Heat responsive valve

Details Heat responsive valve Heat responsive valve

1984-02-23

1985-10-29

Jones, Larry

Valves and valve actuation

With means for blocking or disabling actuator

Latch manipulator mounted on valve body

251902, 137522, 137457, 137468, 138 89, F16K 3500, F16K 1738

Patent

active

045497176

ABSTRACT:
A safety valve responding to overheating conditions of the surrounding atmosphere, more specifically a combustion gas inlet valve that closes when a fire declares. The valve uses a shape-memory element for detection and command. For the latter function it must be inside the valve, at the expense of sufficiently rapid detection of external temperature. This problem is solved by using a shape-memory element that is in close contact with the valve housing, e.g. countersunk in a groove in the internal wall of the valve housing, for facilitating conduction heat transfer.

REFERENCES:
patent: 1708622 (1929-04-01), Hoffman
patent: 1848031 (1932-03-01), Spencer
patent: 2048387 (1936-07-01), Johnsen
patent: 3106226 (1963-10-01), Machen
patent: 3367362 (1968-02-01), Hoffman
patent: 3417768 (1968-12-01), Wasson
patent: 3431944 (1969-11-01), Sakuma
patent: 4227646 (1980-10-01), Hart et al.
patent: 4229341 (1980-10-01), Yamaguchi et al.
patent: 4350183 (1982-09-01), Holmes

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