Incandescent lamp having improved filament support structure

Details Incandescent lamp having improved filament support structure Incandescent lamp having improved filament support structure

1991-12-11

1993-12-14

O'Shea, Sandra L.

Electric lamp and discharge devices

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

For filament

313578, H01K 118

Patent

active

052706095

ABSTRACT:
An incandescent lamp having a filament with an integral support portion between its ends which bears against the lamp envelope for supporting the filament therein. The integral support portion includes a length of electrically conductive support wire enclosed within the filament, the filament being continuously coiled over the entire length of said support wire. Accordingly to a favorable embodiment, the support wire is a retained length of winding mandrel.

REFERENCES:
patent: 3496403 (1970-02-01), Palermo et al.
patent: 3544188 (1970-12-01), Danko et al.
patent: 3600053 (1971-08-01), Smith
patent: 3940650 (1976-02-01), Janssen
patent: 4499401 (1985-02-01), Graves et al.
patent: 5001388 (1991-03-01), Janssen et al.

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