Manual override for short stroke valve

Details Manual override for short stroke valve Manual override for short stroke valve

1979-11-05

1981-01-20

Schwadron, Martin P.

Fluid handling

Destructible or deformable element controlled

Destructible element

137 68R, 222 5, 222 80, 251 80, 251294, 169 11, F16K 1304, F16K 1306

Patent

active

042456606

ABSTRACT:
A dual valve actuator mechanism for a fire extinguisher bottle in a milit vehicle. The mechanism includes an electrical trigger system for operating the valve automatically in response to energization of an electronic optical fire sensor; alternately the electrical trigger system can be operated by closure of a manual switch from within the vehicle interior. A second cable system is provided to operate the valve manually from a point external to the vehicle, as when the vehicle is unoccupied at onset of the flame or when the soldiers are forced to exit the vehicle to avoid inhalation of fumes or vapors. Unfortunately the valve actuation stroke is very small, on the order of two-tenth inch or less. The present invention relates to a lost-motion connection in the cable for lengthening the stroke necessary to operate the valve; this prevents inadvertant valve actuation due to vehicle vibrations or installation tolerances.

REFERENCES:
patent: 1977288 (1934-10-01), Purdy
patent: 2415099 (1947-02-01), Hooper
patent: 3059814 (1962-10-01), Poncel et al.
patent: 3474809 (1969-10-01), Gorclon
patent: 3491783 (1970-01-01), Linsalato
patent: 3712319 (1973-01-01), Rhodes et al.
patent: 3983897 (1976-10-01), Gebelius

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