Pump And Motor In Series With Planetary Gearing Patents (Class 475/83)
  • Patent number: 10889173
    Abstract: A transaxle system for a golf car, wherein the system comprises a transaxle and a matting interface. The transaxle comprises a plurality of mounting flanges fixedly mountable to at least one axle tube of the golf car, wherein the at least one axle tube houses at least one wheel axle, and the transaxle is operably couplable to the at least one wheel axle. The transaxle additionally comprising a transaxle mounting collar that is fixedly mounted to or integrally formed with a housing of the transaxle. The mating interface is mountable to the transaxle mounting collar, and is structured and operable to have an integrated internal combustion engine-transmission unit of the golf car mounted thereto.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: January 12, 2021
    Assignee: Textron Inc.
    Inventors: Zekarias W. Yohannes, Matthew Wilson, David A. Smith, Chris L. Normand
  • Patent number: 10865872
    Abstract: A hydraulic transaxle includes a transaxle casing including an upper transaxle housing and a lower casing, hydrostatic transmission (“HST”), and an axle. The HST has a hydraulic pump and a hydraulic motor that are fluidly connected to each other. The hydraulic motor has a motor shaft that is drivingly connected to the axle through a reduction gear train that is disposed between the hydraulic pump and the axle. Reduction gear train has a gear shaft supported by the upper transaxle housing via a ball bearing. At least a part of the upper transaxle housing is formed by a gear top cover made of metal and covering the reduction gear train. Ball bearing is supported by the upper transaxle housing and the gear top cover.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: December 15, 2020
    Assignee: KANZAKI KOKYUKOKI MFG. CO., LTD.
    Inventors: Hiroshi Sugimoto, Takehiro Ota, Toshifumi Yasuda
  • Patent number: 10753448
    Abstract: In a transaxle, the transaxle includes a hydrostatic continuously variable transmission, at least one axle, a gear train for drivingly connecting the hydrostatic continuously variable transmission and the axle, a housing accommodating the hydrostatic continuously variable transmission, the axle, the gear train and storing an oil therein, and a reservoir tank connected to the housing so that the oil in the housing can be moved back and forth. The reservoir tank has a rectangular parallelepiped shape and is disposed on a side of a final reduction bull gear included in the gear train and above the axle along an axis direction of the axle.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: August 25, 2020
    Assignee: KANZAKI KOKYUKOKI MFG. CO., LTD.
    Inventor: Katsumoto Mizukawa
  • Patent number: 10703524
    Abstract: The present disclosure provides a glue supply device for a labeling unit with a glue printer, comprising: a storage tank for glue, a supply line for supplying glue from the storage tank to the glue printer, a continuously delivering glue pump which is embodied to deliver glue from the storage tank into the supply line, and a hydropneumatic reservoir for the glue, wherein the hydro-pneumatic reservoir is arranged at the supply line upstream of the glue printer.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: July 7, 2020
    Assignee: KRONES AG
    Inventors: Georg Gertlowski, Stefan Poeschl, Josef Scheck, Florian Habersetzer, Heinrich Bielmeier, Robert Scheibenpflug, Alexander Feigl, Andreas Kraus, Dennis Baumann
  • Patent number: 10670127
    Abstract: A transaxle comprises a hydrostatic transmission (hereinafter, “HST”), an axle, a gear train transmitting power from the HST to the axle, a casing carrying the HST, the gear train and the axle and providing a fluid sump. The casing has an air space over the fluid sump of a gear chamber, a breather cap for ventilation of the air space and for an oil cap is installed on a top part of the casing, and a partition plate is installed right under the breather cap and prevents the fluid sup facing directly to the breather cap.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: June 2, 2020
    Assignee: KANZAKI KOKYUKOKI MFG. CO., LTD.
    Inventors: Hiroshi Sugimoto, Nobuhiro Shimobayashi, Toshifumi Yasuda, Takehiro Oota, Daisuke Murashima
  • Patent number: 10569776
    Abstract: A tractor includes an engine, a transmission coupled to the engine, a hydraulic pump driven by the engine, at least one of a tractor implement, attachment, or control moved by the hydraulic pump, a sensor, and a controller coupled to the transmission. The controller is configured to downshift the transmission based on a signal from the sensor.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: February 25, 2020
    Assignee: DEERE & COMPANY
    Inventor: Andy B. Appleton
  • Patent number: 10539208
    Abstract: A power train is provided having a reduced size and weight. A hydraulic motor includes a rotatable output shaft. Wheel bearings rotatably support a rotatable housing relative to a motor housing. A hydraulic clutch mechanism permits or prohibits rotation of a second carrier of a second planetary gear reducer about the center of rotation of the output shaft. The hydraulic clutch mechanism is disposed on the radially inner side relative to the wheel bearings.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: January 21, 2020
    Assignee: KOMATSU LTD.
