Filament support for tubular lamp capsule

Details Filament support for tubular lamp capsule Filament support for tubular lamp capsule

1991-12-27

1993-10-05

Yusko, Donald J.

Electric lamp and discharge devices

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

For filament

313271, 313284, 313286, H01K 124

Patent

active

052508730

ABSTRACT:
A filament support for supporting and centering a filament in a double-ended lamp envelope includes an inlead portion defining a central axis, a filament attachment portion and a centering portion interconnecting the inlead portion and the filament attachment portion. The centering portion includes first and second arcuate segments for contacting an inner surface of the lamp envelope. The first and second arcuate segments are axially spaced apart and are interconnected by an axial segment. Filament supports are connected to opposite ends of the filament for accurately centering the filament in the lamp envelope. The filament supports are particularly useful in a tubular incandescent lamp capsule having an infrared reflective coating on its outer surface.

REFERENCES:
patent: 1565600 (1916-03-01), Stoekle
patent: 4510416 (1985-04-01), Meade et al.
patent: 4942331 (1990-07-01), Bergman et al.
patent: 4959858 (1990-10-01), Hoegler et al.
patent: 5079475 (1992-01-01), Oortman Gerlings et al.

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