Electric incandescent lamp

Details Electric incandescent lamp Electric incandescent lamp

1989-05-11

1990-09-25

O'Shea, Sandra L.

Electric lamp and discharge devices

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

For filament

313279, H01K 118

Patent

active

049595865

ABSTRACT:
The electric incandescent lamp has a filament (2) comprising light-emitting sections (5,6,7) and non-light-emitting sections (8,9) integral therewith. A non-light-emitting section (9) has at its two ends a helically wound portion (10,11), which portions are interconnected by the tungsten wire (3) from which the filament (2) is wound. An additional tungsten wire (14) extends along the non-light-emitting section (9) and is wound around each of its helically wound portions (10,11). The incandescent lamp has a filament (2) of a simple construction, whose manufacture can readily be mechanized.

REFERENCES:
patent: 3416024 (1968-12-01), Young
patent: 3758807 (1973-09-01), Opde Beeck
patent: 3943395 (1976-03-01), Huston et al.
patent: 4052637 (1977-10-01), Op de Beeck
patent: 4272698 (1981-06-01), Oyama et al.

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