    Inventor: Teruya Kubota
  • Patent number: 10458543
    Abstract: A power-split transmission which is designed to be operated with either first or second deceleration logics. The second deceleration logic has a higher deceleration dynamic than the first deceleration logic, and is designed to disengage an engaged range clutch immediately so as to reduce the transmission ratio by way of a hydrostatic unit with a maximum dynamic. A method of operating the transmission includes: monitoring various vehicle parameters while the vehicle is operated with the first deceleration logic; detecting that at least one set limit value has been exceeded while the vehicle operated with the first deceleration logic; activating the second deceleration logic, to immediately disengage an engaged range clutch; reducing a transmission ratio to a maximum using the hydrostatic unit, the hydrostatic unit being displaced with a maximum dynamic; and engaging the range clutch and activating the first deceleration logic.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: October 29, 2019
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Simon Geiger, Matthias Madlener, Robin Cramer
  • Patent number: 9410610
    Abstract: A product may include a differential unit, and an electrical machine may be interconnected with the differential unit. The differential unit and the electrical machine may be lubricated by a fluid. A reservoir may be defined above the electrical machine. The reservoir may receive the fluid during operation of the differential unit and may selectively store and release the fluid.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: August 9, 2016
    Assignee: BorgWarner Inc.
    Inventors: Larry A. Pritchard, Thaddeus Kopp
  • Patent number: 9249664
    Abstract: In a bent axis type axial piston motor, so as to smoothly rotate a drive shaft without lowering motor efficiency and brake the drive shaft if necessary, when the drive shaft is rotated through a cylinder block by causing piston rods to reciprocate, relative rotation between separate plates and friction plates is allowed by removing a pressing force applied by a braking piston, and when the separate plates and the friction plates are pushed to a brake force receiving plate by the braking piston, relative rotation between the separate plates and the friction plates is restrained and thus the drive shaft is braked. Restriction members are disposed between a casing and the brake force receiving plate so as to restrain the brake force receiving plate from moving relative to the casing along the axis of the drive shaft.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: February 2, 2016
    Assignee: Komatsu Ltd.
    Inventors: Takashi Hori, Teppei Asano, Masayuki Hosaka
  • Publication number: 20150051038
    Abstract: The invention concerns a transmission mounted in a housing between a turbine and a generator on top of a tower of a wind turbine, comprising a gearbox and in the gearbox a main gear mounted on a main gear shaft and a pinion that engages a set of gear teeth of the main gear. The pinion is mounted on a pinion shaft and the pinion shaft is coupled to a hydraulic pump mounted on the gearbox, a hydraulic motor drives the generator. In accordance with the invention the main gear shaft and the rotor shaft together form a common shaft and a main gear shaft bearing is mounted between the common shaft and the gearbox and at least two tension bars prevent the rotation of the gearbox and leave the gearbox free to move in linear directions.
    Type: Application
    Filed: January 10, 2013
    Publication date: February 19, 2015
    Inventor: Bart Richard Van Neerbos
  • Patent number: 8958959
    Abstract: The invention relates to a self-propelling construction machine which has a chassis 1 which has wheels or crawler track units 1A, 1B. The construction machine according to the invention is distinguished by the fact that the gear mechanism system 6 for transmitting the drive power from the drive unit 5, which comprises at least one internal combustion engine 5A, to the working unit 4, which comprises at least one working assembly 4A, does not have a conventional clutch with which the working unit can be activated but instead has a hydrodynamic gear mechanism 10 which has a drive shaft 10A and an output shaft 10B.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: February 17, 2015
    Assignee: Wirtgen GmbH
    Inventors: Winfried von Schönebeck, Sascha Schwippert, Cyrus Barimani, Günter Hähn
  • Patent number: 8920276
    Abstract: A controller is provided for varying gear ratios in a transmission system including at least one planetary gear train disposed within a housing. The controller includes a ratio control gear set, a ratio control pump, and a relief valve. The ratio control gear set includes a sun gear, a planet carrier, and a ring gear. The planet carrier is configured to rotatably connect to an output shaft of an engine. The ring gear is configured to mesh with a sun gear of the planetary gear train. The ratio control pump includes a body configured to rigidly connect to the housing, and a rotor rigidly coupled to the sun gear of the ratio control gear set. The rotor is configured to co-act with the body to pump fluid. The relief valve is configured to restrict fluid egress from the ratio control pump.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: December 30, 2014
    Assignee: Caterpillar Inc.
