Automatic lighting device
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United States of America Patent
Stats
-
Jun 14, 1988
Grant Date -
N/A
app pub date -
Dec 11, 1986
filing date -
Dec 11, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An automatic lighting device having a circuit for operating an electric light, a switch for manually actuating the circuit, a detector circuit for determining whether movement above a prescribed threshold level has occurred within the area covered by the electric light within a first preselected period, a circuit responsive to the detector circuit for disabling the circuit for providing electricity if movement has not occurred in the area during the first preselected period, and a circuit for reactivating the circuit for providing electricity in response to the detection of movement in the area within a second preselected period.
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Family
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Cited Art Landscape
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