Automatic control for hydraulic power transmission

Details Automatic control for hydraulic power transmission Automatic control for hydraulic power transmission

1975-09-02

1976-12-14

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Condition responsive control of pump or motor displacement

60450, 60493, 417212, F16H 3946

Patent

active

039967441

ABSTRACT:
An automatic control for reducing a flow pressure compensated variable displacement pump to a standby condition while the pump operated motor is lowering a heavy static load. The pressure in the motor exhaust line caused by the static load actuates the control to cut-off pressure to the downstream sensing line of the pump flow control. A bleed orifice in that downstream sensing line depressurizes the line causing the pump displacement servo to stroke back the displacement of the pump to a standby condition.

REFERENCES:
patent: 3486334 (1969-12-01), Miller
patent: 3508847 (1970-04-01), Martin

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