Hydraulic load-sensing system

Details Hydraulic load-sensing system Hydraulic load-sensing system

1976-04-09

1977-03-08

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Condition responsive control of motive fluid flow

60468, F16D 3100, F15B 1518

Patent

active

040106101

ABSTRACT:
A hydraulic load-sensing system including a pump, a valve, a load-responsive actuator, and a hydraulic pressure unloading valve, all hydraulically connected together. The outlet of the pump is directed to both valves, and a sensing port and hydraulic line exist between the two valves for communicating the hydraulic load pressure to the unloading valve and thereby establishing the pump outlet pressure. A biasing member is included in the unloading valve, and therefore a constant hydraulic pressure drop is established across the valve supplying fluid to the load-responsive actuator, and a pressure relief valve limits the outlet pressure of the pump.

REFERENCES:
patent: 1972462 (1934-09-01), Schafer
patent: 3568868 (1971-03-01), Chichester

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