Emergency lighting fixture

Details Emergency lighting fixture Emergency lighting fixture

1987-08-27

1989-01-31

Yeung, James C.

Illumination

Automatic substitution of power supply or light source

362147, 362254, 362276, 362365, F21V 1904

Patent

active

048020656

ABSTRACT:
An emergency lighting fixture for mounting in a ceiling and particularly a suspended ceiling, which includes a drop down panel normally closing an opening in the ceiling and an electric lamp concealed behind the panel. If a.c. power should fail, the panel automatically drops down below the level of the ceiling along with the electric lamp and the lamp automatically turns on to illuminate a selected path of egress.

REFERENCES:
patent: 1938237 (1933-05-01), Wagenhorst
patent: 2198077 (1940-04-01), Curtis
patent: 4180850 (1979-12-01), Bivens
patent: 4233652 (1980-11-01), Oswald
patent: 4306279 (1981-12-01), Cohen
patent: 4516191 (1985-05-01), Moriyama
patent: 4651258 (1987-03-01), Davis et al.
patent: 4708223 (1987-11-01), Orndorff et al.
Capri Lighting Catalog (1984) "Caprilow Voltage", pp. 7 & 11, 6430 E. Slauson Ave.; Los Angeles, California 90040.

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