Triple coil incandescent filament

Electric lamp and discharge devices – Incandescent lamps

Patent

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Details

313344, 313345, H01K 114

Patent

active

044994010

ABSTRACT:
This invention relates to a single strand filament wire arranged into a triple-coil filament for an incandescent lamp. The triple-coil filament has selected dimensions that do not require recrystallization of the tungsten wire of the triple-coil filament prior to arranging the triple-coil filament within the incandescent lamp.

REFERENCES:
patent: 2218345 (1940-10-01), Spaeth
patent: 2306925 (1942-12-01), Aicher
patent: 2329126 (1943-09-01), Lemmers
patent: 3003077 (1961-10-01), Thomas
patent: 3294125 (1966-12-01), Heine
patent: 4316116 (1982-02-01), Graves

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