Emergency lighting system

Details Emergency lighting system Emergency lighting system

2008-02-04

2010-06-15

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Automatic substitution of the power supply

C315S160000, C315S161000, C315S362000

Reexamination Certificate

active

07737640

ABSTRACT:
The present invention relates to an emergency lighting system comprising one or more first lighting elements and a power supply/charging unit that is incorporated in a host lighting fixture having one or more second lighting elements such as an HID, incandescent or fluorescent lamp. Optionally, a heating element can be provided that allows operation of the system in temperatures too low for operation of conventional emergency lighting systems.

REFERENCES:
patent: 5015919 (1991-05-01), Vila-Masot et al.
patent: 5986407 (1999-11-01), Chang
patent: 6049178 (2000-04-01), Sheu et al.
patent: 6339296 (2002-01-01), Goral
patent: 6628083 (2003-09-01), Pickering
patent: 7045964 (2006-05-01), Hermans

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