Having A Mechanical Clutch Or Brake Device In The Power Train Patents (Class 60/435)
  • Patent number: 10364792
    Abstract: A hydraulic machine (1) comprising first and second brake elements (92, 93), a spring washer (65) tending to urge the first and second brake elements (92, 93) in a braking direction, and a brake release piston (61) configured to act on the spring washer (65) in a direction opposing the braking direction, the hydraulic machine being characterized in that the brake release piston (61) comprises a primary brake release piston (61a) associated with a primary brake release chamber (62a), and a secondary brake release piston (61b) associated with a secondary brake release chamber (62b), said primary and secondary chambers (62a, 62b) extending radially around the shaft (2) in such a manner that projections of the primary brake release chamber (62a) and of the secondary brake release chamber (62b) onto a plane perpendicular to a longitudinal axis (X-X) defined by the axis of rotation of the hydraulic machine (1) are superposed, at least in part.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: July 30, 2019
    Assignee: POCLAIN HYDRAULICS INDUSTRIE
    Inventors: Julien Engrand, Stéphane Vidal, Gilles Grillon, Bertrand Bonnomet
  • Patent number: 10336179
    Abstract: A hydraulic motor for vehicle wheel includes a hydrodynamic element, a reaction element, an oil distributor rotating as one with the reaction element, and a brake mounted between the two elements to oppose the rotational movement. The hydrodynamic element has a flange that surrounds the oil distributor. On its radially exterior face, it has means for rotationally coupling with the rotary discs of the brake. The brake is thus positioned around the distributor.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: July 2, 2019
    Inventor: Laurent Eugéne Albert
  • Patent number: 10145457
    Abstract: A pendulum damper device includes a rotary member rotatable about a rotational axis. The rotary member includes a plurality of guide groove parts circumferentially aligned. The pendulum damper device also includes a plurality of pendulum units supported by the guide groove parts. The pendulum units swing along the guide groove parts so as to attenuate vibration when the rotary member is rotated. In addition, the pendulum damper device includes a plurality of stoppers mounted to the rotary member. Each of the stoppers is contacted to a part of each of the pendulum units so as to restrict a swing range of the each of the pendulum units.
    Type: Grant
    Filed: September 1, 2014
    Date of Patent: December 4, 2018
    Assignee: EXEDY CORPORATION
    Inventor: Yoshiyuki Hagihara
  • Patent number: 10059313
    Abstract: A hydraulic drive unit for use in a vehicle or other application incorporates a motor disposed in a housing and connected to a pump through a porting system, and an output shaft driven by the motor. A mechanical brake is used to brake the motor, while a valve provides a hydraulic brake for preventing flow between the hydraulic motor and the hydraulic pump. A brake actuator is connected to both the mechanical brake and the hydraulic brake, whereby actuation of the brake actuator causes both the mechanical brake and the hydraulic brake to be actuated.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: August 28, 2018
    Assignee: Hydro-Gear Limited Partnership
    Inventor: Thomas J. Langenfeld
  • Patent number: 9605694
    Abstract: In a method of driving a hydraulic system, a contracting force is applied to a hydraulic actuator, thereby causing hydraulic fluid from the hydraulic actuator to flow through a first hydraulic pump motor into a first accumulator, thereby causing the first hydraulic pump motor to apply rotational energy to a shaft. The rotational energy from the shaft is applied to a second hydraulic pump motor, thereby causing hydraulic fluid to be pumped from a second accumulator to a third accumulator so as to store energy in the third accumulator. Once energy is stored in the third accumulator, the second hydraulic pump motor is driven with hydraulic fluid stored in the third accumulator so as to apply rotational energy to the shaft, thereby driving the first hydraulic pump motor to pump hydraulic fluid from the first accumulator to the hydraulic actuator, thereby applying an expanding force to the hydraulic actuator.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: March 28, 2017
    Assignee: Georgia Tech Research Corporation
    Inventors: Michael J. Leamy, Oscar Rafael Pena
  • Patent number: 9453565
    Abstract: Disclosed is a torque converter in a vehicle, which permits putting a lock-up clutch into operation while sufficiently attenuating vibration at all rotation speed ranges of a low rotation speed range to a high rotation speed range of an engine. The torque converter in a vehicle includes a lock-up clutch and a torsional damper, wherein the torsional damper has one side with a first centrifugal absorbing unit provided thereto for absorbing vibration and impact by centrifugal force, and a spline hub has one side with a second centrifugal absorbing unit for absorbing vibration and impact by centrifugal force.
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: September 27, 2016
    Assignee: Korea Powertrain Co., Ltd.
