Vehicle drive unit utilizing hydraulic pump and motor

Details Vehicle drive unit utilizing hydraulic pump and motor Vehicle drive unit utilizing hydraulic pump and motor

1975-12-30

1977-02-01

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Condition responsive control of or by input to input pump...

60468, 60487, F16H 3946

Patent

active

040055779

ABSTRACT:
A vehicle drive system utilizing an engine controlled to operate at a substantially constant speed during vehicle operation. Means are provided to vary that engine speed in accordance with different types of operation. The engine powers an hydraulic pump, the output flow from which is varied to determine the vehicle speed. An hydraulic motor receiving fluid from the pump is driven thereby and is coupled to the drive shaft of the vehicle.

REFERENCES:
patent: 2232428 (1941-02-01), Benedek
patent: 2976685 (1961-03-01), Thoma et al.
patent: 3135087 (1964-06-01), Ebert
patent: 3180080 (1965-04-01), Budzich et al.
patent: 3451218 (1969-06-01), Grant

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