Control devices for hydrostatic transmissions

Details Control devices for hydrostatic transmissions Control devices for hydrostatic transmissions

1975-11-17

1977-05-31

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Servo-motor having externally operated control valve sets...

60486, 60488, 60492, F16H 3946

Patent

active

040261085

ABSTRACT:
A hydrostatic transmission is provided with a variable capacity pump and a variable capacity motor. A control is operable to operate sequentially the pump and motor. A second control is provided to operate on the pump to override the signal to the pump from the first control without altering the setting of the motor. The first control thus acts as a ratio selector and the second control as a clutch.

REFERENCES:
patent: 2161439 (1939-06-01), Thoma
patent: 3126707 (1964-03-01), Hann et al.
patent: 3230699 (1966-01-01), Hann et al.
patent: 3371479 (1968-03-01), Yapp et al.
patent: 3561212 (1971-02-01), Pinkerton et al.

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