    Inventors: Jin-Soo Lee, Jin-Moon Kim
  • Patent number: 9156199
    Abstract: A hybrid drive includes an electric motor coupled to a hydraulic drive having a double-acting hydraulic piston and a piston rod, and a substantially throttle-less valve for actuating the hydraulic drive, and a control unit for actuating the electric machine. To avoid unnecessary energy consumption, an actuating direction requested by the hybrid drive and a desired actuating force are determined, the valve is switched to a position such that the hydraulic drive is effective in the actuating direction, at least when the actuating force cannot be generated by the electric motor alone, the difference between the force generated by the hydraulic drive and the actuating force is determined, and the electric motor is operated such that the desired actuating force is achieved by adding the force generated by the motor to the force generated by the hydraulic drive, or subtracting the first from the latter.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: October 13, 2015
    Assignee: NETSTAL-MASCHINEN AG
    Inventors: Markus Notz, Markus Lanker
  • Patent number: 9074345
    Abstract: A reduction gear is mounted on a revolving frame, and an electric motor having an electric motor shaft is disposed on the reduction gear. A hydraulic motor having a shaft is disposed on an upper side of the electric motor. A shaft insertion hole through which an upper end side of the electric motor shaft is inserted is provided in a lid portion of an electric motor casing. A male spline portion provided on the hydraulic motor shaft is spline-coupled to a female spline portion provided on the electric motor shaft. A bearing is provided between the shaft insertion hole and the electric motor shaft, and a pressure tight seal is provided by being located upwardly of the bearing. Hence, spline coupling portions of the female spline portion and the male spline portion are constantly lubricated by making use of drain oil which has leaked from the hydraulic motor.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: July 7, 2015
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Nobuo Uzawa, Mitsugu Ojima, Kouji Ishikawa, Hidetoshi Satake
  • Publication number: 20150135694
    Abstract: A gearbox hydraulic circuit includes a hydraulic pump connected to a fluid reservoir to generate a flow of pressurised fluid. A pressure circuit connected to the hydraulic pump conveys the flow of pressurised fluid. A pressure control valve disposed in the pressure circuit between the first line and the second line of the pressure circuit maintains the pressure of the pressurised fluid in the first line. A shunt connected to the pressure circuit is operable to route the flow of pressurised fluid from the first line to the second line to reduce the pressure in the first line.
    Type: Application
    Filed: June 17, 2013
    Publication date: May 21, 2015
    Applicant: Turner Powertrain Systems Limited
    Inventor: John Wootton
  • Publication number: 20150082791
    Abstract: A steam turbine system and method of operating a steam turbine system including a steam generator coupled to a high pressure section and a low pressure section. The steam turbine system may further include to a first portion of a drive shaft coupled to the high pressure section and a clutching device for releasably coupling to a power generator coupled to the first portion of the drive shaft. The steam turbine system may also include a second portion of the drive shaft for coupling to the power generator coupled to the low pressure section. The method may be implemented using a controller of the steam turbine system.
    Type: Application
    Filed: September 26, 2013
    Publication date: March 26, 2015
    Applicant: General Electric Company
    Inventors: Colin Scott Riley, Tad Russel Ripley
  • Patent number: 8919116
    Abstract: A cylinder block brake for a hydrostatic transmission or transaxle is provided. A braking member is located in a housing adjacent to a motor cylinder block and has a first position where it is not engaged to the motor cylinder block and a second, braking position where it is engaged to the motor cylinder block. A brake actuation shaft is located in the housing and has a cam portion located along its longitudinal axis. The cam portion is positioned to engage the braking member so that rotation of the brake actuation shaft moves the braking member between the engaged and disengaged positions.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: December 30, 2014
    Assignee: Hydro-Gear Limited Partnership
    Inventors: Thomas J. Langenfeld, Shane A. Deters
  • Publication number: 20140331663
    Abstract: A hydraulic system for an implement coupler assembly of a machine includes a coupler cylinder, a control valve connecting the coupler cylinder to a pressurized fluid source and a low pressure reservoir, and a sequence valve and a check valve connected in parallel between the coupler cylinder and the control valve. An implement cylinder provides a pilot pressure for the sequence valve. The coupler cylinder extends to a locked position when the control valve provides pressurized fluid through the check valve to a head end of the coupler cylinder. The coupler cylinder retracts to an unlocked position when the control valve provides pressurized fluid to a rod end of the coupler cylinder if the implement cylinder provides pilot pressure sufficient to open the sequence valve and connect the head end of the coupler cylinder to the low pressure reservoir.
    Type: Application
    Filed: May 8, 2013
    Publication date: November 13, 2014
    Applicant: Caterpillar Inc.
