Electric incandescent lamp

Details Electric incandescent lamp Electric incandescent lamp

1981-06-10

1983-11-08

Chatmon, Saxfield

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For filament

313274, 313315, H01J 188, H01J 1942, H01K 118

Patent

active

044144849

ABSTRACT:
In an electric incandescent lamp having a tungsten filament with a number of light-emissive sections (5, 7) connected by a non-light-emissive conductor, complicated constructions are often used so that said non-light-emissive conductor dissipates little energy.
In such an incandescent lamp according to the invention the non-light-emissive conductor consists of a piece (9) of the tungsten wire (1) from which the light-emissive sections (5, 7) have been wound helically and around which a wire (2) of a less noble metal than tungsten is wound.
The lamp may be used as a copying lamp. FIG. 1e.

REFERENCES:
patent: 3416024 (1968-12-01), Young
patent: 3764845 (1973-10-01), De Fraeye
patent: 4272698 (1981-06-01), Oyama et al.

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