Automatic lighting device
First Claim
1. An automatic lighting device comprising a circuit for operating an electric light, means for manually activating the circuit for operating an electric light, means for detecting whether movement above a prescribed threshold level has occurred within the area covered by the electric light within a first preselected period, means responsive to the means for detecting whether movement has occurred for disabling the circuit for operating an electric light if movement has not occurred in the area during the first preselected period, and means for reactivating the circuit for operating an electric light in response to the detection of movement in the area within a second preselected period.
4 Assignments
0 Petitions
Accused Products
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.
92 Citations
5 Claims
- 1. An automatic lighting device comprising a circuit for operating an electric light, means for manually activating the circuit for operating an electric light, means for detecting whether movement above a prescribed threshold level has occurred within the area covered by the electric light within a first preselected period, means responsive to the means for detecting whether movement has occurred for disabling the circuit for operating an electric light if movement has not occurred in the area during the first preselected period, and means for reactivating the circuit for operating an electric light in response to the detection of movement in the area within a second preselected period.
Specification