    Inventors: Troy Robl, Trent Randall Stefek, Rudy Van Mills
  • Patent number: 8881515
    Abstract: A damper assembly for a torque converter includes a drive side elastic element arranged for transmitting torque to a turbine for the torque converter in a first direction and a coast side elastic element, separate from the drive side elastic element, arranged for transmitting torque to the turbine in a second direction opposite the first direction. In an example embodiment, a slope of a torque curve for the damper remains constant in a transition region between transmitting torque to the turbine in the first direction and transmitting torque to the turbine in the second direction. In an example embodiment, the damper assembly includes an input damper and an output damper. The elastic elements are disposed in a torque path between the input damper and the output damper. In an example embodiment, the input damper is selectively engaged with a cover for the torque converter and the output damper is drivingly engaged with an output hub for the torque converter.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: November 11, 2014
    Assignee: Schaeffler Technologies GmbH & Co. KG
    Inventors: Patrick Lindemann, Brian Zaugg, Chad Mieczkowski
  • Publication number: 20140223897
    Abstract: In a seal device for a hydraulic circuit, in which an oil passage that supplies hydraulic oil to or discharges the hydraulic oil from a hydraulic actuator operated by hydraulic pressure is formed over at least two members that relatively move, and a seal member that seals a gap between the two members in a liquid-tight manner is disposed in an interior of a groove section that is formed in at least either one of the two members, a communication section that allows the groove section to communicate with any portion of the oil passage such that the hydraulic oil in the interior of the groove section moves along with supply of the hydraulic oil to or discharge of the hydraulic oil from the hydraulic actuator is formed.
    Type: Application
    Filed: August 30, 2011
    Publication date: August 14, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenta Kimura, Yuji Hattori, Tomokazu Inagawa, Takafumi Inagaki, Yu Nagasato
  • Publication number: 20140157766
    Abstract: A hydraulic controller for an automatic transmission of a motor vehicle includes at least one gear shift piston-cylinder unit having a gear shift piston for actuating a shifting element in the form of a multi-plate clutch, and a gear shift pressure chamber in which an actuating pressure may be built up by supplying operating fluid. The gear shift piston-cylinder unit has a centrifugal oil chamber that is separated from the gear shift pressure chamber by a gear shift piston. Operating fluid may be supplied to the centrifugal oil chamber via a centrifugal oil line supplied by a first supply line. The hydraulic controller has a second supply line for supplying operating fluid to the centrifugal oil line. The second supply line may be closed and opened by a centrifugal oil valve.
    Type: Application
    Filed: July 17, 2012
    Publication date: June 12, 2014
    Applicant: Daimler AG
    Inventors: Michael Baraga, Markus Brandenburg, Henrik Kalczynski, Thomas Kull
  • Patent number: 8738241
    Abstract: A machine having a pump overspeed protection system operating thereon includes an internal combustion engine, a plurality of ground engaging elements, and a drivetrain coupling the internal combustion engine and the ground engaging elements. The drivetrain includes a torque converter having a locked configuration and an unlocked configuration. The machine also includes a plurality of pumps driven by the internal combustion engine. An electronic control is in communication with the internal combustion engine, the torque converter, and the plurality of pumps.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: May 27, 2014
    Assignee: Caterpillar Inc.
    Inventors: Michael Evan Hague, Sameer Marathe, Zhiyong Wei, Matthew Stephen Marquette
  • Patent number: 8668467
    Abstract: An integrated fluid handling apparatus 10 includes a power take off device 108 having a rotating power take off mechanism 122, a hydraulic pump 104 having a rotating fluid pump mechanism 146, a flow torque tube 106, and an electric motor/generator 102 having a rotating electric power conversion mechanism 173. A rotational power transfer system includes connector devices 128, 138, 166 and 172 that are drivingly connected to and that drivingly connect the mechanisms 122, 146 and 173 in one mode of operation. The electric motor/generator 102 includes heat exchange fluid flow passages that establish a fluid flow path to the inlet of the pump. The mechanisms 122, 146 and 173, and the connector devices 128, 138, 166 and 172 are assembled and used as a whole within a housing, without externally exposed mechanical drive connections and without externally exposed fluid connections, between such mechanisms and devices.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: March 11, 2014
    Assignee: Parker Hannifin Corporation
    Inventors: Robert Bruce Douglas, Dale Vanderlaan, Bruce D. Larkin
  • Publication number: 20130327031
    Abstract: A combined power take-off and hydraulic pump assembly includes a power take off including a housing portion having an opened end, an input put mechanism that is adapted to be connected to a source of rotational energy, and an output mechanism that is rotatably driven by the input mechanism. The assembly also includes a hydraulic pump including a housing portion having an opened end, a fluid inlet port that is adapted to communicate with a reservoir containing a quantity of relatively low pressure hydraulic fluid, and a pumping mechanism that is rotatably driven by the output mechanism of the power take-off. An intermediate housing has a first opened end that cooperates with the opened end of the housing portion of the power take-off and a second opened end that cooperates with the opened end of the housing portion of the hydraulic pump. The intermediate housing also has a fluid outlet port that communicates with the pumping mechanism and that is adapted to communicate with a hydraulically driven device.
