Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 5333479 | Adaptive engine output mode setting method based on shoe slip The present invention relates to a method for controlling a power output of an engine of a crawler vehicle; such as, large sized bulldozers, at a time when shoe slip of such crawler vehicle occurs in operation, the crawler vehicle being provided with work... | 08/02/1994 |
| 5297649 | Apparatus for controlling output from engine on crawler type tractor At the time of starting movement as well as at the time when a crawler type tractor, e.g., a bulldozer for performing a dosing operation and a ripping operation is held in a three-point grounding state, an output from an engine (10) is automatically reduc... | 03/29/1994 |
| 5074373 | Drive connection on a support vehicle A drive connection on a support vehicle for interchangeable hydraulic attachments to be coupled to the support vehicle includes an electronic control apparatus and a plurality of circuit elements connected thereto and actuated when the attachment is mecha... | 12/24/1991 |
| 5012415 | Control system calibration A microprocessor-based control system includes an automatic calibration and configuration feature. A calibration and configuration algorithm operates to establish the sensor ranges of all sensors installed and disables certain configurable features if the... | 04/30/1991 |
| 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 |
| 4931967 | Control system calibration A microprocessor-based control system includes an automatic calibration and configuration feature. A calibration and configuration algorithm operates to establish the sensor ranges of all sensors installed and disables certain configurable features if the... | 06/05/1990 |
| 4878543 | Method for controlling an attachment to agricultural tractors A method of controlling an attachment to an agricultural tractor in which the absolute movement of the attachment is determined by a motion sensor mounted thereon and is utilized as a control standard while the relative motion of the attachment with respe... | 11/07/1989 |
| 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 |
| 4740778 | Apparatus for detecting a failed resolver In the field of automated guided vehicles it is particularly important that speed and steering angle feedbacks be accurate and reliable. Any deviations in these feedback signals should be promptly detected and used to alter operation of the vehicle. An ap... | 04/26/1988 |
| 4657087 | Vehicle control system including vehicle with steering and elevation control relative to a filament In a particular species of the preferred embodiment, the invention contemplates a land traveller such as a farm tractor pulling a passive load such as a plough, disc or the like. A control device for directing or controlling the path of travel of the vehi... | 04/14/1987 |
| 4612996 | Robotic agricultural system with tractor supported on tracks A robotic tractor that travels on rails forming a grid over a crop field and automatically performs tasks in the field is described. The tractor is supported on extendable legs that carry dual tandem perpendicular wheel sets. A rotary implement bed suppor... | 09/23/1986 |
| 4582141 | Motor vehicle with driving speed responsive to change in attachment load A motor vehicle, preferably with a fuel injection engine, has a coupling, such as a multi-point hitch, connectable to an attachment. One or more of the hitch's arms are pivotable about a connection to the vehicle, and when the attachment is pushed, pulled... | 04/15/1986 |
| 4558760 | Apparatus for automatically guiding the movement of a vehicle, especially an off-road vehicle The apparatus is of the kind comprising detectors (21,23) of deviation of vehicle positional parameters from a path which is fixed in advance providing electrical data which actuates a control device (14) connected to a steering device (7) for steering th... | 12/17/1985 |
| 4549610 | Vehicle with front and rear steerable wheels individually driven by hydraulic motors An agricultural tractor having six wheels which are each hydraulically drivable by individual hydraulic motors through hydraulic fluid supplied by respective hydraulic pumps. With each pump driving only one wheel, skidding of a wheel does not affect drive... | 10/29/1985 |
| 4518045 | Vehicle with coolant pressure responsive hitch control An engine driven agricultural tractor has a hitch control system with an actuator which is responsive to a differential coolant pressure across the engine driven coolant pump.... | 05/21/1985 |
| 4518044 | Vehicle with control system for raising and lowering implement A tractor includes a hitch for pulling a ground-engaging implement. A hydraulic cylinder is extendable and retractable to lower and raise the implement. A control system senses operating parameters, including wheel slip, engine speed, draft force and impl... | 05/21/1985 |
| 4515221 | Tractor having guidance system An agricultural tractor having two longitudinally aligned back wheels on each side receiving an endless track of the "caterpillar" type and steerable front wheels which are controlled automatically by a predetermined line of travel whereby the tractor is ... | 05/07/1985 |
| 4503916 | Hybrid hitch control system A conventional non-electrical draft/position responsive hitch control system is modified to respond to an electrical control signal derived from sensed engine droop and wheel slip.... | 03/12/1985 |
| 4482960 | Robot tractors Disclosed is an electro-optical and microcomputer based method and apparatus for automatically guiding tractors and other farm machinery for the purpose of automatic crop planting, tending and harvesting. Also disclosed are means for automatic picking, ex... | 11/13/1984 |
