Electric lamp and discharge devices: systems – With radiant energy sensitive control means – Electric switch controlled by the radiant energy responsive...
Patent
1979-09-11
1981-12-08
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
With radiant energy sensitive control means
Electric switch controlled by the radiant energy responsive...
307116, 307117, 315360, H05B 3702
Patent
active
043050212
ABSTRACT:
A switch for controlling the operation of a light source in response to the presence of a moving person or object and in response to the magnitude of ambient light provided other than by the light source, said switch comprising means for detecting the presence of a moving body; timing means responsive to said detecting means, said timing means assuming a first condition for a selected period of time in response to the detection of a moving body by said detecting means; means for monitoring the magnitude of ambient light, said monitoring means assuming a first condition when the magnitude of ambient light is below or at a selected value and assuming a second condition when the magnitude of ambient light is above the selected value; and means for actuating a light source only when said timing means is in its first condition and when said monitoring means is in its first condition.
REFERENCES:
patent: 3459961 (1969-08-01), Ravas
patent: 4021679 (1977-05-01), Bolle et al.
Farber Martin A.
LaRoche Eugene R.
Lecloux Jacques
Schreiden Jean
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