Emergency lighting system

Details Emergency lighting system Emergency lighting system

1972-03-02

1977-11-01

Corbin, John K.

Electric lamp and discharge devices: systems

Automatic substitution of the power supply

307 64, H05B 3700

Patent

active

040567575

ABSTRACT:
A system which will provide emergency lighting as desired when the normal power supply such as the utility power is interrupted or otherwise not available. The system provides the emergency power by means of the same wiring that is used to provide the utility power to the lights. In addition, the "on-off" switch or switches used to control the turning on and off of the lights when the utility power is available also provides control of the lights when the emergency supply is being utilized.

REFERENCES:
patent: 1738206 (1929-12-01), Riddles
patent: 2476517 (1949-07-01), Titus
patent: 2534542 (1950-12-01), Bower
patent: 2590611 (1952-03-01), Gunter
patent: 2681429 (1954-07-01), Long
patent: 3172017 (1965-03-01), Moakler
patent: 3373313 (1968-03-01), Prines et al.
patent: 3660714 (1972-05-01), Chandler

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