Safe gas valve

Details Safe gas valve Safe gas valve

1992-02-05

1993-03-16

Hepperle, Stephen M.

Combustion

Timer, programmer, retarder or condition responsive control

Sensor of first burner controls second burner, e.g., pilot...

137 66, 251 68, 431 57, 431 84, F23Q 912

Patent

active

051939932

ABSTRACT:
A gas valve having a main valve closure member whose position is controlled both by a pivoting lever arrangement and a thermostatically controlled solenoid. The closure member is biased toward the lever by a spring between the closure member and the lever, and the lever is biased to position the closure member against a stationary valve seat. The lever is pivotable against its bias by a mechanical latch arrangement which forms part of a manual control, whereby when the lever is pivoted against its bias, the thermostatically controlled solenoid is permitted to engage the closure member, and, in the absence of demand from the thermostat, to move the closure member toward the valve seat against the bias of the spring between the closure member and lever.

REFERENCES:
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patent: 3021857 (1962-02-01), Davidson
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patent: 3354490 (1967-11-01), Dietiker et al.
patent: 3602239 (1971-08-01), Battersby
patent: 3763875 (1973-10-01), Mobus et al.
patent: 3973576 (1976-08-01), Dietiker et al.
patent: 3999932 (1976-12-01), Matthews
patent: 4442853 (1984-04-01), Gort
patent: 4543974 (1985-10-01), Dietiker et al.
patent: 4549571 (1985-10-01), Kelly
patent: 4729396 (1988-03-01), Kelly et al.

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