    Inventors: Russell Ross Henderson, Jr., Abdul Karim Maoued, Aaron Benjamin Crabtree
  • Patent number: 8920277
    Abstract: A hydromechanical transmission has a hydraulic pump-driven hydraulic motor of a hydrostatic continuously variable transmission and a mechanical multi-step variable speed transmission connected to a drive shaft of the hydraulic motor, which can be shifted into operation by a gear shifting device. In order to adapt the hydromechanical transmission with as compact as possible a design to diverse installation cases with little effort, the gear shifting device is arranged directly adjacent to the hydraulic motor and is consolidated with the latter into a preassembled constructional unit.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: December 30, 2014
    Assignee: Linde Hydraulics GmbH & Co. KG
    Inventors: Bernward Welschof, Ulrich Schwarz
  • Patent number: 8840504
    Abstract: A continuously variable transmission for a hydraulic mechanism in hybrid cars with recovered power-split energy mainly comprises a multi-function planet differential gear train pump and a hydraulic variable pump (motor). The planet differential gear train pump provides a hydraulic constant pump, and a planet gear system thereof provides a speed-adjustable function as well as a speed-collecting function. Thereby, the planet differential gear train pump of the present invention is used to substitute the conventional planet gear system and the hydraulic constant pump in the continuously variable transmission.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: September 23, 2014
    Assignee: Ningbo Surely Meh Co., Ltd.
    Inventor: Bin Chen
  • Patent number: 8795117
    Abstract: A transmission for transferring torque from a prime mover includes a first input shaft adapted to be driven by the prime mover, a second input shaft, an output shaft and an epicyclic gearset. The gearset includes a ring gear being driven by the first input shaft, pinion gears being driven by the ring gear, a sun gear driven by the second input shaft and driving the pinion gears, and a carrier driving the output shaft. A reaction motor drives the second input shaft. A controller controls the reaction motor to vary the speed of the second input shaft and define a gear ratio between the first input shaft and the output shaft based on the second input shaft speed.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: August 5, 2014
    Assignee: Magna Powertrain USA, Inc.
    Inventor: David W. Wenthen
  • Publication number: 20140141917
    Abstract: A final drive for a vehicle is disclosed. The final drive includes a motor assembly, a planetary gear train and a drive sprocket. The motor assembly includes a hydraulic motor, an output shaft, a housing, a thrust bearing, a brake and first, second and third chambers. The housing includes a supply port, a first passageway, a second passageway and a drain port.
    Type: Application
    Filed: November 20, 2012
    Publication date: May 22, 2014
    Applicant: Caterpillar Inc.
    Inventors: Christopher J. Demick, Nathan S. Enderle, Paul A. Dvorak
  • Patent number: 8684874
    Abstract: A transmission for transferring torque from a prime mover includes a first input shaft adapted to be driven by the prime mover, a second input shaft, an output shaft and an epicyclic gearset. The gearset includes a ring gear being driven by the first input shaft, pinion gears being driven by the ring gear, a sun gear driven by the second input shaft and driving the pinion gears, and a carrier driving the output shaft. A reaction motor drives the second input shaft. A controller controls the reaction motor to vary the speed of the second input shaft and define a gear ratio between the first input shaft and the output shaft based on the second input shaft speed.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: April 1, 2014
    Assignee: Magna Powertrain, Inc.
    Inventor: David W. Wenthen
  • Publication number: 20140018201
    Abstract: A hydrostatic mechanical power split transmission includes a housing, at least one first power branch having at least one hydraulic pump and at least one hydraulic motor, and at least one drive shaft provided with gear wheel elements, which is disposed inside the housing and can be directly or indirectly driven by at least one drive engine, in particular an internal combustion engine as a further power branch, the drive shaft being able to selectively act either directly or indirectly on the sun gear of a planetary gear system by way of at least one clutch, to be decoupled from the planetary gear system, wherein the planetary gear system can be switched to a state of constrained motion by way of further clutches as a function of the respective operating state of the power split transmission.
