Load responsive fluid control system

Details Load responsive fluid control system Load responsive fluid control system

1977-02-23

1978-02-28

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Condition responsive control of pump or motor displacement

60459, 60484, 13759613, F16H 3946

Patent

active

040758427

ABSTRACT:
A load responsive fluid power multiple load control system using load responsive direction and flow control valves in combination with pump control responding to highest system load. Each direction flow control valve is equipped with a load responsive positive load control which automatically regulates valve inlet pressure to maintain a relatively constant pressure differential between pump inlet pressure and load pressure at a first level and a load responsive negative load control which automatically regulates valve inlet pressure to maintain a relatively constant pressure differential between pump inlet pressure and load pressure at a second higher level. The load responsive control of each direction control valve blocks the pump flow to the motor while controlling negative load, providing the motor inlet with fluid from the motor exhaust.

REFERENCES:
patent: 3398650 (1968-08-01), Garnjost
patent: 3455210 (1969-07-01), Allen
patent: 3470694 (1969-10-01), Budzich
patent: 3488953 (1970-01-01), Haussler
patent: 3744517 (1973-07-01), Budzich
patent: 3807447 (1974-04-01), Masuda
patent: 3882896 (1975-05-01), Budzich

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