    Type: Application
    Filed: February 7, 2012
    Publication date: December 12, 2013
    Applicant: PARKER-HANNIFIN CORPORATION
    Inventors: James E. Bohn, Darrel Hannaford, Brian L. Rang
  • Patent number: 8572958
    Abstract: A hydraulic energy source for supplying a downstream hydraulic system with hydraulic energy. In particular, a hydraulic system for controlling and/or cooling a transmission preferably a dual clutch transmission. The hydraulic energy source enables a first partial volume flow which is produced at a comparatively high system pressure and which is used to supply an actuator of the hydraulic system and a second partial volume flow which is produced at a comparatively low cooling pressure and which is used to cool the hydraulic system, to be produced The hydraulic energy source has an electrically driveable first volume flow source which is used to produce the first partial volume flow and a second volume flow source which is used to produce the second partial volume flow. The second volume flow source is drivingly connected independently of an internal combustion engine.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: November 5, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Marco Grethel, Martin Staudinger
  • Patent number: 8528325
    Abstract: A pump apparatus for use on a vehicle or industrial application having a housing in which an end cap is disposed. Multiple hydraulic pumps driven by a prime mover are mounted on the end cap and connected to hydraulic ports formed in the end cap. An auxiliary pump may be drivingly coupled to the prime mover and a power take off unit may also be connected thereto. The end cap may further include a charge pump mounting surface and a charge port for connecting a charge pump.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: September 10, 2013
    Assignee: Hydro-Gear Limited Partnership
    Inventor: Raymond Hauser
  • Patent number: 8505290
    Abstract: A hydraulic excavator includes a rotation motor (31) for rotating an upper rotating structure. The rotation motor (31) includes an electric motor (32), a hydraulic motor (40), and a reduction gearbox (33). The hydraulic motor (40) includes a motor mechanism (50) and a clutch mechanism (70). The motor mechanism (50), which is a vane-type hydraulic motor, is engaged with/disengaged from a motor shaft (37) by the clutch mechanism (70). When rotation speed of the upper rotating structure is low, and a required value of output torque of the rotation motor (31) is high, an operation of driving the output shaft (35) by the hydraulic motor (40) is performed in the rotation motor (31).
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: August 13, 2013
    Assignee: Daikin Industries, Ltd.
    Inventors: Toshiyuki Sakai, Shigetoshi Shimoo
  • Publication number: 20130174540
    Abstract: The present invention relates to a work machine having a drive unit which drives one or more hydraulic pumps of a hydraulic system of the work machine via an output shaft, wherein a clutch is provided which can be controlled or is designed so that it separates the output shaft from the hydraulic pump or pumps in towing load operation.
    Type: Application
    Filed: July 10, 2012
    Publication date: July 11, 2013
    Applicant: Liebherr-Hydraulikbagger GmbH
    Inventor: Simon Meier
  • Publication number: 20130091833
    Abstract: A hydraulic control system and a hydraulic control method are disclosed. The hydraulic control system comprises a first closed pump (P1) and a first engine (M1) connected with each other, a second closed pump (P2) and a second engine (M2) connected with each other, and a hydraulic motor (P3). The first closed pump (P1), the second closed pump (P2) and the hydraulic motor (P3) are connected in parallel. Compared with the prior art, the present hydraulic control system has advantages of wider engine model selection range, higher reliability and better micro-motion performance.
    Type: Application
    Filed: April 11, 2011
    Publication date: April 18, 2013
    Applicants: HUNAN ZOOMLION SPECIAL VEHICLE CO., LTD, ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY CO. LTD.
    Inventors: Chunxin Zhan, Quan Liu, Yuan Zhang, Chunyang Song, Shaojun Wang, Zhihua Yuan
  • Patent number: 8360222
    Abstract: A transmission braking system includes a vehicle drive train and at least one hydraulic motor. The hydraulic motor includes a front shaft and a rear shaft. The rear shaft has an anti-rotation element. An engagement mechanism is slidably affixed to the vehicle drive train, and selectively couples with the anti-rotation element to militate against a rotation of the front and rear shafts. A four-wheel locking system is also provided. The four wheel locking system includes a shaft-coupling engagement mechanism slidably affixed to one of the hydraulic motors. The shaft-coupling engagement mechanism selectively couples with the anti-rotation elements of the motors for allowing a summing of the output torque. The transmission braking system and the four-wheel locking system may be provided in a combined system.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: January 29, 2013
    Assignee: Limo-Reid, Inc.
