Electric lamp and seal structure therefor

Details Electric lamp and seal structure therefor Electric lamp and seal structure therefor

1990-07-13

1991-12-31

DeMeo, Palmer C.

Electric lamp and discharge devices

With gas or vapor

Having electrode lead-in or electrode support sealed to...

313634, 313331, 313318, H01J 6136, H01J 1326

Patent

active

050775057

ABSTRACT:
The electric lamp has a quartz glass lamp vessel (1) with molybdenum current supply conductors (3) extending to an electric element (2) arranged in the lamp vesel (1). The current supply conductors (3) have a continuous coating (4) of quartz glass which is fused to the lamp vessel (1). The coating (4) forms with the current supply conductor (3) a glass/metal interface (5). The glass of the coating (4) adjoining the interface (5) contains thorium, hafnium, chromium, aluminum, titanium, tantalum, magnesium, calcium, strontium, barium, zirconium, lanthanum, scandium, a lanthanide, niobium, boron or yttrium. The coating (4) has a very strong adhesion to the metal; the lamp vessel (1) has a great strength.

REFERENCES:
patent: 2114869 (1938-04-01), Bol et al.
patent: 2617068 (1952-11-01), Spinnler et al.
patent: 2675497 (1954-04-01), Meister et al.
patent: 3448320 (1969-06-01), Millikan
patent: 3742283 (1973-06-01), Loughridge
patent: 4074167 (1978-02-01), van den Broek et al.
patent: 4171500 (1979-10-01), Van Lieshout
patent: 4282395 (1981-08-01), Hagemann
patent: 4691142 (1987-09-01), Dohmen

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