Hydraulic motor control

Details Hydraulic motor control Hydraulic motor control

1978-06-08

1980-03-25

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Condition responsive control of motive fluid flow

60494, 60DIG2, 60493, F15B 908, F15B 914

Patent

active

041943651

ABSTRACT:
A control system for stopping a hydraulic motor in a predetermined position comprises a valve connected in parallel across the motor, the valve having a closed position and an open position in which flow is via a throttle orifice. When the motor is being driven normally the valve is closed. When the main control regulator for the motor is moved to stop the motor, the valve is automatically opened to allow limited fluid flow through the motor during a slowing down phase. A detector senses when the motor is a predetermined distance from its desired stopping position, and moves the valve to its closed position. Overload valves are provided to prevent overpressures.

REFERENCES:
patent: 3369360 (1968-02-01), DeBiasi
patent: 3672168 (1972-06-01), Salmon
patent: 3964262 (1976-06-01), Patton

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