    Type: Application
    Filed: December 20, 2011
    Publication date: January 16, 2014
    Applicant: HYTRAC GmbH
    Inventor: Detlef Tolksdorf
  • Patent number: 8608605
    Abstract: A transmission apparatus for a tractor is operable to transmit a forward drive force in a wide speed changing range to the traveling device and which is operable also to transmit a reverse drive force to the traveling device. A planetary transmission section is configured to output the forward drive force in whichever case a hydrostatic stepless speed changing section is speed-changed to a forward rotation speed change state or a reverse rotation speed change state. A low speed transmission clutch couples a low speed side speed changing gear to a counter shaft to be rotatable therewith. A high speed transmission clutch couples a high speed side speed changing gear to the counter shaft to be rotatable therewith. A reverse transmission clutch couples a reverse transmission gear to an output shaft to be rotatable therewith.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: December 17, 2013
    Assignee: Kubota Corporation
    Inventors: Minoru Hiraoka, Atsushi Hayashi, Masaru Andou, Masakazu Hino
  • Patent number: 8571774
    Abstract: One disclosed embodiment relates to a propulsion system for a machine. The propulsion system may include a prime mover operatively connected through a continuously variable transmission to a propulsion device. The propulsion system may also include propulsion-system controls that control an operating parameter of the continuously variable transmission, which may include adjusting the operating parameter based on operator input. Controlling the operating parameter may also include determining an adjustment limit for the operating parameter based on one or more operating conditions and applying the adjustment limit to the operating parameter to modify at least one of acceleration and jerk of the machine based on the one or more operating conditions.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: October 29, 2013
    Assignee: Caterpillar Inc.
    Inventors: Kristofor Lee Dahl, Brian Douglas Hoff, Richard George Ingram, Michael Anthony Spielman, Jr., Benjamin B. Schmuck, Alberto Martinez, Jr., Yaang Zhao
  • Patent number: 8545367
    Abstract: A hybrid system includes a hybrid module that is located between an engine and a transmission. The hybrid system includes an energy storage system for storing energy from and supplying energy to the hybrid module. An inverter transfers power between the energy storage system and the hybrid module. The hybrid system also includes a cooling system, a DC-DC converter, and a high voltage tap. The hybrid module is designed to recover energy, such as during braking, as well as power the vehicle. The hybrid module includes an electrical machine (eMachine) along with electrical and mechanical pumps for circulating fluid. A clutch provides the sole operative connection between the engine and the eMachine. The hybrid system further incorporates a power take off (PTO) unit that is configured to be powered by the engine and/or the eMachine.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: October 1, 2013
    Assignee: Allison Transmission, Inc.
    Inventors: James F. Hartz, Nayan V. Patel, Vernon D. Thompson, Paul A. Richardson, Christopher A. Baker, George S. Pelton
  • Patent number: 8523724
    Abstract: A method including activating a first clutch assembly to connect a first rotatable member to a rotating final output member until a shift trigger point is reached to provide a rotational speed to the first rotatable member from the final output member. The first clutch assembly is then deactivated. The second clutch assembly that connected a synchronized second rotatable member with the final output member is then deactivated. A third synchronizer engaged with the first rotatable member, and the first clutch assembly is activated to connect the first rotatable member to the final output member.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: September 3, 2013
    Assignee: Caterpillar Inc.
    Inventor: Kevin Moloney
  • Patent number: 8512207
    Abstract: A method for controlling a transmission assembly includes providing a vehicle having a first power source and a second power source disposed in parallel with the first power source. The first power source includes a prime mover and a transmission assembly. The transmission assembly includes a torque converter coupled to the prime mover. The transmission assembly further includes a clutch that selectively engages the torque converter to a transmission of the transmission assembly. The second power source includes a pump-motor unit, a fluid reservoir and an energy storage unit. A torque value of the second power source is compared to a torque threshold value. The clutch of the transmission assembly is disengaged so that the torque converter of the transmission assembly is disengaged from the transmission of the transmission assembly when the torque value of the second power source is greater than or equal to the torque threshold value.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: August 20, 2013
    Assignee: Eaton Corporation
    Inventors: Michael Anthony Stoner, Vincent Joseph Duray
  • Patent number: 8500587
    Abstract: A system for providing hydraulic power in a machine transmission includes a first hydraulic variator and a second hydraulic variator, each variator having a mechanical input to a hydraulic pump, and a hydraulic motor linked to the hydraulic pump via a hydraulic circuit, and a mechanical output from the hydraulic motor. In an embodiment, the first hydraulic circuit side of one variator is hydraulically connected to the first hydraulic side of the other variator, and the second hydraulic circuit sides are likewise linked together. A common input is geared to the inputs of the variators and a common output is geared to the outputs of the variators, tying the pump and motor of each variator to rotate at the same speed as the counterpart components of the other variator.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: August 6, 2013
    Assignee: Caterpillar Inc.
    Inventors: Hongliu Du, Tony L. Marcott
  • Patent number: 8485929
    Abstract: A motor vehicle power train includes a main drive engine with an output shaft for driving the drive wheels of the motor vehicle, an electric motor which includes a rotor and a stator, also for driving the drive wheels of the motor vehicle, an automatic transmission, with a plurality of selectively settable drive connections, a transmission input shaft and a transmission output shaft, the rotor of the electric motor being disposed in a drive connection between the output shaft of the main drive engine and the transmission input shaft, and can be disengaged from the output shaft with a clutch, and at least one ancillary unit which can be driven by the main drive engine. The rotor of the electric motor includes an exterior drive having a gearing of friction surface which has a driving connection to the at least one ancillary unit.
