Forward scatter smoke detector
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 7, 1984
Grant Date -
N/A
app pub date -
Dec 31, 1980
filing date -
Dec 31, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optical smoke detector having a conical masking body located directly between a light source and a light receiver. The masking body is provided with a reflecting surface so that rays from the light source are diverted into a reaction zone to supplement direct rays from the light source to the zone. In one embodiment the reflecting surface is cuspidate while in another embodiment a second masking body is added which shadows the light receiver from viewing the base of the first masking body.
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Family
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Cited Art Landscape
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