    Inventor: James A. O'Brien, II
  • Publication number: 20130008152
    Abstract: An energy storage system, for a hybrid vehicle including an internal combustion engine having an output shaft and a transmission operably coupled to the output shaft, includes a reservoir containing working fluid, a reversible pump/motor in fluid communication with the reservoir, a first clutch selectively drivably coupling the output shaft of the engine and the reversible pump/motor, a second clutch selectively drivably coupling an output shaft of the transmission and the reversible pump/motor, and an accumulator containing working fluid and gas. The accumulator is in fluid communication with the reversible pump/motor to deliver pressurized working fluid to the reversible pump/motor when operating as a motor to drive one of the respective output shafts of the engine and the transmission, and to receive pressurized working fluid discharged by the reversible pump/motor when operating as a pump driven by the one of the respective output shafts of the engine and the transmission.
    Type: Application
    Filed: September 13, 2012
    Publication date: January 10, 2013
    Applicant: ROBERT BOSCH GMBH
    Inventors: Kenric B. Rose, William G. Spadafora, Edward Greif
  • Publication number: 20120317965
    Abstract: The present a hydraulic system and a method for operating a hydraulic system that includes an engine, at least one hydraulic pump, a pump box interposed between the engine and the at least one hydraulic pump, at least one hydraulic clutch pack interposed between the pump box and the at least one hydraulic pump, at least one valve, a hydraulic fluid reservoir, a clutch actuation pump, and one or more electronics. The at least one hydraulic clutch pack selectively transmits torque to the at least one hydraulic pump. The at least one valve may be opened to supply pressurized hydraulic fluid to the at least one clutch pack and may be closed to interrupt a supply of pressurized hydraulic fluid to the at least one clutch pack in order to selectively engage or disengage the clutch pack.
    Type: Application
    Filed: February 17, 2010
    Publication date: December 20, 2012
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventor: Francis Edward Pagnotta, JR.
  • Publication number: 20120312006
    Abstract: A control system for hybrid construction machine includes an engine, a main pump to be driven by the engine, a rotary shaft linking an assist pump, a regenerative hydraulic motor and a motor generator, and a clutch for linking the engine and the rotary shaft.
    Type: Application
    Filed: February 23, 2011
    Publication date: December 13, 2012
    Inventors: Haruhiko Kawasaki, Masahiro Egawa
  • Patent number: 8261543
    Abstract: A working vehicle with an HST in which over-rotation of a hydraulic pump in the HST or the pump input shaft thereof is prevented when a main clutch is disconnected during a run. When a main clutch connection/disconnection detection means detects the disconnection state of the main clutch during a run, a control means judges whether a vehicle speed detected by a vehicle speed detection means is at least a set speed or not, and if the vehicle speed is at least the set speed, the movable swash plate of the hydraulic pump in an HST is controlled to sustain it at the current inclination angle.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: September 11, 2012
    Assignee: Yanmar Co., Ltd.
    Inventors: Hitoshi Nomura, Keiichi Hayashi, Hidehiro Yuki
  • Publication number: 20120180473
    Abstract: A hydrodynamic torque converter having a pump wheel accommodated in a housing, a turbine wheel, which can be driven by the pump wheel, and a torsional vibration damper, where the torsional vibration damper has a damper input drive component and a damper output drive component, which can rotate to a limited degree with respect to the damper input drive component to oppose the action of at least two damper stages which are operatively connected in series and which each have at least one energy storage element, where the torsional vibration damper also has an intermediate damper component, which is arranged operatively between the damper stages and which directly or indirectly accommodates a vibration absorber, where the energy storage elements of the damper stages are substantially arranged on a common radius, where the vibration absorber is arranged adjacent to the torsional vibration damper in the axial dimension.
    Type: Application
    Filed: March 27, 2012
    Publication date: July 19, 2012
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Christian Huegel, Thorsten Krause
  • Patent number: 8220257
    Abstract: An axle driving apparatus includes a first housing having a plurality of cooling fins, an axle rotatably mounted in the first housing, a hydraulic stepless speed change assembly disposed within the first housing. The axle driving apparatus also includes a second housing having a plurality of cooling fins, an axle rotatably mounted in the second housing, a hydraulic stepless speed change assembly disposed within the second housing. A connecting means, such as a bar and/or plate connects the first and second housings. The plurality of cooling fins on the first housing has a different configuration that the plurality of cooling fins on the second housing.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: July 17, 2012
    Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.
    Inventors: Masaru Iida, Fumitoshi Ishino, Manabu Kawakami
  • Patent number: 8196399
    Abstract: A module for use in connection with a dual pump apparatus, where each pump is hydraulically connected to a separate hydraulic motor. The module may include motors and/or an engine for ease of installation in a vehicle, providing flexibility for different applications. Various brackets, stabilizers and other elements are provided to assist in securing the module to the vehicle.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: June 12, 2012
    Assignee: Hydro-Gear Limited Partnership
    Inventors: Raymond Hauser, Scott W. Keller
  • Publication number: 20120110992
    Abstract: An electric capstan that is able to save power and make use more convenient. The electric capstan includes an air pump, a motor, a reduction gear and a winching roller, and further includes an engagement-disengagement gear, wherein the input shaft of the air pump is connected to or separated from the output shaft of the motor by the engagement-disengagement gear.
