Incandescent lamp having filament with polygonal turns
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United States of America Patent
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-
Jun 13, 2000
Grant Date -
N/A
app pub date -
Jan 13, 1998
filing date -
Jan 15, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The electric incandescent lamp has a tubular quartz glass lamp vessel (1) in which a filament (10) having adjoining turns is axially disposed. The filament (10) is kept centered in the lamp vessel (1) by supports (15) which are connected to the filament (10) intermediate its ends (12) and which bear against the lamp vessel (1). The turns (11) of the filament (10) are formed as polygons, and the adjacent angles of adjoining turns are angularly displaced relative to one another about the axis (2) of the lamp vessel (1).
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