Electric lamp or space discharge component or device manufacturi – Process – Combined – e.g. – with shaping of lamp or device envelope
Patent
1996-10-07
1998-03-17
Ramsey, Kenneth J.
Electric lamp or space discharge component or device manufacturi
Process
Combined, e.g., with shaping of lamp or device envelope
H01J 6504, H01J 926
Patent
active
057279756
ABSTRACT:
An arc tube for an electrodeless metal halide discharge lamp has an arc chamber fabricated from a material selected from the group consisting of magnesia-doped polycrystalline alumina, silicon dioxide doped polycrystalline alumina and monocrystalline alumina. The arc chamber is tubular and has at least one end and has a given outside diameter. At least one end cap closes the at least one end of the arc chamber, the end cap being formed from magnesia-doped polycrystalline alumina and comprising a substantially cup-shaped member having an inside diameter which is sealed to the outside diameter of the arc chamber by a shrink-fit.
REFERENCES:
patent: 3026210 (1962-03-01), Coble
patent: 4373030 (1983-02-01), Kaneno et al.
patent: 4503356 (1985-03-01), Kobayashi et al.
patent: 4545799 (1985-10-01), Rhodes et al.
patent: 5552670 (1996-09-01), Heider et al.
Kramer Jerry
Lapatovich Walter P.
Walsh John
Wei George C.
McNeill William H.
Osram Sylvania Inc.
Ramsey Kenneth J.
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