H - Electricity – 01 – J
Patent
H - Electricity
01
J
25/135, 313/135
H01J 61/30 (2006.01) H01J 9/24 (2006.01)
Patent
CA 1164038
Abstract of the Disclosure The disclosed ceramic arc tube of metal vapour discharge lamps has an arc discharge portion with electrode- holding end portions integrally formed at opposite ends thereof. The outside diameter of the arc discharge portion is larger than that of the electrode-holding end portions. The ceramic arc tube is made by placing a tubular green body in a fusiform cavity of a die, inflating the middle portion of the green body more than end portions thereof, and firing the thus shaped green body.
370146
Furuta Mamoru
Kobayashi Kazuo
Maeno Yoshio
Ngk Insulators Ltd.
Smart & Biggar
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