Electric lamp and discharge devices – With gas or vapor – Having electrode lead-in or electrode support sealed to...
Reexamination Certificate
2011-03-01
2011-03-01
Ton, Toan (Department: 2889)
Electric lamp and discharge devices
With gas or vapor
Having electrode lead-in or electrode support sealed to...
C313S634000
Reexamination Certificate
active
07898179
ABSTRACT:
A lamp (100) comprises an outer envelope (120) having first and second electrical lead-ins (140, 160) sealed into a base (180) of the envelope (120). A ceramic arc tube (200) is operatively mounted within the envelope (120), the arc tube (200) having at least one electrode (220) therein. A tubular, niobium feed-through (240) is connected to the at least one electrode (220) and sealed to the ceramic body (120) at a joint (260) that can comprise a glass frit (260a). A stainless steel rod (280) is electrically connected between the electrical lead-in (140) and the tubular niobium feed-through (240), the stainless steel rod (280) being the only electrical connection between the lead-in (140) and the niobium feed-through (240).
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van Vliet, J.A.J.M., de Groot, J.J., “High-Pressure Sodium Discharge Lamps”, in Physical Science, Measurement and Instrumentation, Management and Education, Reviews, IEE Proceedings, vol. 128, Pt. A, No. 6 (Sep. 1981) pp. 415-441 (ISSn: 0143-702X).
Bourgery Matthew A.
Chao Chung-Yao
Townsend Paul H.
Hanley Britt D
Osram Sylvania Inc.
Podszus Edward S.
Ton Toan
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