Regulated pressure supply for a variable-displacement...

Details Regulated pressure supply for a variable-displacement... Regulated pressure supply for a variable-displacement...

2005-08-02

2005-08-02

Lopez, F. Daniel (Department: 3745)

Power plants

Pressure fluid source and motor

Condition responsive control of motive fluid flow

C060S489000

Reexamination Certificate

active

06922991

ABSTRACT:
A pressure-control device (20) includes a controllable variable-displacement reversible hydraulic motor (21) having a pressure port (22) and a return port (23); a source of pressurized fluid (Ps); a fluid return (R); and a pressure regulating valve (24) operatively interposed between the source, return and pressure port. The pressure regulating valve is operatively arranged to maintain a predetermined pressure at the pressure port regardless of the direction of flow through the pressure port.

REFERENCES:
patent: 3625007 (1971-12-01), Herndon
patent: 4768340 (1988-09-01), Hamilton
patent: 5590525 (1997-01-01), Kandil
patent: 5992148 (1999-11-01), Satake

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