Ceramic HID lamp with special frame wire for stabilizing the...

Electric lamp and discharge devices – With gas or vapor

Reexamination Certificate

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C313S607000

Reexamination Certificate

active

06844676

ABSTRACT:
A high-pressure discharge lamp of the ceramic metal halide type having power ranges of about 150 W to about 1000 W. Such lamps have outer bulb enclosing a cylindrical ceramic discharge vessel enclosing a discharge space. The discharge vessel includes an ionizable material containing a metal halide; a first and second discharge electrode feedthrough; and a first and second current conductor connected to the first and second discharge electrode feedthrough, respectively. A frame wire structure includes at least one frame wire, connected to the current conductors, through a conductor. The frame wire structure extends between the ceramic discharge vessel and the glass bulb, and is effective to reduce arc bending, regardless of the orientation of the lamp during operation in a fixture and regardless of the relative position of the frame wire to the arc tube.

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