Motor vehicles – Having four wheels driven – With means for steering all driven wheels
Patent
1984-09-06
1986-01-28
Weakley, Harold W.
Motor vehicles
Having four wheels driven
With means for steering all driven wheels
180 142, 180 146, 180246, 180248, 180142, 180900, B60K 1730
Patent
active
045665532
ABSTRACT:
A four-wheel drive agricultural tractor with independently steered ground engaging wheels supporting a flat, extensible load supportive frame includes an operator's cab that is adapted to face the direction of travel. Mounted under the frame is an internal combustion engine, clutch, and transmission which are individually controllable from the cab. A system of shafts and gears couple motive power from the transmission to pairs of wheels and a system of hydraulic steering motors are controllable from the cab for effecting either coordinated or crab steering. Fabricated of box-girders, the frame includes fixed and slidable portions that are mutually displaceable by hydraulic rams located within the frame to vary the wheelbase and tread of the tractor. The frame also includes an articulated hinged member at each end carrying a hydraulic stabilizer. Both stabilizers are hydraulically interconnected and function to maintain all wheels on the ground while traversing uneven terrain and various novel mounting and locking arrangements are disclosed for attaching and carrying implements on and under the frame.
REFERENCES:
patent: 2228454 (1941-01-01), Hamilton
patent: 2634663 (1953-04-01), Curtis
patent: 3154164 (1964-10-01), Shaw
patent: 3197229 (1965-07-01), Houlton
patent: 3578096 (1971-05-01), Pearson
patent: 3830325 (1974-08-01), Tarter
patent: 4284159 (1981-08-01), Voelz
patent: 4289214 (1981-09-01), Spence
Sakovich Michael M.
Weakley Harold W.
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