    Type: Grant
    Filed: October 12, 2009
    Date of Patent: July 16, 2013
    Assignee: Voith Patent GmbH
    Inventor: Bernhard Wust
  • Patent number: 8454469
    Abstract: Power split drive (PSD) transmissions capable of energy recovery and suitable for use in automotive applications. Each PSD transmission includes a mechanical transmission system for mechanically transmitting mechanical power between a rotatable input shaft and a rotatable output shaft, and a hydraulic transmission system containing a fluid for hydraulically transmitting hydraulic power between the input shaft and the output shaft, and at least a third shaft operatively interconnected to one of the mechanical and hydraulic transmission systems. The hydraulic transmission system is operatively coupled by at least a first planetary gear train to the mechanical transmission system. According to the invention, the PSD further comprises means operatively associated with at least one of the mechanical and hydraulic transmission systems for storing and releasing energy within the PSD transmission, the energy storing and releasing means comprising a flywheel or an accumulator or a combination thereof.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: June 4, 2013
    Assignee: Purdue Research Foundation
    Inventors: Monika Marianne Ivantysynova, Blake Adam Carl, Kyle Richard Williams
  • Patent number: 8452500
    Abstract: A powertrain includes an engine and a continuously variable transmission including a planetary gear arrangement and a variator. An input drives the variator and the planetary gears. A first planetary output gear is connected to the first output of the planetary gear arrangement. A second planetary output gear is connected to the first output, and a third planetary output gear is connectable by a first clutch to a second output of the planetary gear arrangement. A first output member is connected to the third planetary output gear, a second clutch releasably connects the first output member with the first planetary output gear, a third clutch connects the first output member with the second planetary output gear, a fourth clutch connects the second output member with the first planetary output gear, and a fifth clutch connects the second output member with the second planetary output gear.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: May 28, 2013
    Assignee: Caterpillar Inc.
    Inventor: John M. Seipold
  • Patent number: 8424633
    Abstract: A continuously variable transmission device (1) for a vehicle with a variator (3), a planetary gear unit (4) and a manual gear unit (9) arranged in a transmission housing. The variator (3) is connected with the planetary gear unit (4) and with the manual gear unit (9) in the area of a first shaft (14) and in the area of a second shaft (15). The variator (3) and the planetary gear unit (4) form a module (2) and are arranged on a common carrier plate (19).
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: April 23, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Gerhard Bailly, Thomas Ratzmann, Jurgen Pohlenz
  • Patent number: 8414454
    Abstract: A load control system for a work vehicle including set rotation speed detection means for detecting a set rotation speed of an engine of the work vehicle, actual rotation speed detection means that senses an actual rotation speed of the engine, a continuously variable speed change device that receives power from the engine of the work vehicle, speed change position detecting means for detecting a speed change operating position of the continuously variable speed change device, operating means for speed-shifting the continuously variable speed change device, and control means for controlling the operation of the operating means.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: April 9, 2013
    Assignee: Kubota Corporation
    Inventors: Eiji Nishi, Keishiro Nishi, Atsushi Shinkai, Yasunobu Nakatani
  • Publication number: 20130068545
    Abstract: A split torque transmission for a track type machine includes an internal combustion engine configured to drive a hydrostatic transmission and a mechanical transmission. The hydrostatic transmission includes a variable displacement pump drivingly connected with the internal combustion engine, and a variable displacement motor fluidly connected with the variable displacement pump and having a hydrostatic transmission output. The mechanical transmission has a forward and reverse mechanism drivingly connected with the internal combustion engine. A single stage unconventional planetary gear set is selectively coupled with the hydrostatic transmission output, the forward and reverse mechanism, and a final output, and is configured to sum outputs of the hydrostatic transmission and the mechanical transmission.
    Type: Application
    Filed: September 16, 2011
    Publication date: March 21, 2013
    Applicant: CATERPILLAR INC.
    Inventor: Michael G. Cronin
  • Patent number: 8393988
    Abstract: A transmission device for a vehicle (1) having a variator (3), which is configured as a hydrostatic device, of a transverse axial construction that can be adjusted at least in the region of a pivot axis (11), a planetary gear set (4) and a manual gear unit (9). The orientation of the pivot axis (11) of the variator (3), following installation in the vehicle, at least approximately corresponds to the orientation of a vehicle vertical axis (16).
