Electrical heating device

Details Electrical heating device Electrical heating device

H - Electricity

05

B

309/1, 309/84

H05B 3/36 (2006.01) F41J 2/02 (2006.01) H05B 3/26 (2006.01)

Patent

CA 1232934

Pile No. 412/1470 Abstract of Disclosure An electrical heating device comprises a substrate, a pair of spaced apart elongated conductors which may be parallel and may extend longitudinally of the substrate, and a semi-conductor pattern carried on the substrate and electrically connected to and extending between the conductors. The semi-conductor pattern produces a thermal image for an infrared target. In some embodiments, the thermal image is irregular or circular in shape and the semi-conductor pattern includes a plurality of transversely-spaced bars having relatively wide portions outside, and relatively thin portions within, the area producing the thermal image. USSN 580,472

474264

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