivot so as to allow pivotal swinging movement of the pump subassembly, and the inner end is attached to the journal. The piston rod can reciprocate relative to the inner bore substantially free from side loads. The pump subassembly includes: an outer member including a cylinder defining an inner bore; and a inner member having a piston rod and a outer sleeve. The piston rod is received in the inner bore and the cylinder is received in the outer sleeve. First and second restraining elements are disposed at spaced-apart positions along the axis of the pump subassembly and are configured to oppose misalignment forces between the piston rod and the cylinder.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: September 18, 2012
    Inventors: Franz W. Kellar, Harold Lloyd Crowder, Jr.
  • Patent number: 8262368
    Abstract: A hydraulic piston machine includes a plurality of pistons (12, 14) which are driven by a drive/output shaft (40), guided in an axially displaceable manner in a piston barrel (4) of a housing (2), and, in each case, bound one working chamber (44) into which the pressure medium may be fed via a suction valve (46), and from which the pressure medium may be discharged via a pressure valve (48). The housing (2) includes at least one further housing part (6) which is connected to the piston barrel (4) on the front side. The suction valves (46) and pressure valves (48) are situated in the region of a parting plane (50) between the housing parts (4, 6), in housing receptacles (52, 54), approximately axially parallel to the longitudinal axis of the piston machine.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: September 11, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Brian Kane, Thomas Seufert
  • Patent number: 8235681
    Abstract: A first swash plate (30) and a second swash plate (40) are disposed on either side of a cylinder block (4), and a plurality of cylinders (6) are disposed in the cylinder block (4). A first piston (8) and a second piston (9) are inserted opposite to each other in each cylinder (6) such that the first piston (8) slides on the first swash plate (30) and the second piston (9) slides on the second swash plate (40). By providing a servo mechanism (33) that tilts the first swash plate (30) and a tilt linking mechanism (40, 70) that tilts the second swash plate (40) in conjunction with the tilting of the first swash plate (30), tilt angles of the two swash plates (30, 40) can be controlled by the single servo mechanism (33).
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: August 7, 2012
    Assignee: Kayaba Industry Co., Ltd.
    Inventor: Takeo Shimizu
  • Patent number: 8215924
    Abstract: Provided is an oil separating structure of a variable displacement compressor including: a cylinder block having a plurality of cylinder bores; a front housing disposed in the front of the cylinder block to form a swash plate chamber; a drive shaft rotatably supported at the cylinder block; a lug plate disposed in the swash plate chamber of the front housing and fixedly installed at the drive shaft; a rear housing disposed in the rear of the cylinder block and having a discharge chamber and a suction chamber communicating with the cylinder bores; a swash plate installed to be rotated by the lug plate to vary its inclination angle; pistons connected to the swash plate and reciprocating in the cylinder bores; a suction path for communicating the swash plate chamber and the discharge chamber; an additional exhaust path for communicating the swash plate chamber and the suction chamber; and a control valve installed in the middle of the suction path, characterized in that the drive shaft has a communication apertu
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: July 10, 2012
    Assignees: Doowon Technical College, Doowon Electric Co., Ltd.
    Inventors: Geon-Ho Lee, Tae-jin Lee, Young-Chang Han, Min-jun Kim
  • Patent number: 8206130
    Abstract: A radial cylinder hydraulic motor comprises: oscillating hydraulic cylinders (1) driven to oscillate by means of an eccentric crankpin (2) formed on the motor shaft (3), the oscillating cylinder liners (4) being provided with trunnions (5) for oscillation about a parallel axis (C) to the axis (A) of rotation of the motor shaft which are coupled oscillably to the motor crankcase (6); reciprocating pistons (7) within said liners which are provided with a runner (8) for sliding over the outer surface (9) of said eccentric crankpin; and a rotary disk distributor (10, 23) coupled to the motor shaft for synchronized rotation therewith, adapted to place the conduits (12, 13) of the hydraulic circuit in fluid communication with the conduits (14) of the respective cylinders during the delivery and discharge strokes via ports of slanted or through-going configuration; and advantageously includes the rotating disk of the distributor formed with a connection/supply means (38, 40) to the passageway between one face (27) a
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: June 26, 2012
    Assignee: S.A.I. Societa' Apparecchiature Idrauliche S.p.A.
    Inventors: Vittorio Pecorari, Davide Pecorari
  • Publication number: 20120134855
    Abstract: A hydraulic power module is provided with a plurality of hydraulic actuators. A piston of each of the hydraulic actuators is coupled with a drive plate and a screw is rotatably coupled with the drive plate. Rotation of the screw longitudinally displaces the drive plate to simultaneously actuate each of the hydraulic actuators. A second hydraulic power module may be coupled with the hydraulic power module, such that rotation of the screw also drives the screw of the second hydraulic power module.
    Type: Application
    Filed: May 26, 2011
    Publication date: May 31, 2012
    Applicant: HYDROMECH INDUSTRIES, LLC.
