Pilot-controlled directional valve

Details Pilot-controlled directional valve Pilot-controlled directional valve

1989-11-22

1992-06-02

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

1376256, F15B 13043

Patent

active

051178680

ABSTRACT:
Pilot-controlled directional valve having two positions, an admitting position and a closing position for a hydraulic user device, such closing position can be obtained independently from the presence of a supplied hydraulic pressure.

REFERENCES:
patent: 2913005 (1959-11-01), Grant et al.
patent: 2977984 (1961-04-01), Barnes
patent: 2997064 (1961-08-01), Gerwig et al.
patent: 3265089 (1966-08-01), Nill
patent: 4567914 (1986-02-01), Coppola et al.

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