H - Electricity – 01 – K
Patent
H - Electricity
01
K
H01K 1/18 (2006.01) H01K 3/06 (2006.01) H01K 3/08 (2006.01)
Patent
CA 2178158
To permit easy assembly of a filament for a halogen incandescent lamp having a filament holder frame (4) to retain an essentially planar filament (11) in position, the frame is made of two pre-manufactured identical frame halves (4a, 4b). Both frame halves have a cross element (7a, 7b), having a plurality of filament holders (10a, 10b) secured thereto, and two support strut portions (8a, 9a, 8b, 9b) at the ends thereof. To assemble the lamp, the two frame halves, together with the filament (11), are placed in a suitable jig, and the filament ends are threaded on one of the support strut portions (8a, 8b) of each one of the frame halves. The filament (11) is hooked on the filament holder (10a, 10b) and, by spreading apart the frame halves, the filament is stretched. The support strut portions (8a, 8b; 9a, 9b) are then connected by welding, thus completing the frame (4), and retaining the filament in stretched position. This permits mechanized assembly of the filament (11) in the frame (4) and, hence, inexpensive manufacture; separating the welding steps of the frame from filament connection reduces oxidation on part of the filament.
Krinke Andreas
Kugler Herbert
Fetherstonhaugh & Co.
Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh
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