Electrode coil for discharge lamps and method for producing such

Details Electrode coil for discharge lamps and method for producing such Electrode coil for discharge lamps and method for producing such

1996-07-10

1998-03-17

Patel, Ashok

Electric lamp and discharge devices

Electrode and shield structures

Filament or resistance heated electrodes

313343, 313578, 313491, 313632, 140 715, H01K 114, H01J 6106

Patent

active

057290814

ABSTRACT:
The invention relates to electrode coils for discharge lamps having a coiled wire (1) which is wound around by a braiding wire (2). The coiled wire (1) has both turns (II) with an essentially circular cross-section and turns (I, III) with an oval cross-section. In order to produce the bar-shaped coil according to the invention, the unit comprising the coiled wire (1), the first core wire (3) and the braiding wire (2) is wound around a second core wire (4) which is flattened in places. Unrolling of the braiding wire (2) is prevented thereby. Production of the coil is cost-effective, since only two core wires are required and the coil ends are not fused.

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