High-pressure discharge lamp with improved electrodes

Details High-pressure discharge lamp with improved electrodes High-pressure discharge lamp with improved electrodes

1986-07-11

1990-08-28

Yusko, Donald J.

Electric lamp and discharge devices

With gas or vapor

Having particular electrode structure

313628, 313574, 445 46, 445 51, B01J 61073

Patent

active

049528416

ABSTRACT:
The high-pressure discharge lamp has electrodes which comprise a tungsten rod (24) which projects inside the lamp vessel and around whose end (25) projecting inside the lamp vessel a tungsten wire portion (26) is helically wound. The ends (30, 31) of the helically wound wire portion (26) are located within the sheath (29) of this wire portion (26) and the end faces (32, 33) are rupture surfaces devoid of burrs.

REFERENCES:
patent: 3132409 (1964-05-01), Freeman
patent: 3170081 (1965-02-01), Rokosz
patent: 4150317 (1979-04-01), Laska et al.
patent: 4319158 (1982-03-01), Watanabe et al.
patent: 4559473 (1985-12-01), McVey

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