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| Number | Title | Issue Date |
| 8112991 | Hydrostatic transmission A hydrostatic transmission includes a hydraulic pump, a hydraulic motor, and a center section. The center section is formed therein with first and second fluid passages connecting kidney ports opened at a pump mounting surface to kidney ports opened at a motor mount... | 02/14/2012 |
| 8074451 | Electric motor actuation of a hydrostatic pump A hydraulic motor system for improved frequency response includes a hydraulic variator having a pump and a motor, wherein the pump includes a variable angle swash plate, and the system further includes an electric actuator for controlling an angle or torque of the s... | 12/13/2011 |
| 8056333 | Pump and engine configuration An engine configuration is disclosed. The engine configuration incorporates hydraulic pumps within the sump of the engine, and drives the hydraulic pumps from one of the engine shafts. A portion of the hydraulic pumps extends outside the sump of the engine so that h... | 11/15/2011 |
| 8046992 | Axle driving apparatus An axle driving apparatus for being mounted on the body frame of a vehicle and for independently rotating drive wheel members. The axle driving apparatus includes a first axle driving unit (18L) having a housing (40) and a single axle (20L), the... | 11/01/2011 |
| 8001777 | Axle driving apparatus An axle driving apparatus in which a hydraulic pump and a hydraulic motor which constitute a hydrostatic transmission are disposed on a center section. In a horizontal portion of the center section are provided a pair of linear oil passages in parallel to each other... | 08/23/2011 |
| 7926266 | Hydraulic drive apparatus 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 wh... | 04/19/2011 |
| 7921643 | Hydrostatic transaxle A hydrostatic transaxle (IHT) comprises a hydrostatic transmission (HST), an axle, a deceleration drive train, a first housing member, and a second housing member. The HST includes first and second hydraulic displacement units fluidly connected to each other. The fi... | 04/12/2011 |
| 7886534 | Integrated hydrostatic transmission assembly A hydrostatic transmission mountable to a vehicle frame as a unit. The hydrostatic transmission has a nose cup to which a motor module is mounted. Passageways in an end block connect the pump element and motor module in a closed loop. The end block also has passagew... | 02/15/2011 |
| 7866152 | Hydrostatic transaxle In a housing of a hydrostatic transaxle, an HST including mutually fluidly connected hydraulic pump and motor, an axle, and a deceleration gear train interposed between the hydraulic motor and the axle are disposed. The deceleration gear train includes an L-shaped c... | 01/11/2011 |
| 7856820 | Axle driving apparatus An axle driving apparatus comprises a housing. The housing contains a hydrostatic transmission, a differential unit driven by the hydrostatic transmission, a pair of axles mutually differentially connected through the differential unit, and a restricting mechanism f... | 12/28/2010 |
| 7854117 | Center section for hydraulic transmission A center section assembly for mounting inside the housing of a hydrostatic or hydraulic drive apparatus is disclosed. The center section includes generally flat side edge surfaces formed adjacent and perpendicular to a cylinder block running surface, and shaped to e... | 12/21/2010 |
| 7647770 | Hydraulically driven working vehicle and hydraulic transaxle In a hydraulic four-wheel drive vehicle, a rear transaxle incorporates a hydraulic motor for driving rear wheels, a front transaxle incorporates a hydraulic motor for driving front wheels, and hydraulic pressure fluid pipes interposed between the front and rear tran... | 01/19/2010 |
| 7621125 | Axle driving system An axle driving system which houses in a housing thereof a hydrostatic transmission, axles, and a driving gear train for connecting output means of the hydraulic transmission and axles, so as to transmit power from a driving source to the hydrostatic transmission an... | 11/24/2009 |
| 7596946 | Axle driving apparatus An axle driving apparatus for being mounted on the body frame of a vehicle and for independently rotating drive wheel members. The axle driving apparatus includes a first axle driving unit (18L) having a housing (40) and a single axle (20L), the... | 10/06/2009 |
| 7546731 | Axle driving apparatus An axle driving apparatus for being mounted on the body frame of a vehicle and for independently rotating drive wheel members. The axle driving apparatus includes a first axle driving unit (18L) having a housing (40) and a single axle (20L), the... | 06/16/2009 |
| 7536858 | Axle driving apparatus An axle driving apparatus for being mounted on the body frame of a vehicle and for independently rotating drive wheel members. The axle driving apparatus includes a first axle driving unit (18L) having a housing (40) and a single axle (20L), the... | 05/26/2009 |
| 7523611 | Hydrostatic transmission with external manifold A hydrostatic transmission including a hydraulic pump, a hydraulic motor, and an external manifold surrounded by and in contact with air for connecting the hydraulic pump and a hydraulic motor. The external manifold facilitates heat transfer from hydraulic fluid flo... | 04/28/2009 |
| 7516615 | Pump A hydraulic pump apparatus having an internal sump formed by a housing having an internal portion and an end cap secured to the housing. A rotatable cylinder block is located in the sump and driven by an input shaft extending into the housing. The pump apparatus als... | 04/14/2009 |
| 7513113 | System and method for electronic actuation of axle driving apparatus A system and method for electronically controlling the displacement of hydraulic pumps, transmissions or transaxles. A moveable swash plate is cooperable with a rotatable hydraulic pump for controlling the output thereof, and a rotatable trunnion arm is coupled to t... | 04/07/2009 |
| 7503174 | Actuator assembly A drive apparatus having an actuator assembly mounted on a control device is disclosed. The drive apparatus comprises an input, a variable drive system, a control device, and an actuator assembly. The drive apparatus is mounted on a vehicle that comprises an operati... | 03/17/2009 |
