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| Number | Title | Issue Date |
| 8001751 | Method for gradually relieving pressure in a hydraulic system utilizing reverse fluid flow through a pump of the system A method of gradually relieving pressure in a hydraulic system of a work machine, wherein a pump in fluid communication with the hydraulic system and a fluid reservoir, is operable for pressurizing fluid from the reservoir and pumping the pressurized fluid into the ... | 08/23/2011 |
| 7415919 | Series hydraulic circuit for controlling operation of multiple cutting decks of a tractor A series hydraulic circuit for permitting motorized operation and independent control of a plurality of cutting decks of a mower. The circuit allows separate operation of one of the decks while enabling operation of one or more of the other decks associated with the... | 08/26/2008 |
| 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 |
| 7340875 | Power tool emergency stop system A safety apparatus for a tool driven by a motor removes motor power under certain circumstances. The tool includes a housing moveable over a ground surface for mounting the tool, and a ground-engaging member moveable relative to the housing and disposed to follow th... | 03/11/2008 |
| 7340877 | Cutter unit support roller A vegetation cutter to be mounted on a support vehicle for transport and deployment, has a housing with a rotating blade therein. The housing has a roller mounted for rotation forming the bottom edge of a side of the housing. The roller supports the cutter, allowing... | 03/11/2008 |
| 7303025 | Motor-driven work apparatus A rotatably driveable work tool (1) of a motor-driven work apparatus has, at a front end (2, 3), an end plate (5, 6) lying perpendicularly to a rotational axis (4). The end plate (5, 6) has an outer diameter (DR) which i... | 12/04/2007 |
| 7293397 | Apparatuses and methods for controlling self-propelled machines Apparatuses and methods are provided for controlling a self-propelled machine wherein the apparatuses and methods include a handle and a control device and can utilize first and second linking members. The control device is pivotably coupled to the handle, and inclu... | 11/13/2007 |
| 7290991 | Dual oil supply pump An automotive engine oil pump assembly having first and second pump mechanisms contained within a common housing. A shaft rotatably supported in the housing drives the pump mechanisms in a conventional manner. The pump mechanisms are offset in phase to reduce flow p... | 11/06/2007 |
| 7255185 | Driver of electric automobile There is provided a driving device of an electric car, exactly selecting drive wheels of the electric car in accordance with road circumstances. In the electric car having four or more wheels, all wheels (1 to 4) have driving motors (5 to 8 | 08/14/2007 |
| 7219487 | Agricultural harvesting machines and front attachments therefor An agricultural harvesting machine includes a first gathering element adapted to be driven by a first drive mechanism so as to gather crop and feed the crop in a direction substantially opposite to a direction of motion of the harvesting machine. A second gathering ... | 05/22/2007 |
| 7213662 | Mower with lever actuated drive control A mower includes an engine-driven transmission for driving a pair of wheels at rate that varies according to the position of a transmission setting control selected by an operator. The transmission setting control positions a member that has a stop surface proximate... | 05/08/2007 |
| 7140169 | Feeder controls for a forage harvester An agricultural harvesting machine, such as a forage harvester comprises a set of feedrolls (20, 21, 26, 27) for feeding harvested crop material to a rotating cutterhead (36). The feedrolls are driven by a hydraulic drive means comprising a hydrostatic... | 11/28/2006 |
| 7063177 | Walk behind mower A walk behind mower includes an engine-driven transmission for driving a pair of wheels at rate that varies according to the position of a transmission setting control selected by an operator. The transmission setting control positions a member that has a stop surfa... | 06/20/2006 |
| 6955045 | Oil pump system Variable displacement pump pumps oil to one or the other ports of an oil operated vehicle wheel motor to drive a lawn mower. ... | 10/18/2005 |
| 6951092 | Operator control system for self-propelled vehicles An operator control system for a self-propelled vehicle such as a lawn mower is provided wherein the control system includes two opposing and preferably upwardly extending and converging hand grips each having a corresponding drive control lever associated therewith... | 10/04/2005 |
| 6912831 | Power mower with pump lock-out system A zero turning radius power lawn mower for operation by a standing occupant includes first and second independently driven and controlled rear drive wheels mounted on separate drive axles. A riding platform for supporting the standing occupant or operator is located... | 07/05/2005 |
| 6775966 | Integrated combine reel drive system An integrated combine reel drive system for an agricultural vehicle such as a combine harvester, the drive system having the features of a single integrated hydraulic circuit for activating multiple hydraulic devices carried by the agricultural vehicle. The integrat... | 08/17/2004 |
| 6749037 | Vehicle driving arrangement A vehicle driving arrangement with at least two axes, each having at least one driven wheel that can be acted upon with a torque of a motor, the motor/motors of each axis being arranged in a supply line, the supply lines being parallel to each other and connected wi... | 06/15/2004 |
| 6619020 | Valve mechanism for a combine hydraulic system A hydraulic system for a combine and harvesting assembly having a valve mechanism that automatically routes fluid from a combine hydraulic line to a harvesting assembly hydraulic line when the harvesting assembly line is coupled with the combine hydraulic... | 09/16/2003 |
| 6619021 | Combine hydraulic reel drive shunt A combine harvester hydraulic system having a valve which automatically routes hydraulic fluid from a combine fluid supply line to a combine fluid return line when the combine fluid supply line is not coupled to a hydraulic line of a harvesting assembly.... | 09/16/2003 |
