Electric lamp and discharge devices: systems – With radiant energy sensitive control means – Electric switch controlled by the radiant energy responsive...
Patent
1978-05-05
1979-12-04
La Roche, Eugene R.
Electric lamp and discharge devices: systems
With radiant energy sensitive control means
Electric switch controlled by the radiant energy responsive...
250206, 315154, 315313, 315360, 361173, H05B 3702, H05B 3902
Patent
active
041774051
ABSTRACT:
A photocell-controlled lighting system is disclosed. The system comprises a first photocell-controlled operated by a photocell, at least one night or decorative light adapted to be connected to a power source, at least one spotlight, also adapted for connection to the power source, a second relay adapted for connection to the power source and responsive to energization of the photocell-controlled relay for energizing the night or decorative light and to de-energization of the photocell-controlled relay when the photocell is illuminated by the lights of an automobile entering the driveway of a house for switching off the night or decorative light, and a third time relay adapted for connection to the power source and operated by the second relay when the lights of the automobile are switched off for switching of the spotlight for a predetermined time interval.
REFERENCES:
patent: 2914709 (1959-11-01), Rabinow
patent: 3428861 (1969-02-01), Zinsmeyer
patent: 3430052 (1969-02-01), Stephan
patent: 3886352 (1975-05-01), Lai
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