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| Number | Title | Issue Date |
| 8151927 | Wheel motor device There is provided a wheel motor device including a hydraulic motor unit. The hydraulic motor unit includes a hydraulic motor main body, a motor shaft, a motor case and a port block. The port block includes a motor surface to which the motor case is connected, a pump... | 04/10/2012 |
| 7967099 | Method and arrangement of a plurality of propel pumps in a hydrostatically driven compactor Fluid control propulsion system, machine including the system, and method of controlling the propulsion of a machine having a compacting drum and a wheel mounted on an axle, drum and axle motors operatively connected with the drum and the axle, respectively, and dru... | 06/28/2011 |
| 7770685 | Propulsion system for a work vehicle having a single drive pump and differential capability A hydraulic drive circuit for a work vehicle including a positive displacement flow divider positioned intermediate a hydraulic pump and a plurality of hydraulic motors. ... | 08/10/2010 |
| 7753160 | Lawn mower hydraulic hose routing This invention relates to a lawn mower. In certain example embodiments, the lawn mower includes one or more of: (a) a cooling baffle for efficiently cooling a hydraulic fluid tank and/or fluid therein using air flow caused by a combustion engine used for driving mow... | 07/13/2010 |
| 7748489 | Agricultural header presence sensor with traction control An agricultural combine for supporting an agricultural header and carrying that agricultural header to a field to harvest a crop. The combine includes a chassis, front and rear drive wheels, a hydraulic motor, a device for sensing and a controller. The front and rea... | 07/06/2010 |
| 7658257 | Pump system and axle-driving system A pump system includes a housing, an input shaft, a pump shaft; a hydraulic pump body, a PTO shaft, a power transmission gear train, and a PTO clutch mechanism. The housing has a narrow gear accommodating space surrounding a region including a mesh point between the... | 02/09/2010 |
| 7431122 | Hydraulic axle-drive device A transaxle (1), having a hydraulic drive unit (20) and a pair of left and right wheel support units (2L and 2R), is suspended from a vehicle frame so as to be turnable around a turning-center axis oriented in a fore-and-aft direction of ... | 10/07/2008 |
| 7419025 | Hydraulic transaxle and vehicle comprising it A hydraulic transaxle comprises a transaxle casing for supporting left and right axles, a pair of hydraulic motors disposed in the transaxle casing so as to drive the respective left and right axles, hydraulic ports provided in the transaxle casing so as to fluidly ... | 09/02/2008 |
| 7406824 | Hydrostatic transmission circuit with replenishing for a vehicle The circuit comprises a main hydraulic pump (52), two main ducts (50, 54), a booster pump (56), a hydraulic motor (10; 20) which comprises two elementary motors (11, 12; 21, 22) for driving a first displacement member (1, 2)... | 08/05/2008 |
| 7377353 | Four wheel traction control valve system A hydrostatic propulsion system includes a hydrostatic circuit fluidly connecting left front and right front motors in parallel with an outlet of a pump, left rear and right rear motors in parallel with an inlet of the pump, left front motor and right rear motor in ... | 05/27/2008 |
| 7357215 | Steering apparatus for electric industrial vehicle A controller controls right and left wheel drive motors based on a tire angle detected by a tire angle sensor such that the angular velocities of a pair of drive wheels about the center of a turn of the vehicle are equal to each other. The controller determines a st... | 04/15/2008 |
| 7357214 | Four-wheel drive combine with slip control An agricultural combine has a variable displacement pump connected to four drive motors that drive four wheels. An electronic controller monitors the speed of each wheel and reduces the torque of the motor that drives the wheel when the wheel slips. The controller r... | 04/15/2008 |
| 7357462 | Hydraulic brake system for a wind energy plant The hydraulic brake system comprises a piston/cylinder unit (14) for activating and releasing a brake (12), comprising a volume (16) adapted to have a pressurized working fluid supplied thereto for moving the piston (24) from a braking po... | 04/15/2008 |