    Type: Application
    Filed: July 14, 2011
    Publication date: May 10, 2012
    Applicant: NINGBO CHIMA WINCH CO., LTD.
    Inventor: Mingkui ZHENG
  • Publication number: 20110099992
    Abstract: The invention relates to a hydrodynamic torque converter having an impeller wheel, a turbine wheel and an oscillation damper which is accommodated in the converter housing, and a converter lockup clutch. Two damper stages are arranged here as a serial damper between the output hub of the torque converter and the converter lockup clutch, and a damper stage is arranged between the turbine wheel and the output hub. In order to improve the damping properties, a rotary oscillation absorber is additionally provided which is arranged between the dampers and is also connected to the turbine wheel in a rotationally fixed fashion.
    Type: Application
    Filed: June 12, 2009
    Publication date: May 5, 2011
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventors: Heiko Magerkurth, Christian Huegel, Andreas Meissner
  • Patent number: 7841176
    Abstract: A transaxle including a hydrostatic transmission mounted in a transmission housing and having a pair of hydraulic pumps and hydraulic motors operatively connected together. First and second axle housings are mounted on opposite ends of the transmission housing, with output axles mounted in the axle housings, where each output axle is connected to its respective hydraulic motor through a gear train in the axle housing. A brake is provided on each axle housing to directly engage one of the gears in the gear train to provide a braking force for the output axles.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: November 30, 2010
    Assignee: Hydro-Gear Limited Parntership
    Inventors: Thomas J. Langenfeld, Matthew C. Roney, Shane A. Deters, Raymond Hauser
  • Publication number: 20100251706
    Abstract: A hydraulic coupling for use in a vehicle drive train having a fluid path which extends between the housing of the hydraulic coupling and a coupling mechanism. The fluid path includes a first aperture formed in the housing with a first diameter and a longitudinal axis, as well as a second aperture formed in the coupling mechanism. A rigid conduit extends between the first and second apertures with a first portion having a diameter that is less than the first diameter of the first aperture so as to define an adjustment gap that allows the rigid conduit to move out of alignment with the longitudinal axis in response to misalignment between the first and second apertures. In addition, the rigid conduit provides resistance to torque imposed upon the coupling mechanism.
    Type: Application
    Filed: April 3, 2009
    Publication date: October 7, 2010
    Inventors: Andrew Nathan Edler, Daniel Philip Fisher, Matthew George Fox
  • Publication number: 20100050625
    Abstract: An axle driving apparatus includes a first housing having a plurality of cooling fins, an axle rotatably mounted in the first housing, a hydraulic stepless speed change assembly disposed within the first housing. The axle driving apparatus also includes a second housing having a plurality of cooling fins, an axle rotatably mounted in the second housing, a hydraulic stepless speed change assembly disposed within the second housing. A connecting means, such as a bar and/or plate connects the first and second housings. The plurality of cooling fins on the first housing has a different configuration that the plurality of cooling fins on the second housing.
    Type: Application
    Filed: November 13, 2009
    Publication date: March 4, 2010
    Inventors: Masaru IIDA, Fumitoshi Ishino, Manabu Kawakami
  • Publication number: 20100043419
    Abstract: A working vehicle with an HST in which over-rotation of a hydraulic pump in the HST or the pump input shaft thereof is prevented when a main clutch is disconnected during a run. When a main clutch connection/disconnection detection means (112) detects (S2) the disconnection state of the main clutch (22) during a run, a control means (110) judges (S3) whether a vehicle speed detected by a vehicle speed detection means (116) is at least a set speed or not, and if the vehicle speed is at least the set speed, the movable swash plate (55) of the hydraulic pump (51) in an HST (50) is controlled to sustain it at the current inclination angle (S4).
    Type: Application
    Filed: October 11, 2007
    Publication date: February 25, 2010
    Applicant: Yanmar Co., Ltd
    Inventors: Hitoshi Nomura, Keiichi Hayashi, Hidehiro Yuki
  • Publication number: 20100018194
    Abstract: A hydraulic energy recovery and a mechanical drive system in one unit that also provides integral mounting of hydraulic pump/motors for primary drive, secondary drive, and pumps for cooling, lubrication, and low pressure systems along with a mounting position for a power take-off device.