| 4454919 | Agricultural tractor-trailer slippage recognition system and method To prevent a tractor pulling a plow (P) from digging itself in, if the plow position, with respect to soil or tractor level, is controlled by an automatic control system which causes the plow to be lowered if the pulling force of the tractor decreases, sl... | 06/19/1984 |
| 4440091 | Guideway control apparatus An apparatus for automatically controlling the operation of a non-track machine, such as a tractor used in plowing, fertilizing or mowing, may incorporate a guideway which limits the repetitive closed loop elongate path through which such a slave tractor ... | 04/03/1984 |
| 4423785 | Load control device for a working tool of a construction vehicle A load control device for a working tool of a construction vehicle in which a signal detected by a speed detector or a traction force detector is fed back to produce a deviation signal between said signal and a desired signal. A memory unit has stored a d... | 01/03/1984 |
| 4373603 | Automatic crab steering A steering control system for automatically positioning the drive wheels of a tractor for crab steering in response to implement side draft. The steering system includes a conventional control device that produces output signals that are a function of the... | 02/15/1983 |
| 4344499 | Tractor with anti-slipping and overloading controls A tractor has an engine, a torque converter, a lifting device for attachment to an implement such as a plow, the torque converter being controlled automatically whereby if an engine-driven ground wheel starts slipping, the torque converter reduces the tra... | 08/17/1982 |
| 4343513 | Method and power transmission system for operating a road planar machine The method and power transmission system of this invention for driving a road planar machine has the cutter unit in a positive mechanical drive with the drive shaft of a machine power unit through a hydraulically actuated clutch mechanism. The wheel tract... | 08/10/1982 |
| 4328719 | Micromotion multiplier Apparatus (19) for sensing forces (29) such as in a power transmission apparatus (10) and magnifying the sensed forces suitably to provide an output (28) such as for use in controlling associated equipment (12, 18) to limit the forces. The sensing apparat... | 05/11/1982 |
| 4277898 | Hydraulic control system for excavating machine A hydraulic control system is disclosed for a hydrostatically operated earth-working machine which automatically adjusts the travel speed of the machine in response to the load conditions being encountered by an attached powered implement. The system incl... | 07/14/1981 |
| 4192088 | Lump peat machine A lump peat machine mills peat by means of a rotating cutter which delivers the peat to a tube containing a screw conveyor for expression through a nozzle onto the ground. The cutter is raised and lowered through means of a hollow arm supporting the cutte... | 03/11/1980 |
| 4173836 | Condition responsive trench excavator A trench excavator has a raisable and lowerable boom swingable about a vertical axis on the self-propelled chassis which is mounted on tracks. The boom carries a cutting head which is swingable about a horizontal axis at the free end of the boom so that t... | 11/13/1979 |
| 4160485 | Tractor with draft load control system A tractor draft load monitoring system responsive to tractor and associated implement load changes. The system is particularly adapted for a tractor having an engine/transmission power unit coupled to its drive shaft. The power unit is mounted on the fram... | 07/10/1979 |
| 4140193 | Automatic steering for construction machines Automatic control means for the coordinated steering of front and rear pairs of individually steerable ground engagement means supporting a construction machine are disclosed wherein signals from front and rear steering sensors following a grade reference... | 02/20/1979 |
| 4125166 | Control system and method for loading of engine driven apparatus A control system and method for loading an engine driven apparatus such as an engine driven tractor having a plough the depth of which can be regulated by a suitable control system. The engine has a fuel injection pump which includes a maximum fuel feed l... | 11/14/1978 |
| 4077475 | Tractor type vehicle including engine and load control therefor and provided with rotary working implement Load control for engine of vehicle for agricultural work with rotary working implement, for avoiding too much deviation of the working depth while preventing the engine from stopping under heavy overloading. The rotary working implement is automatically r... | 03/07/1978 |
| 4037544 | Agricultural machine A self-propelled agricultural machine which includes a vehicle capable of automonously advancing when driven, and an assembly of implements capable of processing the soil during advancement of the vehicle. The machine includes a primary source of mechanic... | 07/26/1977 |
| 4023622 | Tractor with draft load control A hydrostatic drive tractor having a hydraulically lowerable and raisable hitch to lower and raise an associated implement to respectively increase or decrease draft load includes a draft control system sensing increases and decreases in the hydrostatic d... | 05/17/1977 |
| 3979915 | Power plant for a crawler vehicle The power plant of a crawler vehicle is a gas turbine having at least two turbine rotors interconnected by a variable transmission. One of the rotors is primarily intended for driving the tracks while the other rotor is intended primarily for auxiliary pu... | 09/14/1976 |
