Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent
1989-03-15
1989-12-05
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
307150, H02J 700
Patent
active
048854743
ABSTRACT:
An emergency lighting fixture, for plug-in installation in a wall connector mounted protruding from a fixed wall plate, has a back plate secured to its wall-engaging face. The back plate and the wall plate are provided with interfitting flanges and a pivoted latch secures the plates together in facing juxtaposed engagement. A mating multi-prong plug and socket connects A.C. line power from the wall connector to internal circuitry in the lighting fixture for lighting a lamp, for charging a rechargeable internal battery and for operating a transfer circuit to deliver battery power in the event of line power failure. The conductor from one terminal of the battery is connected to said circuitry by two prong-and-socket pairs, in the multi-prong plug and socket, which are connected by a permanent jumper conductor in the wall connector, affording battery isolation in the lighting fixture until its plug-in installation in the wall connector is completed.
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Ten-page undated Beghelli brochure received May 16, 1989, showing Practica Emergency Lighting Units, Beghelli, Inc., Jacksonville, Fla.
Johnstone Robert M.
Wegrzyn Joseph S.
Dual Lite, Inc.
Logan Sharon D.
Shoop Jr. William M.
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