Fail safe liquid power device

Details Fail safe liquid power device Fail safe liquid power device

1976-12-08

1978-04-25

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Apparatus having means responsive to or ameliorating the...

60404, 60413, 60DIG2, F15B 1106

Patent

active

040855872

ABSTRACT:
A fluid power device such for example as one for opening and closing clam shell gates is operated by a ram under fluid pressure. A tank is provided for storing fluid under pressure and by a system of valving extension of the ram, as for a gate opening operation is inhibited until enough fluid under pressure is stored in the tank to assure completion of reverse operation of the ram to close the gates.

REFERENCES:
patent: 1948951 (1934-02-01), Walker
patent: 2392471 (1946-01-01), Fox
patent: 2641106 (1953-06-01), Jelinek
patent: 2900960 (1959-08-01), Gratzmuller
patent: 3225663 (1965-12-01), Pelisson
patent: 3533234 (1970-10-01), Futamata
patent: 3695023 (1972-10-01), Hayashi et al.

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