Optical smoke detectors
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 22, 1987
Grant Date -
N/A
app pub date -
Aug 13, 1984
filing date -
Aug 12, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There is provided a flash reflector for maximizing the intensity of light passing into an air sampling chamber of a smoke detector which enables a reduction in power requirements for the light source. The reflector includes a concave reflecting element to focus light from each infinitesimal cross-sectional element off the arc of ionized gas in a flash tube the light output from the whole length of the tube which is optionally of U-shape being focused into the central region of the sampling chamber.
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Family
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