Apparatus for adjusting the working fluid pressure

Details Apparatus for adjusting the working fluid pressure Apparatus for adjusting the working fluid pressure

1992-12-07

1994-08-02

Look, Edward K.

Power plants

Pressure fluid source and motor

Condition responsive control of motive fluid flow

91517, 91459, 91461, F16D 3102

Patent

active

053334507

ABSTRACT:
An apparatus for adjusting the pressure of working fluid provided to the load or user via a hydraulically actuatable control valve is provided. The apparatus includes a comparator that compares a given or desired control pressure for the control valve with the predominant present load pressure. The resulting pressure differential is used to re-adjust the control valve or to re-adjust a pressure compensator positioned upstream of the control valve with respect to the direction of the flow of working fluid flowing to the user.

REFERENCES:
patent: 3927603 (1975-12-01), Bernhoft
patent: 4508013 (1985-04-01), Barbagli
patent: 4708596 (1987-11-01), Palm et al.
patent: 4718329 (1988-01-01), Nakajima et al.
patent: 4845948 (1989-07-01), Tha et al.
patent: 4938023 (1990-07-01), Yoshino
"o+p-olhydraulik und pneumatik", vol. 29 (1985), No. 2, pp. 80-84.

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