Formed heating ribbon and coil

Details Formed heating ribbon and coil Formed heating ribbon and coil

1977-09-13

1978-12-19

Albritton, C. L.

Electrical resistors

Ribbon resistance element bent or curved on flat side

Helical or wound

219265, 219267, 338279, H01C 300

Patent

active

041308158

ABSTRACT:
An electric igniting element as used in automobile cigar lighters, jet engine igniters and like devices, comprising a spirally wound tight coil made of metal heater ribbon which is transversely formed to have a cross-sectional configuration roughly similar to a wide-spread letter "V" but with a flattened bottom portion and two beaded edge surfaces along one side, which greatly facilitate the coil winding process, effect a greater uniformity, extend the range of coil stock that can be handled while at the same time resulting in a nesting and interlocking of the convolutions that not only provide a mutual support of the same but also produce a small coil having a high metal density.

REFERENCES:
patent: 2959663 (1960-11-01), Fenn
patent: 2959664 (1960-11-01), Fenn
patent: 2975262 (1961-03-01), Schnick
patent: 3909587 (1975-09-01), Mattis

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