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: March 12, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Gerhard Bailly, Thomas Ratzmann, Karl Grad, Jurgen Pohlenz
  • Patent number: 8371983
    Abstract: A hybrid transmission is configured to transfer mechanical power to an output member and includes an input member, an output member, and a transmission case circumscribing first and second differential gear sets, each differential gear set including a plurality of meshingly engaged rotatable elements. The first differential gear set is configured with four nodes for transferring mechanical power, and the second differential gear set is configured with three nodes for transferring mechanical power. Two of the four nodes of the first differential gear set are continuously interconnected to two of the three nodes of the second differential gear set. A first torque transfer clutch is configured to selectively connect the input member to an internal combustion engine. First and second brake devices are configured to selectively interconnect elements of the first and second differential gear sets, the transmission case, the input member, and the output member.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: February 12, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Madhusudan Raghavan, Alan G. Holmes
  • Patent number: 8303448
    Abstract: Disclosed is an apparatus including a stepless speed change device receiving an engine drive; a planetary transmission device for, by a plurality of planetary transmission mechanisms, combining an output from the stepless speed change device and the engine drive not subject to a speed change by the stepless speed change device; and a speed range setting device for outputting the drive combined by the planetary transmission device and divided into a plurality of speed ranges. The planetary transmission device, the speed range setting device and a forward-reverse changeover device are located forwardly of a rear end of an upstream transmission case portion. An electric motor may be used instead of the stepless speed change device.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: November 6, 2012
    Assignee: Kubota Corporation
    Inventors: Minoru Hiraoka, Yoshirou Takao, Masaru Andou
  • Patent number: 8298106
    Abstract: An infinitely variable hydromechanical crossdrive steering transmission having a multiple of forward and reverse ratio ranges and a separately selectable low ratio range in both forward and reverse. The forward and reverse ratio ranges are enabled to shift between ratio ranges in a synchronous manner in both speed and torque, thus smoothly propelling the vehicle from rest through the multiple transmission ranges to maximum speed in a stepless manner.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: October 30, 2012
    Assignee: Berkshire Powertech, Inc.
    Inventor: Robert Francis Larkin
  • Patent number: 8298107
    Abstract: A retrofit kit for an Allison transmission for converting a standard Allison Transmission into a variable speed hybrid using external pressure. The retrofit kit for an Allison transmission includes a main housing; gear sets being disposed in the main housing and including rotational members; clutches being in operable communication to the gear sets; a hydrostatic pump being in operable communication to at least one of the rotational members and having ports; and a fluid circuit being in fluid communication to the hydrostatic pump through the ports and to at least one of the clutches.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: October 30, 2012
    Inventor: Ernie Brookins
  • Publication number: 20120270690
    Abstract: A hydrostatically power-splitting transmission (10), particularly for agricultural and construction equipment, comprises at least two hydrostats (H2), which are hydraulically connected to each other and operate as pumps or as motors, wherein at least one of the hydrostats (H2) can be adjusted or pivoted by means of a controller (16, 20, 21; SK1, . . . SK4), mechanical coupling means (K1, K2; Z1, . . . , Z12), which couple the hydrostats (H1, H2) to an inner drive shaft (W1) and an inner driven shaft (W7), a housing (14, 31) comprising a cover (14) and a housing bottom part (31), wherein the hydrostats (H1, H2), the inner drive and driven shafts (W1, W7), and the mechanical coupling means (Z7, Z9) are disposed and attached on the bottom of the cover (14), and in the lower housing part an outer drive shaft accessible from the outside and a driven shaft are supported, which are operatively connected to the inner drive shaft or driven shaft when the housing is assembled.
    Type: Application
    Filed: January 21, 2009
    Publication date: October 25, 2012
    Applicant: MALI Holding AG
    Inventors: Josef Häglsperger, Peter Dziuba, Markus Liebherr, Katharina Liebherr, Josef Bauer
  • Patent number: 8246502
    Abstract: A variable ratio drive assembly (10) including: a planetary gear device (13) having an input shaft (15), an output shaft (17), with the shafts having a common rotational axis (21), an input gear (16) attached to the input shaft, an output gear (18) attached to the output shaft, a carriage (20) mounted for rotation about said axis, at least one planetary gear (19) meshed with the input gear and output gear, the planetary gear being rotatably mounted in the carriage, a ring gear (23) fixed to the carriage so as to be rotated about said axis, a pump gear (24) meshingly engaged with the ring gear, a pump device (51) drivingly connected to the pump gear and restriction means to control the flow so that said pump device (51) applies a torque to said pump gear to control rotation of said ring gear and therefore rotation of said output shaft.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: August 21, 2012
    Inventors: Antony Richard Esplin, Raymond Noel Rogers
  • Patent number: 8221276
    Abstract: A hydraulic motor assembly having a motor, gear reduction set and axle disposed in a housing is disclosed. A brake assembly may be mounted externally to the axle housing portion of the assembly to provide braking for the output axle. The housing may be formed of separate components, including the axle housing portion, an external surface of a ring gear and a hydraulic motor port block.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: July 17, 2012
    Assignee: Hydro-Gear Limited Partnership
    Inventors: Thomas J. Langenfeld, Shane A. Deters
  • Publication number: 20110300984
    Abstract: A continuously variable transmission for a hydraulic mechanism in hybrid cars with recovered power-split energy mainly comprises a multi-function planet differential gear train pump and a hydraulic variable pump (motor) of through shaft. The planet differential gear train pump provides a hydraulic constant pump, and a planet gear system thereof provides a speed-adjustable function as well as a speed-collecting function. Thereby, the planet differential gear train pump of the present invention is used to substitute the conventional planet gear system and the hydraulic constant pump in the continuously variable transmission. A power input shaft or a power output shaft of the hydraulic variable pump and the planet differential gear train pump are coaxially connected for uniaxially arranging the continuously variable transmission with the hydraulic mechanism power-split energy.
