...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 7301541 | Programmable 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 |
| 7234172 | Glove 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 |
| 7104340 | Towed 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 |
| 7073391 | Force 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 |
| 7025148 | Vehicle 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 |
| 6975930 | Rate 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 |
| 6216072 | Hitch 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 |
| 5113957 | Lifting 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 |
| 4979092 | Hitch 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 |
| 4907653 | Implement 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 |
| 4903779 | Hydraulic 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 |
| 4846283 | Engine-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 |
| 4837691 | Hitch 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 |
| 4796712 | Draft 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 |
| 4658908 | Electronic 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 |
| 4571500 | Electric 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 |
| 4497375 | Force 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 |
| 4411319 | Sensitivity 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 |
| 4304303 | Three-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 |
| 4300638 | Automatic 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 |
| 4185697 | Torsion 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 |
| 4173259 | Rear 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 |
| 4064945 | Electronic 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 |