Process of gaseous opalization of light bulbs

Details Process of gaseous opalization of light bulbs Process of gaseous opalization of light bulbs

1982-05-05

1984-03-20

Newsome, John H.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

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

Patent

active

044381522

ABSTRACT:
In a process of gaseous opalization a film of silica is formed by an oxidation reaction with a dry gas containing oxygen. Pure oxygen or oxygen diluted in an inert gas, other than nitrogen, may be used. An electric arc is generated by an alternating voltage between 5,000 and 10,000 volts and is directed at a chlorinated silicon compound, entrained by the dry gas containing oxygen, the feeding of which gas carrier does not form silica on the electrodes which generate the arc. This process may be applied to the opalization of incandescent and discharge bulbs of various sizes including tubes and globes of lighting apparatus.

REFERENCES:
patent: 2967113 (1961-01-01), Liebhafsky et al.
patent: 4334903 (1982-06-01), MacChesney et al.
patent: 4349582 (1982-09-01), Beerwald et al.
patent: 4374157 (1983-02-01), Barbier et al.

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