Combined smoke detection and furnace shut off device

Details Combined smoke detection and furnace shut off device Combined smoke detection and furnace shut off device

1977-09-01

1979-10-23

Dority, Jr., Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

By sensing of gas leakage, flashback or escaped flame

431 76, F23N 524

Patent

active

041719441

ABSTRACT:
A combined smoke detection and furnace shut-off device is provided having a smoke detection means which is disposable adjacent a furnace for detecting the presence of smoke unnaturally emitted from the furnace, a means for stopping ignition within the furnace, and means responsive to detection of the smoke by said smoke detection means for activating the ignition stopping means.

REFERENCES:
patent: 2727203 (1955-12-01), Zeitlin et al.
patent: 2843198 (1958-07-01), Beckett
patent: 3884133 (1975-05-01), Miller
patent: 3955186 (1976-05-01), Green et al.

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