High-pressure metal vapor discharge lamp with characteristic fus

Details High-pressure metal vapor discharge lamp with characteristic fus High-pressure metal vapor discharge lamp with characteristic fus

1985-05-03

1987-08-11

DeMeo, Palmer C.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Automatic shunt circuit closing or cut-out switch

315 63, 315 50, 315 73, H01J 744, H01J 1346, H01J 1734

Patent

active

046864229

ABSTRACT:
A high-pressure metal vapor discharge lamp comprising an outer tube, a light emitting tube located within the outer tube and made of a light-transmissive ceramics material, and a fuse electrically connected in series with the light emitting tube, in which said fuse has such a blowing characteristic as given by the following equation and at a rated output during the lighting of the lamp the density of a current through the fuse is not more than 23.9 A/mm.sup.2 :

REFERENCES:
patent: 2156988 (1939-05-01), Jancke et al.
patent: 2494917 (1950-01-01), Van Liempt
patent: 3727091 (1973-04-01), DeCaro
patent: 3796914 (1974-03-01), De Caro et al.
patent: 3849691 (1974-11-01), Collins
patent: 3864598 (1975-02-01), Cardwell, Jr.
patent: 4599543 (1986-07-01), Strok
Patent Abstract of Japan, E. section, vol. 6, No. 238, 11/26/82.
The Patent Office Japanese Gov., p. 79 E 144 Kokai-No. 57-138 767 (Iwasaki Denki).
The Patent Office Japanese Govt., Publication No. 57-138767.
The Patent Office Japanese Govt., Publication No. 59-108258.
The Patent Office Japanese Govt., Publication No. 57-138767.
The Patent Office Japanese Govt., Publication No. 59-108258.

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