Automatic fireplace damper

Details Automatic fireplace damper Automatic fireplace damper

1978-04-24

1981-06-16

Scott, Samuel

Stoves and furnaces

Dampers

Electric

110163, 431 20, F23L 100, F23N 300

Patent

active

042730970

ABSTRACT:
This device provides a means of automatically detecting smoke in a room, through an ionization chamber, prior to it being noticed by humans. It consists primarily of an automatic control unit, which through a small servomotor will open the fireplace damper in step fashion, or close it to conserve heat. It further includes a manual over-ride switch for use when desired.

REFERENCES:
patent: 3773028 (1973-11-01), Schreibeis
patent: 3951051 (1976-04-01), Dry

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