Electric lamp and discharge devices – With gas or vapor – Incandescent filament lamp
Patent
1988-12-28
1989-09-12
Wieder, Kenneth
Electric lamp and discharge devices
With gas or vapor
Incandescent filament lamp
313580, H01K 118
Patent
active
048663409
ABSTRACT:
A halogen incandescent lamp has current-supply conductors, at least one of which is enclosed by an insulator tube which is anchored in the wall of the lamp envelope and extends beyond the end of this current-supply conductor as far as the proximity of the filament. The insulator tube protects the lamp during operation in series arrangement at mains voltage from exploding at the end of its life due to overheating by an arc discharge. The speed at which a discharge arc is extinguished can be increased by enclosing each current-supply conductors in its own insulator tube and is further improved if nitrogen or helium is used as an inert gas.
REFERENCES:
patent: 1647647 (1927-11-01), McKay et al.
patent: 1715580 (1929-06-01), Turner
patent: 4262229 (1981-04-01), Bienvenue et al.
Caems Josephus F.
Ooms Leo F. M.
Treacy David R.
U.S. Philips Corporation
Wieder Kenneth
Wieghaus Brian J.
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