    Inventor: David W. Brown
  • Patent number: 8118566
    Abstract: In a piston-type compressor in which a working fluid is taken in through an intake port is first compressed with pistons and is then let out through an outlet port, an axial hole ranging along the axial direction and a radial hole communicating with the axial hole and opening into a crankcase are formed within the shaft. Additionally, a first intake passage through which the working fluid having flowed in through the intake port is guided via the crankcase to the radial hole and the axial hole and a second intake passage through which the working fluid having flowed in through the intake port is guided to join the working fluid having been drawn into the first intake passage by bypassing the crankcase are formed in the compressor. The working fluid is taken into cylinders from the area where the first working fluid and the second working fluid join each other.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: February 21, 2012
    Assignee: Valeo Thermal Systems Japan Corporation
    Inventors: Tomoyasu Takahashi, Yoshihiro Adachi
  • Publication number: 20120020813
    Abstract: A compressor is provided. The compressor includes a housing, a valve plate, a cylinder block, piston units, a cam element, a driving shaft and a motor. The valve plate is fixed to one end of the housing. The cylinder block is rotatable relative to the valve plate and has cylinder bores disposed in a circumferential direction. A portion of the cylinder block is received in the valve plate. The piston units are disposed the cylinder bores. The cam element is fixed to the housing and is in contact with one end of the piston unit. The cam element has an inclined cam surface. One end of the driving shaft is coupled to the cylinder block. The motor is fixed to an opposite end of the housing, while a rotating shaft is coupled to an opposite end of the driving shaft.
    Type: Application
    Filed: June 15, 2011
    Publication date: January 26, 2012
    Inventors: Yong Kwun LEE, Soo Jun LEE, Hyeon Min LEE
  • Patent number: 8087904
    Abstract: A hybrid hydraulic-electric pumping unit (12) with downstroke energy recovery is disclosed which is operated in a conventional flow mode to supply hydraulic fluid to a hydraulic ram (26), and then is operated in a reverse flow mode to receive the hydraulic fluid from the hydraulic ram (26) and turn an electric motor (16) to generate electric power. A single hydraulic hose (48) connects the pump (18) to the hydraulic ram (26), and is used for both passing the hydraulic fluid from the pump (18) to the hydraulic ram (26) and from the ram (26) to the pump (18). The potential energy of the weight of sucker rods (10) lifted in operating the pumping unit (12) is recovered by operating the pump (18) and motor (16) with return of the hydraulic fluid from the hydraulic ram (26) through the pump (18), which turns the motor (16) to generate electric power.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: January 3, 2012
    Assignee: Global Oilfield Services LLC
    Inventor: Larry D. Best
  • Patent number: 8011897
    Abstract: A cam driven piston compressor includes one or more cams powered by a motor, the cams being adapted to rotate through 360 degrees, and one or more cam followers, each of which is in contact with one of the cams. The compressor also includes one or more pistons wherein each of the pistons is attached to one of the cam followers, one or more cylinders wherein each of the cylinders encloses one of the pistons, and a compressor head in contact with the cylinders.
    Type: Grant
    Filed: August 4, 2006
    Date of Patent: September 6, 2011
    Assignee: Carleton Life Support Systems Inc.
    Inventors: Timothy T. Raleigh, Sammy K Mickelson
  • Publication number: 20110206541
    Abstract: A metering pump device capable of performing a fixed amount of discharge with a high accuracy even if a pressure difference occurs between outflow side valves. In the metering pump device, two reciprocating pump devices are used. The end and start of the discharge period of one reciprocating pump device are overlapped with the start and end of the discharge period of the other reciprocating pump device. After the inhalation operation and before the discharge period, both the inflow side valves and the outflow side valves are closed to perform a correction operation for eliminating the pressure difference by increasing or decreasing the internal volumes of the pump chambers.
    Type: Application
    Filed: April 4, 2007
    Publication date: August 25, 2011
    Applicant: NIDEC SANKYO CORPORATION
    Inventors: Mitsuo Yokozawa, Kenji Muramatsu
  • Patent number: 7997879
    Abstract: An axial piston machine of swash-plate construction includes a cylinder block (2) rotatable in a housing (1) and supported in the axial direction against a valve plate (6a) arranged on a housing component (7), a driving shaft (8) coupled in a rotationally synchronous manner to the cylinder block (2), and a cylinder block bearing (10) absorbing transverse forces. In order to achieve a simple construction which is axially and radially compact, the cylinder block bearing (10) is arranged between a central recess (9) of the cylinder block (2) and a supporting journal (7a) fastened to the housing component (7) and extending into the recess (9).
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: August 16, 2011
    Assignee: Linde Material Handling GmbH
    Inventor: Martin Bergmann
  • Patent number: 7988428
    Abstract: A pressure pump in a primary liquid flow is combined with a pressure exchanger for energy recovery from a secondary liquid flow. A motor-driven rotor portion, including two (primary and secondary) rotatable drum-type cylinder assemblies, is disposed between end blocks configured with input/output ports and cavities forming sliding synchronous reversing valves. Interconnected piston assemblies, including at least one primary piston and one secondary piston, are reciprocated axially by a central angled swash-plate in a progressive sequential manner by rotation of the rotor portion. The combination machine can be optimized for beneficial deployment in a reverse osmosis seawater desalination system to provide unusual simplicity, high efficiency energy recovery from the brine discharge flow and low overall operating cost.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: August 2, 2011
    Inventor: John P. MacHarg
  • Patent number: 7967574
    Abstract: The invention concerns a variable pump or hydraulic motor with a drive shaft with a first axis of rotation and first plungers connected to the drive shaft and rotatable around the first axis of rotation. A port plate mounted in the housing can rotate around an axis intersecting the first axis, for adjusting the stroke volume. The port plate positioning drive comprises two counter-acting hydraulic actuators acting on the port plate in the direction of the first plungers.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: June 28, 2011
    Assignee: Innas B.V.
    Inventor: Peter A. J. Achten
  • Patent number: 7950904
    Abstract: The present invention relates to a compressor which secures a sufficient refrigerant inhaling passage so as to minimize a refrigerant inhaling resistance and also to increase lubricating action with respect to a thrust bearing supporting a swash plate, in a structure that refrigerant is inhaled to a cylinder bore through a hollow drive shaft, thereby improving the performance of the compressor.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: May 31, 2011
    Assignee: Halla Climate Control Corp.
    Inventor: Tae-Young Park