| 7353904 | Steerable primary axle A steerable primary axle for a fairway mower or other machine includes a pair of motors mounted in fixed positions on opposing ends of an axle. The mechanical drive system includes a pair of input shafts having input bevel gears, a pair of output shafts with output ... | 04/08/2008 |
| 7337869 | Hydraulic hybrid vehicle with integrated hydraulic drive module and four-wheel-drive, and method of operation thereof A vehicle includes an integrated drive module coupled to an axle thereof. The module includes a hydraulic motor configured to provide motive power at an output shaft, and a differential for distributing the motive power to right and left portions of the axle. The hy... | 03/04/2008 |
| 7331416 | Oil-hydraulic vehicle This invention provides an oil-hydraulic vehicle whose driving force can be adjusted finely and which can be run smoothly and comfortably. The oil-hydraulic vehicle comprises a wheel-driving means 40 for driving a wheel 31, which includes an oil-hydrau... | 02/19/2008 |
| 7331412 | Vehicle having twin transmissions for driving respective wheels A vehicle comprises a vehicle frame, a prime mover mounted on the vehicle frame, a laterally turnable wheel disposed at one side of the vehicle frame, a pair of drive wheels disposed at the other side of the vehicle frame, a steering operation device, a traveling op... | 02/19/2008 |
| 7325636 | Front-wheel drive steering compensation method and system A method of controlling the speed of a right front wheel and a left front wheel on a work machine includes receiving a speed command based at least partially on an operator input and monitoring at least one wheel steering angle of at least one front wheel. A first f... | 02/05/2008 |
| 7318595 | Variable ride control A skid steer vehicle has a chassis with four drive wheels suspended from the chassis that are damped by four damping cylinders. An electronic controller varies the damping of the cylinders in an automatic mode, based on certain operational parameters of the vehicle,... | 01/15/2008 |
| 7316287 | Hydraulic pump unit, hydraulic pump set, and working vehicle There is provided a working vehicle having first and second hydraulic pump units operatively driven by a driving source and arranged away to each other in a width direction of the vehicle. In the working vehicle, each of the first and second hydraulic pump units inc... | 01/08/2008 |
| 7302797 | Hydraulic system having a post-pressure compensator A hydraulic system for a work machine is disclosed. The hydraulic system has a reservoir configured to hold a supply of fluid and a source configured to pressurize the fluid. The hydraulic system also has a fluid actuator, a first valve, and a second valve. The firs... | 12/04/2007 |
| 7299891 | Hydraulic drive mechanism for mobile vehicles To make operating a hydraulic drive mechanism above its admissible maximum rotational speed without separating the mechanical connection to the drive wheel possible, the motor (1) is adjusted in displacement to almost no displacement and the pressure-medium s... | 11/27/2007 |
| 7293841 | Hydraulic motor and brake control system and method of controlling the same A hydraulic control system for operating at least one hydraulic motor and at least one hydraulic brake. In one specific embodiment of the invention, the hydraulic motor and brake are part of an industrial vehicle. ... | 11/13/2007 |
| 7284764 | Sprayer strut suspension A chassis suspension for agricultural equipment, the chassis suspension comprising: an axle having a substantially upright journal adapted for upright axial constraint of an inner journal therein; an inner journal extending into the upright journal, the inner journa... | 10/23/2007 |
| 7281723 | Sprayer strut suspension A chassis suspension for agricultural equipment, the chassis suspension comprising: an axle having a substantially upright journal adapted for upright axial constraint of an inner journal therein; an inner journal extending into the upright journal, the inner journa... | 10/16/2007 |
| 7281601 | Fluid driven differential A fluid driven differential, having a fluid filled housing, an input shaft, and a pair of output shafts. The input shaft is attached to an automobile driveshaft outside of the housing and to a propeller inside the housing. The output shafts are each attached to an a... | 10/16/2007 |