    Type: Application
    Filed: June 2, 2011
    Publication date: December 8, 2011
    Applicant: NINGBO SURELY MEH CO., LTD.
    Inventor: Bin CHEN
  • Patent number: 8061262
    Abstract: A stepper motor suitable for use in a medical imaging environment has (a) a cylindrical central gear having an external surface with circumferentially distributed and radially directed teeth, (b) a shaft for mounting the central gear such that it is constrained to move in rotational motion about its centerline, (c) a cylindrical hoop gear having a bore with an internal surface having circumferentially distributed and radially directed teeth, (d) level arm crank mechanisms for mounting the hoop gear such that it is constrained to move in translational-circular motion about the central gear's centerline, wherein this central gear is further configured to fit within the hoop gear's bore in such a manner that a plurality of the central gear and hoop gear teeth intermesh and cooperate so that the planetary movement of the hoop gear causes the central gear to rotate, and (e) piston mechanisms for applying a fluid pressure driven force to specified points on the hoop gear so as to cause its movement.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: November 22, 2011
    Assignee: The Johns Hopkins University
    Inventors: Dan Stoianovici, Alexandru Patriciu, Dumitru Mazilu, Doru Petrisor, Louis R. Kavoussi
  • Patent number: 8043183
    Abstract: The invention relates to a hydrostatic piston engine (11) and a drive (1) for recovering brake energy. The drive comprises a driving shaft (4) and a first accumulator (12) for accumulating pressure energy. The first accumulator (12) is connected to a hydrostatic piston engine (11). Said hydrostatic piston engine (11) has a coupling (9) and can be connected to the driving shaft (4) by means of the coupling (9). The hydrostatic piston engine (11) comprises a housing in which a cylinder drum and the driving shaft (4) are rotatably received. The cylinder drum can be connected to the driving shaft (4) by means of the coupling (9) in a rotationally fixed manner.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: October 25, 2011
    Assignee: Bosch Rexroth AG
    Inventors: Matthias Mueller, Steffen Mutschler
  • Patent number: 7993230
    Abstract: A hydromechanical powertrain for a ground vehicle. The powertrain, more specifically a transmission, includes an input shaft that is coupled to a rotational power source and an output shaft that is coupled to a load. A first hydrostatic unit coupled to a first gear, while a second hydrostatic unit is selectively coupled to one of a pair of clutches. The first of the clutches has a first clutch gear that is selectably coupled to a first mode gear, which is in turn rotationally fixed to the output shaft. The second of clutches has a second clutch gear that is selectively coupled to a second mode gear, which is in turn rotationally fixed to the input shaft. Also coupled to the input shaft is a planetary gear set.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: August 9, 2011
    Assignee: Deere & Company
    Inventors: Werner Stettler, Jr., Douglas Rene Johnson
  • Patent number: 7942778
    Abstract: A hydromechanical variable speed transmission (1) including outer and inner differential gear trains each having a carrier carrying planet pinions meshing with two coaxial side gears, the side gears of the outer differential gear train being ring gears one of which is an input ring gear (11) and the other (52) of which rotatably drives the planet pinion carrier of the inner differential gear train, the side gears of the inner differential gear train respectively rotatably driving two coaxial output shafts which extend axially outwards through the ring gears (11, 52) of the outer differential gear train, the planet pinion carrier (14) of the outer differential gear train rotatably driving a hydraulic motor (2) which is fluidly coupled by a hydraulic circuit to rotatably drive a hydraulic pump (3) having a pump control for changing the displacement of the hydraulic pump (3) in response to rotation thereof, wherein the pump control is fixed from rotation to thereby isolate the input ring gear (11) from torque re
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: May 17, 2011
    Inventor: Geoffrey Allan Williames
  • Patent number: 7927245
    Abstract: A hydraulic motor assembly having a motor and gear reduction set mounted in a housing. The housing may be formed of separate components, including the external surface of the ring gear and the hydraulic motor port block. The motor assembly may also include pressure relief valves or neutral valves in the motor port block and a brake assembly mounted in the port block or on the motor housing to provide braking for the output axle.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: April 19, 2011
    Assignee: Hydro-Gear Limited Partnership
    Inventors: Thomas J. Langenfeld, Raymond M. Hauser
  • Publication number: 20110015022
    Abstract: The present invention relates to a superposition transmission in several variants and embodiments with hydrostatic-mechanical or electric-mechanical power splitting for the use in vehicles and work machines such as municipal vehicles, handling devices such as telehandlers or forklifts, wheel loaders, tractors and comparable apparatuses, in which an infinitely variable adjustment of the gear ratio is desired independent of the speed of the drive engine. The input shaft (1) is connected with a variator which is in operative connection with two summing planetary gears (12) and (13) arranged parallel with respect to each other. The output occurs in all driving speeds and all driving ranges via the planet carrier arranged as carrier (18).
