Hydraulic motor control

Details Hydraulic motor control Hydraulic motor control

1981-08-20

1984-10-23

Hart, Douglas

Power plants

Pressure fluid source and motor

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

60450, 60452, F16H 3946

Patent

active

044780419

ABSTRACT:
A control for a variable displacement motor and operable in either direction of rotation of the motor (10) and which acts on a servo cylinder (55) to set the position of a wash plate (50). The control includes a signal-setting valve (65) operable in response to the rate of fluid flow through the motor by sensing a pressure drop in a closed circuit line to the motor to set a variable control signal and the variable control signal is applied to the displacement-setting mechanism (56,55) for the motor to have a decrease in motor displacement related to an increase in the rate of fluid flow through the motor.

REFERENCES:
patent: 2056896 (1936-10-01), Douglas
patent: 3186170 (1965-06-01), Gauthier
patent: 3246465 (1966-04-01), Bookout et al.
patent: 3285000 (1966-11-01), Christenson et al.
patent: 3354978 (1967-11-01), Budzich
patent: 3924410 (1975-12-01), Cornell
patent: 3986357 (1976-10-01), Hoffman
patent: 4129987 (1978-12-01), Blume

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