Gas-powered alarm with pressure responsive remote indicator circ

Details Gas-powered alarm with pressure responsive remote indicator circ Gas-powered alarm with pressure responsive remote indicator circ

1974-04-05

1976-02-10

Swann, III, Glen R.

Communications: electrical

Systems

Call station

116 5, 116106, 340240, G08B 1702, G08B 1704

Patent

active

039381145

ABSTRACT:
The passage-way between a freon cylinder and a freon-powered horn is plugged by a eutectic metal plug. When sufficient heat loosens the plug, the horn is activated. A switch in the passageway senses the back pressure from the freon gas flow and activates a remote electrical indicator which can be used to determine which of a plurality of horns has been activated.

REFERENCES:
patent: 3014206 (1961-12-01), Slavin
patent: 3109409 (1963-11-01), Demay
patent: 3667419 (1972-06-01), Sullivan

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