Electrode system for a metal halide lamp, and associated lamp

Details Electrode system for a metal halide lamp, and associated lamp Electrode system for a metal halide lamp, and associated lamp

2006-02-07

2006-02-07

Guharay, Karabi (Department: 2879)

Electric lamp and discharge devices

With gas or vapor

Having particular electrode structure

C313S331000, C313S574000, C313S332000

Reexamination Certificate

active

06995514

ABSTRACT:
The electrode system for a metal halide lamp with ceramic discharge vessel (4) comprises an electrically conductive leadthrough (9, 10) and an electrode connected thereto, the leadthrough having a fusible region with respect to the electrode, in which that end of the electrode which faces the leadthrough is embedded, at least the fusible region containing one of the high-melting metals Mo or W, and the electrode having a shank made from tungsten. In the regions surrounded by the material of the leadthrough, the electrode has a positively locking means which at least comprises a recess in the shank of the electrode.

REFERENCES:
patent: 5451837 (1995-09-01), Stevens et al.
patent: 6342764 (2002-01-01), Nishiura et al.
patent: 6762557 (2004-07-01), Kanzaki et al.
patent: 6805603 (2004-10-01), Kawamura et al.
patent: 0 587 238 (1994-03-01), None
patent: 0 587 238 (1994-03-01), None
patent: 01/82331 (2001-11-01), None

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