Emergency light

Details Emergency light Emergency light

2007-05-22

2007-05-22

Husar, Stephen F (Department: 2875)

Illumination

Automatic substitution of power supply or light source

C362S259000, C362S286000, C362S289000, C362S364000, C340S333000

Reexamination Certificate

active

11083246

ABSTRACT:
An emergency light for providing illumination during emergency conditions with a housing, a light source, and a drive arrangement for driving the light source between retracted and extended positions. Flanges, which can be removable, can project from the housing. Fastening arrangements each comprising a mounting bolt in combination with a locking clip can retain the emergency light in relation to a support surface. A motor in combination with a drive screw threadedly engaged with the light source can form the drive arrangement to produce an axial movement of the light source. A limit switch can sense a position of the light source, and a reflector can guide light from the light source. An emergency condition sensor can trigger an extension and illumination of the light source. A battery can power the light during a power failure. Plural lights and a central control unit can form an emergency lighting arrangement.

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patent: 6371621 (2002-04-01), Le Bel
patent: 6538568 (2003-03-01), Conley, III
patent: 2003/0048626 (2003-03-01), Johler et al.

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