Hydraulic control system for variable displacement pump

Details Hydraulic control system for variable displacement pump Hydraulic control system for variable displacement pump

1979-09-24

1981-02-03

Croyle, Carlton R.

Pumps

Condition responsive control of drive transmission or pump...

Plural pumps with individual or relative control

60447, 60486, F04B 4900

Patent

active

042485738

ABSTRACT:
A hydraulic control system for a variable displacement pump, comprising a prime mover for driving the variable displacement pump, a fixed displacement pilot pump driven by the common prime mover, a pressure compensating valve connected to the pilot pump and the variable displacement pump, a cut-off control valve connected to the pressure compensating valve and the variable displacement pump, and a servo booster connected to the cut-off control valve and the pilot pump for controlling the displacement of the variable displacement pump.

REFERENCES:
patent: 3732036 (1973-05-01), Busbey et al.
patent: 3738779 (1973-06-01), Hein et al.
patent: 3841795 (1974-10-01), Ferre et al.
patent: 3935706 (1976-02-01), Stevens
patent: 4065228 (1977-12-01), McMillan
patent: 4203712 (1980-05-01), Uehara

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