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Document Title |
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7142968 |
A method is provided for automatically determining a hitch raise rate calibration value for a hitch control system having a hydraulic actuator for moving the hitch, a valve for controlling flow of hydraulic fluid to the actuator and an e...
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6830110 |
A three-point hitch suitable for operation with wide implements is constructed by substituting a pair of flotation actuators for the usual drop links that are normally coupled between a pair of rocker arms and a pair of lower draft links...
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6612375 |
An apparatus and method for controlling variation in the pitch of an agricultural vehicle, where the apparatus includes a controller that controls a position of an implement attached to the agricultural vehicle, and a first valve that is...
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6442501 |
A method and apparatus for determining a velocity of an implement and thereby moving an implement to a desired position. A control system has input signals representative of the implement arm limit position, the implement arm actual posi...
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6058342 |
A system for controlling a function of a machine system including an off-road work vehicle, a moveable device, and a positioning assembly including an actuator for moving the device in response to a control signal. The system includes an...
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5784867 |
The present invention provides variable force traction enhance systems for vehicles. The systems include one or more hydraulic cylinders connected to an implement and fluidly connected to one or more hydrostatic transmissions. The hydrau...
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5684691 |
A control system for regulating the elevational position of an implement carried or trailed by a vehicle, such as a tractor, includes draft force sensors for detecting the draft force produced by interaction of the implement with the gro...
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5320186 |
In an automatic draft control system for positioning a hitch, velocity feedback loop techniques are employed to control the rate of movement of the hitch. When the system is operating in an open loop position control mode, a switch mount...
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5143159 |
A tractor-mounted three-point hitch for pulling a tillage implement is controlled by a closed loop including draft sensors for sensing the draft on the hitch and providing a draft feedback signal. An operator-controlled quadrant lever pr...
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5040119 |
Implement draft control devices are typically utilized on agricultural vehicles such as tractors and on other earthworking type vehicles. Advantageously, such control systems should respond quickly to changing soil conditions, while rema...
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4796712 |
A control system and method for adjusting the depth of a tractor-drawn draft implement in response to a detection of draft load. The control system compares actual engine rpm to a stored or mapped value of engine rpm at zero engine load ...
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3750762 |
A speed control system for a vehicle mounting a work performing device such as a trencher for controlling the speed of the vehicle inversely to the amount of work being performed by the work performing device. The vehicle includes a hydr...
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3716104 |
A tractor with a power operated implement lift and a hydraulically adjustable speed transmission. The driving speed of the tractor is detected and the load torque on the tractor is detected and the detected driving speed and torque value...
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3490538 |
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3375876 |
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3123146 |
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3013617 |
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2981342 |
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2914125 |
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2851938 |
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2777375 |
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2714346 |
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2679199 |
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2611307 |
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2611306 |
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2455727 |
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