    Type: Application
    Filed: October 5, 2009
    Publication date: January 28, 2010
    Inventors: Joseph A. Kovach, James H. Blalock, Steven C. Rink, Stacy H. Turner, Hao Zhang
  • Publication number: 20090288408
    Abstract: A hydraulic circuit that enables smooth absorption of the energy of a return fluid from a hydraulic actuator by means of an energy recovery motor. A return fluid passage to which the fluid discharged from a boom cylinder is branched is provided at the tank passage side of a solenoid valve of a boom control circuit. The return fluid passage comprises two return passages, which are provided with a flow rate ratio control valve for controlling a ratio of fluid that branches off into the return passages. The flow rate ratio control valve is comprised of a solenoid valve disposed in the return passage, which is provided with an energy recovery motor, and a solenoid valve disposed in the return passage, which branches off the upstream side of the solenoid valve.
    Type: Application
    Filed: February 27, 2006
    Publication date: November 26, 2009
    Applicant: SHIN CATERPILLAR MITSUBISHI LTD.
    Inventors: Shoji Tozawa, Madoka Binnaka, Hideto Furuta
  • Publication number: 20090236169
    Abstract: The working vehicle includes an axle unit that has a differential gear device, an axle case, an axle input shaft and first and second main output shafts, and an HST unit that has a hydraulic pump main body, a hydraulic motor main body, a capacity adjustment mechanism, an HST case, a pump shaft and a motor shaft, an HST input shaft, and an HST output shaft, wherein the axle unit is directly or indirectly supported by the vehicle frame so as to be positioned close to a first main driving wheel in a state where the axle input shaft extends in a vehicle widthwise direction, wherein the HST unit is directly or indirectly supported by the vehicle frame at a position away from the axle unit in a state where the HST output shaft extends in the vehicle widthwise direction, and wherein the HST output shaft and the axle input shaft are operatively connected to each other through an endless type transmission member.
    Type: Application
    Filed: March 20, 2009
    Publication date: September 24, 2009
    Inventors: Hiroshi SUGIMOTO, Hideki Kanenobu, Koji Iwaki, Kenta Sashikuma
  • Publication number: 20090183504
    Abstract: An engine and drive train system suitable for personal or commercial transportation vehicles. The system converts the expansive energy of compressed air or gas into mechanical energy to produce motion or force. The engine of the present invention further uses the intrinsic kinetic energy of the vehicle in motion to generate and store compressed air or gas for in-situ or later use. The engine may also be used for braking by the introduction of high pressure air or gas at maximum displacement.
    Type: Application
    Filed: January 23, 2009
    Publication date: July 23, 2009
    Inventor: Frederick Michael Shofner, II
  • Publication number: 20090173066
    Abstract: A hydraulic drive system for storing and releasing hydraulic fluid includes a high pressure storage device, a low pressure storage device, a pump operating at a range of pump speeds for converting between mechanical energy and hydraulic energy, and a motor operating at a range of motor speeds for converting between hydraulic energy and mechanical energy. The pump and motor are both fluidly connected to the high and low pressure storage devices. The hydraulic drive system further includes a control valve fluidly connected to the high pressure storage device, the pump and the motor, the control valve being operable to selectively distribute high pressure fluid between the pump, motor and high pressure storage device.
    Type: Application
    Filed: January 3, 2008
    Publication date: July 9, 2009
    Inventor: Vincent Joseph Duray
  • Patent number: 7526919
    Abstract: The invention relates to a drive system (1) having a first driving shaft (2) and having a second driving shaft (3). The second driving shaft (3) is connected to a cylinder barrel of a hydrostatic piston machine (4) in a torsionally rigid manner. The displacement volume of the hydrostatic piston machine (4) can be shifted by means of a shifting means (5), and the first driving shaft (2) can be mechanically coupled to the second driving shaft (3) through a clutch (6). The shifting means (5) and the clutch (6) can be actuated hydraulically and, for the purpose of actuation, are connected to a common control-pressure connection (11) or a common working-line connection (134).
    Type: Grant
    Filed: March 4, 2005
    Date of Patent: May 5, 2009
    Assignee: Brueninghaus Hydromatik GmbH
    Inventors: Herbert Dreher, Clemens Krebs
  • Patent number: 7497081
    Abstract: There is provided a hydraulic fluid supply structure including: a discharge line fluidly connected to a discharge port of a hydraulic pump body and regulated to have a first pressure value; an external hydraulic fluid extraction line for supplying the hydraulic fluid to an actuator for raising and lowering a working machine, the external hydraulic fluid extraction line being fluidly connected to the discharge line through a resistance valve; a PTO hydraulic fluid line for supplying the hydraulic fluid to a hydraulic operating type clutch mechanism for engaging or disengaging power transmission to the working machine, the PTO hydraulic line being fluidly connected to the discharge line through a throttle valve and regulated to have a second pressure value lower than the first pressure value; and a PTO switching valve interposed in the PTO hydraulic fluid line so as to turn ON/OFF the supply of the hydraulic fluid to the hydraulic clutch mechanism.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: March 3, 2009
    Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.
