Multiple valve control device

Details Multiple valve control device Multiple valve control device

1977-05-18

1979-05-22

Schwadron, Martin P.

Fluid handling

Systems

Supply and exhaust

137549, 91170MP, F15B 1108, E03B 310, F16K 100, F15B 1116

Patent

active

041553756

ABSTRACT:
A multiple valve control device for use with a hydraulic walking mine-roof support frame, comprising a valve housing containing control valves which are disposed concentrically to a central axis around a central filter into which an axially-extending control-medium feed duct enters and from which radial bores extend in a star pattern towards the control valves, the said control valves, which are provided with valve pistons, being actuated via operating members from the valve-housing endface which is provided with a cover.

REFERENCES:
patent: 2258295 (1941-10-01), Merz
patent: 2609207 (1952-09-01), Sickle
patent: 3019816 (1962-02-01), Larsen et al.
patent: 3272084 (1966-09-01), Bolton et al.
patent: 3520327 (1970-07-01), Claydon et al.
patent: 3906994 (1975-09-01), Schon

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