Method of making a ceramic arc tube for metal halide lamps

Details Method of making a ceramic arc tube for metal halide lamps Method of making a ceramic arc tube for metal halide lamps

1998-10-02

1999-12-21

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Outside of mold sintering or vitrifying of shaped inorganic...

Producing hollow article

264614, 264642, 264654, 264657, 264666, 313624, 313625, 445 22, 445 26, C04B 3700

Patent

active

060045035

ABSTRACT:
A method of making a ceramic arc tube for a metal halide lamp comprises the steps of forming as an integral unit a hollow body having one open end and a substantially closed end. The substantially closed end includes an outwardly extending capillary tube having an electrode receiving aperture therein that communicates with the hollow body. An end cap is then formed for closing the open end. The end cap comprises an annular portion and an extending capillary tube, The end cap is fitted into the open end of the hollow body to form a pre-assembly. The pre-assembly is then fired to seal the end cap to the hollow body to form an assembly and the assembly is subsequently fired to sinter the same.

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patent: 5682082 (1997-10-01), Wei
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