Chimney fire detector

Details Chimney fire detector Chimney fire detector

1980-01-28

1982-02-09

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

340584, G08B 1706

Patent

active

043152562

ABSTRACT:
A chimney fire detector has a pair of entwined conductors mounted at the outlet of the chimney. A sensing device can detect electrical contact between these conductors. An insulating spacer is mounted between these conductors for separating them. This spacer is formed of material which allows the conductors to pass through the material and touch in response to temperatures in excess of a predetermined magnitude. This predetermined magnitude corresponds to the temperature at the outlet of the chimney during a chimney fire.

REFERENCES:
patent: 1973272 (1934-09-01), Sremec
patent: 2185944 (1940-01-01), Holmes
patent: 2518789 (1950-08-01), Jackson
patent: 3046536 (1962-07-01), Sciuto
patent: 3257530 (1966-06-01), Davies
patent: 3721956 (1973-03-01), Hamann et al.
patent: 3774184 (1973-11-01), Scarelli

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