Closing device with valve having a high speed reaction

Details Closing device with valve having a high speed reaction Closing device with valve having a high speed reaction

1977-11-21

1980-06-17

Schwadron, Martin P.

Valves and valve actuation

Biased trip

Electrical trip actuation

1373846, 1373848, F16K 3144, F16K 3500

Patent

active

042080320

ABSTRACT:
A closing device with a valve having a high speed reaction. A dome shaped valve is forced open by applying pressure to a piston which is attached to the dome. The opening pressure is provided by an electromagnetic jack and is transmitted through a lock which has a releasing threshhold. The displacement of the piston biases a return spring into a compressed state. Force applied to the lock by a solenoid counteracts the force of the return spring so as to keep the lock locked and thus keep the dome open. When enough force is applied to the dome so as to overcome the threshhold of the lock, or if the lock is intentionally released, the piston is freed and the return spring quickly forces the dome to a closed position.

REFERENCES:
patent: 998507 (1911-07-01), Hasty
patent: 1183815 (1916-05-01), Hasty
patent: 1372063 (1921-03-01), Carruth
patent: 2276195 (1942-03-01), Holmes
patent: 3082627 (1963-03-01), Yeo et al.
patent: 3315939 (1967-04-01), Boone et al.
patent: 3685791 (1972-08-01), Czuszak et al.
patent: 3802459 (1974-04-01), Geraudie

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