Smoke detector having variable level sensitivity
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
May 12, 1992
Grant Date -
N/A
app pub date -
Jul 11, 1989
filing date -
Mar 5, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A smoke detector having variable sensitivity to smoke levels and using one button both to test the smoke detector and actuate a mode of diminished sensitivity to smoke levels. The smoke detector is operable in a normal sensitivity mode and a diminished sensitivity mode with rapid switching between the modes. The sensitivity to smoke levels is substantially constant when in either the normal or diminished sensitivity mode.
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Family
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Cited Art Landscape
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