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| Number | Title | Issue Date |
| 8152183 | Steering system for a zero-turn radius vehicle A steering apparatus for a zero-turn radius vehicle using a steering mechanism coupled to a first set of wheel assemblies by a plurality of cables. User input to the steering mechanism causes the cables to turn the first set of wheel assemblies about a vertical axis... | 04/10/2012 |
| 8132588 | Valve A valve for use between a first fluid side and a second fluid side is disclosed herein. The valve comprises a pair of subassemblies, each one slidable between a closed position and an open position. Each subassembly comprises a first component comprising a first com... | 03/13/2012 |
| 8109747 | Drive system having a variable output gerotor pump A variable output assembly including a hydraulic pump disposed on a pump running surface located on a center section, end cap or other hydraulic mounting member. The pump may be a gerotor or other rotatable pump body. A support member is disposed between the pump ru... | 02/07/2012 |
| 8104277 | Pump assembly 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 ma... | 01/31/2012 |
| 8057335 | Brake actuation assembly An emergency braking system for use in connection with a drive apparatus including a drive belt and pulley system for transferring power from a prime mover to a transmission or transaxle. The braking system includes a pulley engaged to the drive belt and a spring en... | 11/15/2011 |
| 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 |
| 8055399 | Control systems and methods for electric motors of utility vehicles Electronic control systems and related control methods for controlling electric auxiliary motors for performing work, such as electric deck motors for mower blades. The apparatus is shown in use with a vehicle that includes a mowing deck. Features of the control sys... | 11/08/2011 |
| 8042322 | Single shaft driven multiple output vehicle A vehicle comprising a frame with an electric power source secured to the frame. The vehicle further comprises an electric motor driven by the electric power source and secured to a deck and having at least a first side and a second side formed opposite the first si... | 10/25/2011 |
| 8028520 | Center section for hydraulic drive apparatus 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... | 10/04/2011 |
| 8011678 | Steering system for a zero-turn radius vehicle A steering apparatus for a zero-turn radius vehicle using a steering mechanism coupled to a first set of wheel assemblies by a plurality of cables. User input to the steering mechanism causes the cables to turn the first set of wheel assemblies about a vertical axis... | 09/06/2011 |
| 8001883 | Return to neutral device for a hydraulic apparatus In a hydrostatic device using an axial piston pump, a yoke is mounted so that it contacts the movable swash plate of the hydrostatic transmission. The yoke is biased by a spring-type mechanism to force the swash plate to return to neutral, and the set position of th... | 08/23/2011 |
| 7988582 | Planet brake differential A drive apparatus with a housing, a first and second axle mounted in the housing and a ring gear located within the housing is provided. A brake clutch assembly is located on each axle with a planetary gear arrangement, a drive plate engaged to the planetary gear ar... | 08/02/2011 |
| 7984662 | Vehicle direction sensing mechanism A mechanism for sensing the direction of a vehicle, or other application using a drive device such as a hydrostatic transmission. An actuation mechanism is mounted to a rotatable shaft or gear in the drive device and has an actuated position when the shaft or gear i... | 07/26/2011 |
| 7927245 | Hydraulic motor apparatus 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 ... | 04/19/2011 |
| 7926624 | Cylinder block brake A cylinder block brake for a hydrostatic transmission or transaxle is provided. A pawl and return spring are located in a housing adjacent to a motor cylinder block. The pawl has a first, biased position where it is not engaged to the motor cylinder block and a seco... | 04/19/2011 |
| 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 |
| 7918088 | Dual pump assembly A dual pump apparatus for use on a vehicle or industrial application having a housing in which a pair of hydraulic pumps are mounted and driven by a prime mover. The prime mover is drivingly coupled to a main input shaft, which drives the hydraulic pumps. An auxilia... | 04/05/2011 |
| 7908850 | 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... | 03/22/2011 |
| 7900447 | 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 an input shaft mounted in the common housing perpendicular to the two pump shafts. A pair of center sections o... | 03/08/2011 |
| 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 |
| 7806667 | Dual pump A dual pump apparatus having two pumps mounted in a housing, where the housing comprises two elements mounted on opposite sides of a hydraulic mounting member or center section. The pumps are mounted on one side of the hydraulic mounting member in a pump cavity, and... | 10/05/2010 |
| 7726126 | Dual pump apparatus with power take off A drive apparatus includes a pair of axial piston pump assemblies in an inline relationship, each pump assembly having an end cap mounted to a pump housing to form a sump. The pump assemblies are mounted to a gearbox at one end thereof, and an input shaft extends in... | 06/01/2010 |
| 7624573 | Drive apparatus including a pump assembly A dual pump apparatus for use on a vehicle or industrial application having a housing in which a pair of hydraulic pumps are mounted and driven by a prime mover. The prime mover is drivingly coupled to a main input shaft, which drives the hydraulic pumps. An auxilia... | 12/01/2009 |
| 7568497 | Combined check valve and pressure relief valve A valve for use in regulating the flow of fluid between a first and a second fluid side is provided. The valve comprises a valve body and an aperture extending through the valve body. The aperture comprises an inner wall, a first aperture diameter at the first end o... | 08/04/2009 |
| 7566207 | Dual pump transmission A dual pump apparatus for use on a vehicle or industrial application and having a pair of hydraulic pumps that are disposed in separate chambers within a housing. A pair of input shafts are disposed within the housing to drive the respective hydraulic pumps and one ... | 07/28/2009 |
| 7536857 | 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 an input shaft mounted in the common housing perpendicular to the two pump shafts. A pair of center sections o... | 05/26/2009 |
| 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 |
| 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 |
| 7476172 | Motor apparatus including brake mechanism A brake mechanism for a motor assembly including a motor and a reduction gear assembly driving an output shaft or axle is disclosed. A brake rotor is driven by the motor shaft and a brake puck is operatively engageable with the brake rotor for moving the brake rotor... | 01/13/2009 |
| 7476171 | Hydraulic motor apparatus including brake mechanism A hydraulic motor assembly having a motor and gear reduction set mounted in a housing. A brake assembly may be mounted in the port block to provide braking for the output axle or it may be located externally to the axle housing portion of the assembly. The housing m... | 01/13/2009 |
| 7473207 | Transmission shaft rotation sensor switch A system for use with a vehicle such as a tractor having an output device such as a mower deck or snow thrower comprising a sensor positioned to detect the rotational direction of a shaft such as an output axle. The operational status of the output device can be cha... | 01/06/2009 |
| 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 |
| 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 |
| 7451780 | Multifunction valve for use in a hydraulic component A valve apparatus is disclosed for use in regulating the flow of fluid between a closed hydraulic loop and a fluid source in a hydraulic circuit, where the valve apparatus provides up to four different functions including a check valve, a neutral valve, a relief val... | 11/18/2008 |
| 7430942 | Hydrostatic transmission A hydrostatic transmission mountable to a vehicle frame. The hydrostatic transmission is adapted to removeably receive an axle shaft. The hydrostatic transmission is also adapted to be mounted to at least one of two opposed side members of the vehicle frame. The opp... | 10/07/2008 |
| 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 |
| 7409890 | Hydraulic motor apparatus 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 ... | 08/12/2008 |
