Motor vehicles – Power – Including traction motor of kind driven by noncompressible...
Patent
1983-09-09
1985-11-26
Peters, Jr., Joseph F.
Motor vehicles
Power
Including traction motor of kind driven by noncompressible...
60451, B60K 2600
Patent
active
045549923
ABSTRACT:
A hydrostatically operated vehicle, such as a street sweeper, includes an engine driven reversible hydrostatic pump coupled to a single hydrostatic pump driving wheels of the vehicle. The pump is shiftable from neutral to reverse and forward, low and high speed positions, and the hydrostatic motor is controlled between low and high speed positions with a metering valve automatically adjusting the motor speed in response to variation in reaction torque between the drive wheels and the ground. The vehicle also includes a reversible hydrostatic component drive system for powering motors which drive an elevator, pick-up broom and two gutter brooms in a forward working direction and which may be reversed for clearing debris jams by reversing the pump. The component drive system includes valve means for selectively driving the gutter brooms and for holding the gutter brooms inactive when the pump is driven in reverse.
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Dukes Mark C.
FMC Corporation
Megley R. B.
Moore A. J.
Peters Jr. Joseph F.
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