Control of tungsten filament erosion in a halogen lamp
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United States of America Patent
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Oct 27, 1981
Grant Date -
N/A
app pub date -
Oct 2, 1979
filing date -
Oct 2, 1979
priority date (Note) -
Expired
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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.
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