Electric lamp and discharge devices – With support and/or spacing structure for electrode and/or... – For filament
Patent
1994-04-07
1995-04-04
Yusko, Donald J.
Electric lamp and discharge devices
With support and/or spacing structure for electrode and/or...
For filament
313271, H01K 118
Patent
active
054040698
ABSTRACT:
An incandescent lamp containing a coiled filament within a vitreous envelope wherein the filament is supported at at least one point along its coil length by a refractory metal support wire one end of which is welded to a coil and the other end secured to the envelope wall by a glass bead. The support prevents filament sag during lamp operation and is especially useful with double-ended high intensity tungsten-halogen lamps having an elliptically shaped filament chamber with an infrared reflecting and visible light transmitting optical interference coating on the chamber.
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Ahlgren Frederic F.
Bergman Rolf S.
Olwert Ronald J.
Price Gary L.
Schindler Donald R.
Corwin Stanley C.
General Electric Company
Hawranko George E.
Patel Vip
Yusko Donald J.
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