Ceramic arc tube of metal vapor discharge lamps and a method of

Details Ceramic arc tube of metal vapor discharge lamps and a method of Ceramic arc tube of metal vapor discharge lamps and a method of

1981-01-29

1983-06-07

Czaja, Donald E.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264 12, 264 66, 264523, C04B 3564

Patent

active

043870678

ABSTRACT:
The disclosed ceramic arc tube of metal vapor 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.

REFERENCES:
patent: 3026210 (1962-03-01), Coble
patent: 3875277 (1975-04-01), Bratton et al.
patent: 3907949 (1975-09-01), Carlson
patent: 4161672 (1979-07-01), Cap et al.
patent: 4211758 (1980-07-01), Buhrer
patent: 4254356 (1981-03-01), Karikas
patent: 4277716 (1981-07-01), Bauks, Jr.
patent: 4339686 (1982-07-01), Potter

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