Illumination – Plural light sources – With support
Patent
1996-09-09
1998-04-14
Sember, Thomas M.
Illumination
Plural light sources
With support
362806, 362391, 362267, 439419, F21V 2100, H01R 424
Patent
active
057384355
ABSTRACT:
A waterproof lampholder is provided. The lampholder comprises a lamp receptacle and a cap member. An annular extension is formed at an internal wall and adjacent a trumpet opening of the lamp recceptacle engageable with an outer periphery of a bulb for preventing external water from permeating into the forward end of the lampholder. An inverse V-shaped annular projection is in the bottom of the lamp receptacle aligned with a V-shaped annular groove formed in the inward surface of the cap member for preventing external water from permeating into the rearward end of the lamp receptacle. A pair of slotted projections on the cap member is aligned with a pair of M-shaped slots in the bottom of the lamp receptacle to define a pair of juxtaposed circular spaces for receiving a two-ply electrical cable which also provides waterproof function. Upon this arrangement, the present invention will no longer be causing an short circuit or an electric shock while raining or using a sprinkle in a yard.
REFERENCES:
patent: 4777573 (1988-10-01), Liao
patent: 5366386 (1994-11-01), Liao
patent: 5542858 (1996-08-01), Liao
patent: 5547392 (1996-08-01), Cheng et al.
patent: 5552348 (1996-09-01), Wu
Lin Mei-Mei
Liu Li-Wen
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