| 7497082 | Center section for hydraulic transmission A two piece center section assembly for mounting inside the housing of a hydrostatic or hydraulic drive apparatus is disclosed. The assembly includes separate pump and motor support portions that are preferably generally identical in structure. The need for fastener... | 03/03/2009 |
| 7487635 | Hydrostatic transaxle In a housing of a hydrostatic transaxle, an HST including mutually fluidly connected hydraulic pump and motor, an axle, and a deceleration gear train interposed between the hydraulic motor and the axle are disposed. The deceleration gear train includes an L-shaped c... | 02/10/2009 |
| 7487636 | Hydraulic drive apparatus In a hydraulic drive apparatus such as a transaxle, a rotatable hydraulic pump and rotatable hydraulic motor are disposed in a housing forming a sump. A hydraulic mounting member such as a center section is disposed in the sump and includes a pump mounting surface f... | 02/10/2009 |
| 7484365 | Axle driving apparatus An axle driving apparatus comprises a housing. The housing contains a hydrostatic transmission, a differential unit driven by the hydrostatic transmission, a pair of axles mutually differentially connected through the differential unit, and a restricting mechanism f... | 02/03/2009 |
| 7484364 | Axle driving apparatus An axle driving apparatus for being mounted on the body frame of a vehicle and for independently rotating drive wheel members. The axle driving apparatus includes a first axle driving unit (18L) having a housing (40) and a single axle (20L), the... | 02/03/2009 |
| 7454907 | Hydrostatic transmission An axle driving apparatus including a hydrostatic transmission disposed in a housing, with at least one axle extending from a side of the housing and an input shaft extending into the housing to drive the hydrostatic transmission, an output shaft engaged to and driv... | 11/25/2008 |
| 7454908 | Zero turn transaxle A transaxle including a hydrostatic transmission mounted in a transmission housing and having a pair of hydraulic pumps and hydraulic motors operatively connected together through a center section mounted in the housing. First and second axle housings are mounted on... | 11/25/2008 |
| 7430862 | Axle driving apparatus An axle driving apparatus for being mounted on the body frame of a vehicle and for independently rotating drive wheel members. The axle driving apparatus includes a first axle driving unit (18L) having a housing (40) and a single axle (20L), the... | 10/07/2008 |
| 7430863 | Pump unit and hydrostatic transmission There is provided a pump unit configured to be capable of transmitting a rotational power from a driving power source which is operatively connected thereto to an actuator through a pair of hydraulic fluid lines. The pump unit includes: an input shaft; a hydraulic p... | 10/07/2008 |
| 7422077 | Transmission mechanism for vehicles having HST and pressure oil supply system therefor A transmission mechanism and a pressure oil supply system therefor are provided for use in work vehicles provided with a work device externally of the body of the vehicle at longitudinal one side thereof, the transmission mechanism being simple in construction and s... | 09/09/2008 |
| 7418820 | Wind turbine with hydraulic transmission A wind turbine includes a closed loop hydrostatic transmission. The rotor is directly coupled to a low-speed high torque hydraulic motor, which is pressure-reversible to act as a pump. A variable displacement, pressure compensated hydrostatic transmission receives t... | 09/02/2008 |
| 7415823 | Hydraulically driven working vehicle and hydraulic transaxle In a hydraulic four-wheel drive vehicle, a rear transaxle incorporates a hydraulic motor for driving rear wheels, a front transaxle incorporates a hydraulic motor for driving front wheels, and hydraulic pressure fluid pipes interposed between the front and rear tran... | 08/26/2008 |
| 7415821 | Hydraulic motor unit A hydraulic motor unit including a hydraulic motor (1′) which is connected to two working lines (3,4). The swiveling angle (α) of the hydraulic motor (1′) is adjustable by an adjusting unit (7) which is provided with a regulating pis... | 08/26/2008 |
| 7412828 | Adjustable hydraulic motor apparatus A hydraulic motor assembly having a hydraulic motor mounted in a motor housing and an axle mounted in a separate axle housing. A ring gear and a port block are mounted between the motor housing and the axle housing. A swash plate is mounted in the motor housing and ... | 08/19/2008 |
| 7406825 | Steering system for a hydraulic drive apparatus An electronic steering control system for controlling the lateral movement of a vehicle powered by a pair of hydrostatic drive devices, where the system controls a pair of actuators. Each actuator is configured to move a control member associated with one of the hyd... | 08/05/2008 |
| 7395665 | Hydraulic transaxle for garden care vehicle A hydrostatic transmission assembly includes a first gerotor motor, a pump housing, a first variable displacement pump, a second gerotor motor, and a second variable displacement pump. The first gerotor motor includes a first output shaft aligned along a first axis.... | 07/08/2008 |
| 7392654 | Zero turn drive apparatus A drive apparatus for a zero turn vehicle or similar application comprising a pair of pumps mounted in a common housing and having coaxial input shafts and a main input shaft mounted in the common housing perpendicular to the two pump shafts. A pair of center sectio... | 07/01/2008 |
| 7387185 | Axle driving unit for a lawn tractor An axle driving unit includes a pair of axles, a differential unit for differently connecting the pair of axles to each other, a hydraulic pump, a hydraulic motor, a motor shaft, an output gear on said motor shaft for drivingly connecting to said differential unit, ... | 06/17/2008 |
| 7383913 | Hydraulic transaxle and vehicle comprising it A hydraulic transaxle including: a variable displacement hydraulic motor with a movable swash plate whose tilt angle defines a displacement of the hydraulic motor; a casing incorporating the hydraulic motor; and a mechanism for determining a range of the tilt angle ... | 06/10/2008 |
| 7383683 | Zero-turn hydrostatic transaxle A hydraulic drive device including a center section for rotatably mounting a hydraulic pump and hydraulic motor on respective running surfaces. The center section further includes a pair of ports connecting the running surfaces, where the ports are not located in th... | 06/10/2008 |
