Electric lamp and discharge devices – With support and/or spacing structure for electrode and/or... – For filament
Patent
1991-12-27
1993-10-19
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
052549020
ABSTRACT:
Filament supports for supporting and centering a filament in a double-ended lamp envelope include 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 contacts an inner surface of the lamp envelope at a plurality of discrete, circumferentially spaced-apart contact regions that are substantially equally spaced from the central axis. The filament supports are attached to opposite ends of the filament for accurately centering the filament within 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: 2523033 (1949-12-01), Leighton
patent: 3124713 (1964-03-01), Randmer
patent: 3783329 (1974-01-01), McNeill et al.
patent: 4510416 (1985-04-01), Meade et al.
patent: 4942331 (1990-07-01), Bergman et al.
patent: 4959585 (1990-09-01), Hoegler et al.
Gagnon Peter R.
Griffin Robert M.
Leadvaro Stephen J.
Martin Roy C.
GTE Products Corporation
Patel N. D.
Romanow Joseph S.
Yusko Donald J.
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