    Type: Application
    Filed: June 3, 2010
    Publication date: January 20, 2011
    Inventors: Dieter Stoeckl, Heinz Aitzetmueller
  • Publication number: 20100331131
    Abstract: A hydraulic pump device for a work vehicle having a transmission case that houses a PTO shaft (12) comprises: a hydraulic pump (35), a pump input shaft (36) of the hydraulic pump (35) that has a projecting shaft portion projecting into the transmission case (1), a first bevel gear (41), and a second bevel gear (42). The first bevel gear (41) is fitted on the PTO shaft (12) and the second bevel gear (42) is connected to the projecting shaft portion. A holder (38) for supporting the PTO shaft (12) is removably attached to the transmission case (1). The first bevel gear and the second bevel gear are supported to the holder for rotation about respective axes.
    Type: Application
    Filed: August 31, 2009
    Publication date: December 30, 2010
    Applicant: KUBOTA CORPORATION
    Inventor: Kenichiro Tsuji
  • Patent number: 7832919
    Abstract: A gear for driving a drum of a ready-mix concrete truck comprises a driving motor (5) which drives an inner spider gear (7) of a planetary gear. An outer spider gear (16) forms the driven part and a bearing (11), by which the drum of the concrete truck is mounted, is disposed between a planetary gear (23) and the driving motor (5).
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: November 16, 2010
    Assignee: ZF Friedrichshafen AG
    Inventor: Eduard Heilig
  • Publication number: 20100222172
    Abstract: A power transmission system of a hydraulically driven working vehicle comprises: a prime mover supported by a vehicle frame, the prime mover including a prime mover output shaft projecting in the fore-and-aft direction of the vehicle; a pump housing; a hydraulic pump disposed in the pump housing, the hydraulic pump including a pump shaft projecting from the pump housing in the fore-and-aft direction of the vehicle so as to be drivingly connected to the prime mover output shaft; a first hydraulic motor disposed outside the pump housing so as to be fluidly connected to the hydraulic pump; a transaxle supported by one of front and rear portions of the vehicle frame, the transaxle including a transaxle housing, a pair of axles disposed in the transaxle housing so as to be driven by the hydraulic motor, and a differential gear unit disposed in the transaxle housing so as to be drivingly interposed between the hydraulic motor and the pair of axles; a PTO shaft; and a working power train extracting a part of power t
    Type: Application
    Filed: May 10, 2010
    Publication date: September 2, 2010
    Inventors: Norihiro ISHII, Koji Iwaki, Fumitoshi Ishino
  • Publication number: 20100197439
    Abstract: A continuously variable transmission device comprising a variator and a secondary power splitting. For power splitting, a planetary gear set has a first shaft coupled to the transmission input, a second shaft of the gear set coupled a first shaft of the variator, and a third shaft of the gear set couples a second shaft of the variator. First and second shift elements are provided to switch between first and second gear ratio ranges. Via the variator, the gear ratio is continuously variable within the gear ratio range and the two gear ratio ranges overlap. To implement the first gear ratio range, the second shaft of the gear set is connected, via the first shift element, to the transmission output, and to implement the second gear ratio range, the third shaft of the planetary gear set is connected, via the second shift element, to the transmission output.
    Type: Application
    Filed: August 15, 2008
    Publication date: August 5, 2010
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Tobias Weber, Gerhard Bailly, Thomas Ratzmann, Walter Fischer, Jurgen Pohlenz