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6975930 |
A method of controlling an operation of a mechanism is provided. A first rate limit is assigned to a first input device that is operable to generate a first signal to control the operation of the mechanism. A second rate limit is assigne...
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6216072 |
A vehicle/implement hitch control system is responsive to a wheel slip signal indicative of the slippage of the driven wheels of the vehicle. The control system generates an integrated slip signal using an integration function, generates...
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5113957 |
A control device controls the draft for moving the working machine, such as a plow, up or down. The working machine is mounted on a tractor by way of a hydraulic lifting device which is adjusted to the tilling depth predetermined by a ti...
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4979092 |
A hitch control system includes a draft force sensor, a hitch position sensor, an operator command lever, an upper hitch position limit setter, a mixer setter, a drop rate setter and a control unit which generates control signals as a fu...
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4907653 |
A tractor implement draft force control system in which desired and actual implement draft force values are compared to provide a draft force error signal. The system is responsive to the error signal to control the working depth and hen...
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4903779 |
A hydraulic control apparatus for a tractor comprising a control valve for a hydraulic unit for a work device, a position control lever and a draft control lever for changing over the valve through position and draft link assemblies, a p...
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4846283 |
An automatic feedback control system for use with an off-road vehicle having an adjustable-elevation, ground-engaging implement, such as an agricultural tractor with a three-point hitch and a plough or cultivator, is disclosed. The autom...
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4837691 |
A hitch control system includes an algorithm which prevents undesired and/or unexpected hitch movement upon start-up of the control system, depending upon the actual hitch position, the commanded hitch position and an operator set limit ...
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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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4658908 |
A tractor control system has a work implement, an actuator for the work implement, an electronic circuit utilizing an analog/digital technique and including an analog/digital control unit and a device for measuring a factor dominating th...
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4571500 |
The position control and force control of a device mounted to a tractor, in particular for controlling the depth penetration of a plough, is supplemented by a lowering speed-responsive control to limit the lowering speed to a predetermin...
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4497375 |
A force measuring procedure and a force measuring apparatus are used to control the power hoist of an agricultural tractor. The force measuring procedure operates in such a manner that the relative displacement of a point on an elastic s...
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4411319 |
An apparatus for varying the sensitivity of a tractor draft sensing and control system of the type including a draft sensing mechanism having an output link shiftable along its length in response to changes in draft and a draft control l...
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4304303 |
The draft control consists of a three-point hitch mechanism which automatically raises or lowers the hitched implement so that a predetermined draft load can be maintained. An increase or decrease draft load on the implement is sensed by...
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4300638 |
An automatic position control apparatus for a ground working vehicle equipped with a liftable working implement. The control apparatus is adapted to automatically control lifting and lowering of the implement so that the deviation of the...
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4185697 |
A draft load sensing mechanism for a vehicle having a torsion bar carrying the draft load from the lower draft arms which produce a torsion load on the bar. A preload adjusting screw applies a preload torque to the torsion bar and a load...
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4173259 |
A load-sensing device for sensing strain on the rear drive housing responsive to draft loads on the vehicle for generating a signal for controlling the raising and lowering of an implement through a hydraulic system of distributing vehic...
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4064945 |
An electronic control system for controlling the depth of a vehicle drawn implement as a function of a plurality of sensed variables including a plurality of transducers one for sensing the value of each of the variables, and an electron...
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3731746 |
An electrically controlled hydraulic cylinder having a variable resistor and a bridge circuit for preselecting the desired length of a remote hydraulic cylinder in the hydraulic system of a tractor.
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3722598 |
A draft load sensing mechanism for a vehicle having a torsion bar with means for presetting the minimum draft load and load range sensed by the draft load sensing mechanism.
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3653446 |
The disclosure pertains to an agricultural tractor having a draft and position responsive hitch control for maintaining an implement at a constant working depth in spite of varying working conditions. The hitch is activated by a power cy...
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3627056 |
This plow implement is made with a main frame and two plow-carrying subframes which are mounted for lateral swinging movement below the main frame. An eccentric arrangement between the two subframes laterally vibrates the subframes equal...
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3593804 |
A portable power operated cultivating and digging machine preferably incorporating a gasoline engine as the prime mover. The engine drives a pulley and belt assembly which in turn drives a sprocket. An endless chain and second sprocket a...
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3593803 |
A gardener's glove formed of a thin, flexible tough material having finger members and an elongated sleeve. Tool elements are associated with one or more finger members and may be formed integral therewith or otherwise secured thereto. T...
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3589447 |
A position- and load-sensing mechanism which is capable of automatically maintaining a tool pivotally supported on a vehicle in either a predetermined position with respect to the vehicle and/or a predetermined load on the tool. The load...
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3412811 |
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3405766 |
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3294179 |
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3275085 |
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3269464 |
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3246702 |
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3246700 |
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3239013 |
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3235010 |
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3049179 |
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3022832 |
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3014535 |
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2998851 |
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2964113 |
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2924285 |
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2921638 |
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2920705 |
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2914125 |
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2900030 |
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2851938 |
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2822737 |
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2790364 |
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2786403 |
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2786402 |
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2777375 |
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