    Inventor: Shigenori Sakikawa
  • Publication number: 20080276609
    Abstract: The modular transmission uses only a pair of small and light hydraulic machines of remarkably improved volumetric efficiency with pistons having body portions substantially as long as the axial length of the respective cylinders in which they reciprocate. The two hydraulic machines operate in a closed loop, one being used as a pump driven by the vehicle's engine, and the other used as a motor. Each machine has a fully articulatable swash plate. By computer control, the angles of the swash plates of the two machines are infinitely varied to provide an appropriate optimum ratio of engine/wheel speed for all conditions from start-up, city driving, hill climbing varied according to load and steepness, and over-drive for highway. This complete vehicle operation is attained while the vehicle's engine continues to operate at relatively constant speeds and relatively low RPM.
    Type: Application
    Filed: July 21, 2008
    Publication date: November 13, 2008
    Applicant: TORVEC, INC.
    Inventors: Keith E. Gleasman, Matthew R. Wrona
  • Publication number: 20080264051
    Abstract: A working machine including an internal combustion engine for supplying torque to the driving wheels of the working machine, and a transmission line arranged between the internal combustion engine and the driving wheels for transmitting torque from the internal combustion engine to the driving wheels. The working machine further including at least one hydraulic pump in a hydraulic system for moving an implement arranged on the working machine and/or steering the working machine. The transmission line includes at least one electric machine for driving or braking the driving wheels, and/or for generating electric power for the at least one hydraulic pump.
    Type: Application
    Filed: October 14, 2005
    Publication date: October 30, 2008
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Hans Ericson, Joakim Unneback, Sven-Ake Carlsson, Reno Filla
  • Publication number: 20080179159
    Abstract: A hydromechanical transmission having a self actuating clutch assembly. The self-actuating clutch assembly comprises a first and second gear clutching elements and a shaft clutching element that engages a shaft. The shaft clutching element is a cone clutch that is actuated by a ball element that is biased towards the shaft clutching element by a spring element that is disposed through the shaft.
    Type: Application
    Filed: January 29, 2007
    Publication date: July 31, 2008
    Applicant: SAUER-DANFOSS INC.
    Inventor: Frederic W. POLLMAN
  • Patent number: 7334404
    Abstract: There is provided a pump unit including a housing, a first and a second pump shafts, a first and a second hydraulic pump main bodies, a first and a second trunnion type movable swash pates, and a first and a second transmission gears. The housing has an inlet port for introducing oil from the outside into its pump accommodating chamber, an oil passage for communicating between the pump accommodating chamber and its gear accommodating chamber, and a discharge port for taking out oil from the gear accommodating chamber to the outside. The pump accommodating chamber includes a supporting wall that supports each base end of the swash plates so that each operational end of the swash plates is directed to the opposite directions to each other. The inlet port and the oil passage are respectively provided at one side and the other side of the pump accommodating chamber with the supporting wall as a reference.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: February 26, 2008
    Assignee: Kanzaki Kokyukoki Mfg., Co., Ltd.
    Inventors: Shigenori Sakikawa, Tomoyuki Tsuji, Shingo Araki
  • Publication number: 20070251229
    Abstract: A transmission structure of a power unit for a vehicle is provided with a hydrostatic continuously variable transmission for shifting and transmitting driving force from an internal combustion engine to a rear wheel. An oil pump supplies oil to a hydrostatic continuously variable transmission and a neutral/drive switching clutch which is arranged between the transmission and a rear wheel. A hydraulic piston adjacent to each set of driving friction plates and driven friction plates is moved by pressure in an oil pressure chamber and which connects and disconnects the driving force. An oil passage to the neutral/drive switching clutch is branched from an oil passage from the oil pump to the upstream side of the transmission. The resulting configuration prevents a lowering operating pressure of the neutral/drive switching clutch.
    Type: Application
    Filed: April 24, 2007
    Publication date: November 1, 2007
    Inventors: Masahiko Nakatsuka, Kenichi Nakano, Masaki Cho, Kaznhiro Takeuchi
  • Patent number: 7257947
    Abstract: A power steering system for a vehicle includes a hydraulic pump interconnected with a power steering gear and a fluid coupling that operatively connects a drive shaft of an engine of the vehicle with the hydraulic pump. The power steering system also includes an electronic controller operable to provide a variable control signal based on received input and a power electronic converter that energizes the fluid coupling in response to the control signal to vary torque transmitted via said fluid coupling.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: August 21, 2007
    Assignee: GM Global Technology Operations, Inc.
    Inventor: Chandra S. Namuduri