Smoke penetrating emergency light
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 14, 1984
Grant Date -
N/A
app pub date -
Dec 27, 1982
filing date -
Dec 27, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A self-contained, portable lighting apparatus is disclosed. The apparatus functions as an escape light in conjunction with smoke detector alarms in that it is activated by detecting the sound of such alarms. A lighting unit includes circuitry for detecting the alarm of a smoke detector, integrating the detected signal over a predetermined time to minimize the incidence of false alarm, circuitry for delaying the shutting off of the light after the alarm signal has ceased and circuitry for detecting a low voltage condition of the batteries and for providing an intermittent sound that is indicative of a low voltage battery condition.
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Family
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Cited Art Landscape
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