Process for gaseously opalizing bulbs

Details Process for gaseously opalizing bulbs Process for gaseously opalizing bulbs

1981-08-28

1983-02-15

Hoffman, James R.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427106, 427107, 427164, 427167, 427237, B05D 304, B05D 722, C03C 17345

Patent

active

043741576

ABSTRACT:
Glass bulbs are given a deposit of silica by oxidation of silane with oxygen on the inside of the bulb. The silica deposit is formed by oxidation, with oxygen through an electric arc, of silane diluted to a slight concentration of 0.1 to 3% by volume in a gas inert in regard to silane. The process applies to opalizing, i.e. providing a light diffusing layer, incandescent and discharge bulbs of different sizes, including tubes, and globes of lighting fixtures.

REFERENCES:
patent: 2545896 (1951-03-01), Pipkin
patent: 3109747 (1963-11-01), Foote
patent: 3352703 (1967-11-01), Domicone et al.
patent: 3842306 (1974-10-01), Henderson et al.
patent: 3868266 (1975-02-01), Henderson et al.

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