| 6557332 | Control valve for switching a hydraulic piston-cylinder unit for purposes of driving an oscillatory machine part A self-propelled combine harvester having a mechanically actuated directional control valve for a hydraulic piston-cylinder unit used for driving the cutter bar in an oscillatory manner. A switching bracket is used to axially move the mechanically actuate... | 05/06/2003 |
| 6494025 | Device for remotely controlling a hydraulic system on a detachable implement A hydraulic system for a detachable implement such as draper platform for a combine utilizes a platform-mounted pump supplied with return oil from the existing reel drive motor. The system utilizes the existing combine hydraulic connection for the reel dr... | 12/17/2002 |
| 6405514 | Hydraulic drive system for turf maintenance equipment unit A turf maintenance equipment unit, such as a riding mower having two side cutting units and a front cutting unit operatively connected to a traction frame. A hydraulic traction system is provided for propelling the traction frame in forward and reverse. T... | 06/18/2002 |
| 6145287 | Hydrostatic circuit for harvesting machine The multiple pump apparatus includes first and second variable displacement closed circuit pumps. The multiple pump apparatus pressurizes fluid to be subsequently supplied to drive load devices. The first and second pumps each have fluid communication lin... | 11/14/2000 |
| 6089005 | Combined tow and pressure relief valve for a hydraulically self-propelled lawn mower A combination tow and pressure relief valve for use in a hydraulic fluid circuit used in a hydraulically driven wide area lawn mower. The valve includes a cylindrical valve body having a hexagonal head. A slideable valve tip with a shank and a valve head ... | 07/18/2000 |
| 5913802 | Single lever drivewheel steering power lawn mower The invention is a self-propelled drivewheel steering power mower which can be operated in a standing or sitting position, including a pair of variable flow hydrostatic pumps with tiltable swash plates, each of which drives one of a pair of drivewheels. A... | 06/22/1999 |
| 5911672 | Vacuum actuated control mechanism A riding lawn mower is provided that has an engine, a device that requires control and a vacuum actuated control mechanism for controlling the device. The vacuum actuated control mechanism includes a vacuum actuator having first and second chambers separa... | 06/15/1999 |
| 5901536 | Combined tow and pressure relief valve for a hydraulically self-propelled lawn mower A combination tow and pressure relief valve for use in a hydraulic fluid circuit used in a hydraulically driven wide area lawn mower. The valve includes a cylindrical valve body having a hexagonal head. A slideable valve tip with a shank and a valve head ... | 05/11/1999 |
| 5896731 | Slope equalizing arrangement for a harvesting machine A harvesting machine with a slope equalizing arrangement having a gearbox housing that is pivotally mounted to a pivot bearing. The gearbox housing having a sleeve that is pivotally received in a bushing formed in the pivot bearing. The gearbox housing is... | 04/27/1999 |
| 5822960 | Reel mower A reel mower having side reel mower units and a center reel mower unit connected to a vehicle body to be vertically movable between a lower position for a grass cutting operation and an upper position for a non-operational run. The side reel mower units a... | 10/20/1998 |
| 5791128 | Reversible hydraulic drive apparatus A hydraulic drive apparatus for example for driving the header of a combine harvester includes a pump, at least one motor driven by the pump, a reservoir in which the hydraulic fluid is cooled and degasified and a hydraulic circuit connecting the elements... | 08/11/1998 |
| 5651241 | Walk-behind mower controls with dual function control bracket A mechanical system for a controlling a reversible pump in a walk-behind turf care machine having a hydrostatic drive and operator speed and traction controls. The pump includes a rotatable trunion shaft connected to the traction control for controlling h... | 07/29/1997 |
| 5499491 | Cotton harvester Cotton harvester structure including centrally located, transversely mounted engine, rear mounted water and fuel tanks, and transversely centered conveyor fan having an upper, forwardly extending outlet located just below the level of the cab floor for im... | 03/19/1996 |
| 5462486 | Drive reversing system for the feeder housing of an combine harvester A reverser system for the feeder chain of a combine harvester comprises a hydraulic motor mounted on a slide and operated by a cylinder to move from a retracted position to a forward operating position. In the operating position the mechanical coupling co... | 10/31/1995 |
| 5231826 | Wing extension for windrow inverters A windrow inverter having a crop pick-up mechanism operable to elevate a windrow of crop material from the ground onto a transversely moveable draper conveyor is disclosed wherein a wing draper attachment mounted on the frame of the windrow inverter on th... | 08/03/1993 |
| 5191753 | Hydraulic drive system for a cotton harvester A hydraulic drive system for driving component parts such as harvesting units of a cotton harvester head assembly. The hydraulic drive system includes a source of actuating fluid and fluid pressure actuators for driving the harvesting units independently ... | 03/09/1993 |
| 5133174 | Hydraulically driven mowing unit A mower is propelled along the ground by a tractor and the mower includes three cutting units mounted on a frame. The three cutting units are transversely mounted on the frame to cut in overlapping parallel patterns with each cutting unit being free float... | 07/28/1992 |
| 5086613 | Check-relief valve for a hydraulic circuit A check-relief valve for use in a hydraulic circuit comprises a channel through a valve body which is divided by a central annular restriction into two portions. On each side of the restrictor is provided a valve seat which cooperates with a spherical bal... | 02/11/1992 |
| 4991382 | Lawn mower A lawn mower has a hydraulic motor mounted on each drive wheel and each motor is independently driven by a separate pump. Each pump includes a control lever for regulating fluid pressure and flow direction so that each wheel may be driven independently in... | 02/12/1991 |
| 4967543 | Lawn mower A lawn mower has a hydraulic motor mounted on each drive wheel and each motor is independently driven by a separate pump. Each pump includes a control lever for regulating fluid pressure and flow direction so that each wheel may be driven independently in... | 11/06/1990 |
