Light scattering smoke detector

Details Light scattering smoke detector Light scattering smoke detector

1978-06-22

1980-08-05

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356338, G01N 2126

Patent

active

042163773

ABSTRACT:
A smoke detector having a housing including openings for admission of smoke, a smoke detecting chamber within said housing with the wall of said chamber formed of spaced overlapping elements which form a serpentine path therebetween, means on one side of said chamber for emitting light into said chamber, a light detector adjoining and shielded from said light source and a conical reflector in said chamber and on a side opposite said light source and detector.

REFERENCES:
patent: 3185975 (1965-05-01), Kompellin
patent: 3868184 (1975-02-01), Marsocci
patent: 4124298 (1978-11-01), Steele

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