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Class 172/10 - Sensitivity adjustment


Subclass of Class 172 - Earth working
Definition: Apparatus having means to selectively adjust the relationship
No. of patents: 23
Last issue date: 11/27/2007


NumberTitleIssue Date
7301541Programmable processor and method with wide operations
A programmable processor and method for improving the performance of processors by expanding at least two source operands, or a source and a result operand, to a width greater than the width of either the general purpose register or the data path width. The present ...
11/27/2007
7234172Glove with support for hyper-extension resistance
A hand glove for the participant of an active sport in which at least one of the participants fingers maybe subjected to hyper-extension from contact received from participating in that sport. The glove has respectively oppositely disposed palm and dorsal faces, a p...
06/26/2007
7104340Towed implement draft force sensor
A draft force sensor is provided for a coupling member coupled between a towing vehicle and a towed earth engaging implement, such as a scraper. The draft force sensor includes first and second bores extending through the coupling member. Each bore has a horizontal ...
09/12/2006
7073391Force sensor
A force sensor, in particular for detecting the forces on a vehicle seat, includes a force measurement cell (1) that has a Hall element. The force measurement cell (1) includes at least one bending bar (2, 3), which from the exertion of force to...
07/11/2006
7025148Vehicle with an attachment
The invention concerns a vehicle with an attachment, which has a lifting drive with at least one hydraulic cylinder and a control device, the control device having a position sensor and a position generator. It is endeavored to improve the position control of the at...
04/11/2006
6975930Rate limiting control system
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 assigned to a second input device th...
12/13/2005
6216072Hitch control system with adjustable slip response
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 a proportional sl...
04/10/2001
5113957Lifting control device for an agricultural machine
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 tilling depth setter...
05/19/1992
4979092Hitch control system
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 function thereof. Th...
12/18/1990
4907653Implement control system
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 hence the draft force...
03/13/1990
4903779Hydraulic control apparatus for tractor
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 position feedback a...
02/27/1990
4846283Engine-sensing draft control system with multiple feedback compensation mechanisms
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 automatic control syste...
07/11/1989
4837691Hitch control system with start-up lock-out
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 position....
06/06/1989
4796712Draft load control systems
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 conditions for the...
01/10/1989
4658908Electronic control system for a work implement
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 the performance of t...
04/21/1987
4571500Electric circuit for controlling a tractor-pulled mounted device adjustable in height by a hydraulic jack
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 predetermined maximum value i...
02/18/1986
4497375Force measuring apparatus mounted on tractor including Hall sensor detecting deformation of flex rod to control tractor power hoist
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 system is detected ...
02/05/1985
4411319Sensitivity adjusting apparatus for tractor draft sensing and control system
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 linkage having an i...
10/25/1983
4304303Three-point hitch draft control
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 an upper hitch ar...
12/08/1981
4300638Automatic position control apparatus for ground working vehicle
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 draft value of th...
11/17/1981
4185697Torsion bar draft load limit and preload adjuster
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 limit adjusting s...
01/29/1980
4173259Rear drive assembly with load sensing
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 vehicle weight or vehic...
11/06/1979
4064945Electronic depth control system
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 electronic control circuit...
12/27/1977
 
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