Control of tungsten filament erosion in a halogen lamp

Details Control of tungsten filament erosion in a halogen lamp Control of tungsten filament erosion in a halogen lamp

1979-10-02

1981-10-27

Demeo, Palmer C.

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For plural electrodes of discharge device

313316, H01K 150, H01K 118

Patent

active

042976111

ABSTRACT:
The present invention is directed to an incandescent lamp having tungsten filaments and halogen gas in the lamp enclosure wherein an inoperative surrogate tungsten filament is incorporated to reduce the tendency for active halogen gas to attack the filament and other metal parts within the lamp enclosure.

REFERENCES:
patent: 2072788 (1937-03-01), Andrews
patent: 2179437 (1939-11-01), Socolofsky
patent: 3211943 (1965-10-01), Cardwell, Jr.
patent: 3458746 (1969-07-01), Horster et al.
patent: 3497753 (1970-02-01), Huston, Jr.
patent: 3522470 (1970-08-01), Bonazoli et al.
patent: 3588564 (1971-06-01), Vetere
patent: 3717784 (1973-02-01), Matheson

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