Lamp with protective coating and method of applying same

Details Lamp with protective coating and method of applying same Lamp with protective coating and method of applying same

1976-06-23

1981-07-21

Dority, Jr., Carroll B.

Combustion

Illuminating flash device, e.g., photographic bulb, etc.

Fuel charge within sealed transparent casing, e.g., bulb

F21K 500

Patent

active

042795907

ABSTRACT:
A photoflash lamp having a glass envelope with a clear protective exterior coating comprising a photopolymer reinforced with glass fibers. In applying the coating, a long strand of glass fibers is wrapped about the lamp envelope, which is then dipped in a liquid photopolymer, or short lengths of glass fiber are dispersed throughout the liquid photopolymer, either by premixing or application after dipping. The wet-coated lamp is then cure-hardened by a short period of irradiation with a source of ultraviolet light.

REFERENCES:
patent: 2641576 (1953-06-01), Sachs et al.
patent: 2916376 (1959-12-01), Ritter
patent: 3223273 (1965-12-01), Thorington
patent: 3675004 (1972-07-01), Gulbrasen
patent: 3770697 (1973-11-01), Holub et al.
patent: 3959525 (1976-05-01), Sentementes et al.
patent: 3992136 (1976-11-01), Shaffer
patent: 3992276 (1976-11-01), Powanda et al.
patent: 4008341 (1977-02-01), Kehr
patent: 4012553 (1977-03-01), Clemens
patent: 4076489 (1978-02-01), Schroeter et al.

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