Lighting fixture having a sealed, weatherproof secondary cover

Details Lighting fixture having a sealed, weatherproof secondary cover Lighting fixture having a sealed, weatherproof secondary cover

1987-12-29

1989-02-14

Lazarus, Ira S.

Illumination

Light source and modifier

With sealing means or artificial atmosphere

362268, 362363, F21V 3102

Patent

active

048050776

ABSTRACT:
A light source is positioned within a substantially cylindrical, optically transparent enclosure having a load supporting base. The exterior surface of the enclosure includes a light converging lens having a plurality of jagged edges subject to contamination by dirt and moisture. An optically transmissive, substantially cylindrical secondary cover having a smooth exterior surface is coaxially fitted over the first enclosure to protect the jagged elements of the enclosure lens from contamination by dirt or moisture. An hermetic seal is formed between the lower, outer surface of the lens and the lower, inner surface of the secondary cover to prevent introduction of either dirt or moisture into the chamber formed between the exterior of the lens and the interior of the secondary cover.

REFERENCES:
patent: 1906181 (1933-10-01), Smally
patent: 2773171 (1956-12-01), Pennow
patent: 3221162 (1965-11-01), Heenan et al.
patent: 3253138 (1966-05-01), Nagel
patent: 3271735 (1966-09-01), Gosswiller
patent: 4142179 (1979-02-01), Lowndes
patent: 4215390 (1980-07-01), Brandt
patent: 4290098 (1981-09-01), Pierson
patent: 4564890 (1986-01-01), Poyner
patent: 4638411 (1987-01-01), Trainor
Austin Electronics, Inc. brochure, Printed in U.S.A. Form No. 0386-XVM (C818OH), 1986.

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