Hydraulic drive system for a vehicle

Details Hydraulic drive system for a vehicle Hydraulic drive system for a vehicle

1980-12-10

1983-09-06

Rosenthal, Arnold

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

60484, 60486, 60443, 180307, 180308, F16D 3102

Patent

active

044021810

ABSTRACT:
A hydrostatic drive system having a closed loop front wheel drive circuit and a closed loop rear wheel drive circuit. A variable displacement pump in each of the circuits is cammed to vary the displacement delivered to dual displacement wheel motors to provide two speed ranges for the drive system. A servosystem uses hydraulic fluid to cam the displacement of the variable displacement pump and a hydraulic control to selectively engage each of the drive ranges.

REFERENCES:
patent: 3583512 (1971-06-01), Praddaude
patent: 3750406 (1973-08-01), Verlinde et al.
patent: 3952511 (1976-04-01), Turner et al.
patent: 3981374 (1976-09-01), Johns, Jr.
patent: 4015679 (1977-04-01), Klitz

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