Single-ended metal halide discharge lamp arc gap fabricating pro

Details Single-ended metal halide discharge lamp arc gap fabricating pro Single-ended metal halide discharge lamp arc gap fabricating pro

1983-09-19

1985-04-02

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

445 35, 219121LF, H01J 914

Patent

active

045085145

ABSTRACT:
A process for fabricating metal halide discharge lamps wherein a tungsten rod has a pair of spaced starting coils attached thereto and is connected to an electrical conductor. A pair of notches are ground in the tungsten rod adjacent and intermediate the attached coils and the tungsten rod is sealed into a quartz envelope. A laser beam is focused onto the notches of the tungsten rod through the quartz envelope to sever the tungsten rod and provide an arc gap of a given uniform length.

REFERENCES:
patent: 3716899 (1973-02-01), Kerstetter et al.
patent: 3792224 (1974-02-01), Petro et al.
patent: 3904908 (1975-09-01), Wolfe et al.
patent: 4161672 (1979-07-01), Cap et al.
patent: 4340836 (1982-07-01), Bergman et al.

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