Fluorescent lamp with protective shield

Illumination – Guard means

Patent

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Details

362260, 362223, 313110, F21V 1500

Patent

active

049243683

ABSTRACT:
A shatter-containment fluorescent lamp having a protective plastic sleeve in which the sleeve is attached by an adhesive at each end of the lamp envelope in a manner to provide a controlled air space between the glass lamp envelope and the plastic sleeve to prevent direct transmission of stresses from the envelope to the sleeve. The sleeve is also attached to the lamp base by the adhesive so that there is integral connection of the sleeve and the base at each end of the envelope. A retaining ring, also held by the adhesive, covers the base. In a preferred embodiment of the invention, the retaining ring inner surface and the lamp base having mating members to align the retaining ring on the base. In another embodiment, the sleeve has a number of angled slots around its circumference at each end and there are corresponding locking teeth on a retaining ring to accommodate for variations in lamp envelope/protective sleeve length.

REFERENCES:
patent: 2366216 (1945-11-01), Roberts
patent: 3602759 (1971-08-01), Evans
patent: 3673401 (1972-06-01), Du Pont
patent: 3808495 (1974-04-01), Win

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