Photoelectric smoke detector
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 28, 1988
Grant Date -
N/A
app pub date -
Aug 23, 1985
filing date -
Aug 23, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A photoelectric smoke detector is equipped with a light emitter for radiating light into a measuring space. A light receiver detects scattered light caused by the presence of smoke in the measuring space. The measuring chamber is constructed as a light trap such that the light beam radiated by the light emitter is multiply reflected and cannot reach the light receiving element of the light receiver.
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Cited Art Landscape
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