Incandescent lamp having filament with polygonal turns

Details Incandescent lamp having filament with polygonal turns Incandescent lamp having filament with polygonal turns

1998-01-13

2000-06-13

Patel, Nimeshkumar D.

Electric lamp and discharge devices

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

For filament

313578, 313333, 445 48, 445 50, H01K 118, H01K 110

Patent

active

060753137

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).

REFERENCES:
patent: 2142865 (1939-01-01), Zabel
patent: 3119946 (1964-01-01), Kerstetter et al.
patent: 3788721 (1974-01-01), Vause
patent: 4616682 (1986-10-01), Groenewegen
patent: 4857709 (1989-08-01), Janssen et al.
patent: 5523650 (1996-06-01), Terheijden et al.
patent: 5556191 (1996-09-01), Maassen
patent: 5565734 (1996-10-01), Pinot

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