Light-scattering type smoke detector

Details Light-scattering type smoke detector Light-scattering type smoke detector

1985-07-11

1987-02-10

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

250574, 356439, G08B 1710

Patent

active

046426159

ABSTRACT:
In the light-scattering type smoke detector with a disorder detecting circuit, the Munsell value of lightness of the inside surface of the dark chamber is raised to 2-4. Thereby, not only disorder of the apparatus but also performance drop of apparatus parts can be detected.

REFERENCES:
patent: 3383670 (1968-05-01), Roberts
patent: 3409885 (1968-11-01), Hall
patent: 4166698 (1979-09-01), Steele
patent: 4242673 (1980-12-01), Cooper
"Color Technology and Its Applications in Industry"; published in Feb. 1970 by Diano Corporation; authored by W. A. Coppock et al.; pp. cover, 1 and 17.

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