| 7273125 | Variable resolution control system The present disclosure is directed to a control system for a power machine that provides selected resolution of the adjusted speed control and other controls, such as attachment controls, to provide more options to the operator for fine positioning. The present disc... | 09/25/2007 |
| 7255193 | Speed equalizing linkage design for dual hydrostatic transmissions An HST propel system includes first and second pumps having displacements variable in response to movement of first (31) and second (33) control shafts, respectively; and a linkage arrangement for moving the control shafts in unison in response to move... | 08/14/2007 |
| 7252169 | Windrower rear axle suspension system A suspension system for the rear axle of a self-propelled agricultural windrower. The axle is split into two components, each having an air spring to absorb shocks. The two air springs are interconnected by a tube to equalize the internal pressure. A pair of pins ca... | 08/07/2007 |
| 7249806 | Hydraulic motor and brake control system and method of controlling the same A hydraulic control system for operating at least one hydraulic motor and at least one hydraulic brake. In one specific embodiment of the invention, the hydraulic motor and brake are part of an industrial vehicle. ... | 07/31/2007 |
| 7243755 | Drive mechanism for a mobile vehicle A drive mechanism for a mobile vehicle has one first hydraulic motor (9) and one second hydraulic motor (10) which are in permanent operative connection via a summarizing transmission (12, 14) and drive one output shaft (17). In order to ... | 07/17/2007 |
| 7237629 | Zero-turn radius vehicle with steerable front wheels The present invention relates to a zero turning radius vehicle having at least one steerable front wheel and a multistage steering input system separately capable of steering the at least one front wheel and selectively driving the drive wheels. A front wheel steeri... | 07/03/2007 |
| 7237492 | Railway car drive system A railway car drive system comprising a first railway car mounting a power generator, a power converter, a driving motor and a power storage; a second railway car mounting a power converter, a driving motor and a power storage; and a power transmission connecting ea... | 07/03/2007 |
| 7231999 | Steerable primary axle A steerable primary axle for a fairway mower or other machine includes a pair of motors mounted in fixed positions on opposing ends of an axle. The mechanical drive system includes a pair of input shafts having input bevel gears, a pair of output shafts with output ... | 06/19/2007 |
| 7216896 | Heavy hauling system with hydraulic-powered extendable axles A carriage for transporting heavy loads on conventional roads is disclosed. The carriage comprises a central beam extending the length of the carriage and a plurality of cross beams. At least one of the plurality of cross beams comprises a hollow element having a fi... | 05/15/2007 |
| 7178334 | Hydrostatic vehicle drive system comprising a differential lock The invention relates to a hydrostatic vehicle drive system (1) comprising a first and a second hydraulic pump (2, 3), and a first and a second hydraulic motor (7, 12). Said hydraulic pumps (2, 3) and said hydraulic motors (7, 12) ... | 02/20/2007 |
| 7172046 | Four-wheel drive combine with slip control An agricultural combine has a variable displacement pump connected to four drive motors that drive four wheels. An electronic controller monitors the speed of each wheel and reduces the torque of the motor that drives the wheel when the wheel slips. The controller r... | 02/06/2007 |
| 7163078 | Hydrostatic drive The invention relates to a hydrostatic drive comprising at least one hydraulic pump (1) and a first and a second hydraulic motor (6, 25), which are respectively connected to said hydraulic pump (1) by means of two service lines (4, 41, 5, 5 | 01/16/2007 |
| 7137315 | Wheel hub having driving mechanism A wheel hub for attaching to a vehicle includes a hydraulic engine received in a hub shell and attached or secured to the vehicle, for allowing the hub shell to be rotated relative to the hydraulic engine and the vehicle. The hydraulic engine includes a rotatable sp... | 11/21/2006 |
| 7137469 | Running power transmission mechanism for a vehicle A running power transmission mechanism for a vehicle for transmitting drive power from a driving source to a pair of steering wheels and a pair of non-steering wheels. A main-HST outputs synchronized drive power to the steering and non-steering wheels. The non-steer... | 11/21/2006 |
