Multi-functional valve

Details Multi-functional valve Multi-functional valve

1995-04-25

1996-11-12

Nguyen, Hoang

Motors: expansible chamber type

Differential

Motive fluid constantly applied to one working member face

91446, 91448, 91392, F15B 1517, F15B 1108

Patent

active

055729185

ABSTRACT:
A hydraulic system having a high-pressure differential cylinder implemented as a servo actuator is hydraulically connected to a valve combination and an electro-hydraulic servo valve. The valve combination is a multi-functional valve including multiple interengaging valves and correcting elements all disposed within a housing. The valves and correcting elements are positioned and engaged along a functional axis of the multi-functional valve. This combination of valves provides for a single lightweight housing for the valve. The multi-functional valve is hydraulically connected via conduits with the servo valve and the differential cylinder. This device allows for the use of a single valve arrangement for controlling the numerous operating modes of the differential cylinder or servo actuator.

REFERENCES:
patent: 2966139 (1960-12-01), Appel
patent: 3053234 (1962-09-01), Chevreux
patent: 4700612 (1987-10-01), Pfister
patent: 4768420 (1988-09-01), Korthaus
patent: 4958548 (1990-09-01), Schulze

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