ELECTRIC HEATING SHEET Russian patent published in 2003 - IPC

FIELD: electrothermy; electric heating sheets included in heating appliances. SUBSTANCE: electric heating sheet used as part of heating appliances to ensure and maintain desired temperature in local area is made in the form of cloth produced by interwoven threads that has main nonconducting threads and resistive conducting threads; cloth also incorporates at least two main conducting buses and distribution buses separated from resistive conducting ones by insulating barriers of nonconducting cotton or synthetic threads wherein current interrupters are included. Cloth has at least three distribution buses; two of main conducting buses are divided into two lines with main nonconducting threads in-between. Facilities for connecting current-conducting connection wires are disposed in holes made in main nonconducting threads. The latter have linen weave with mentioned nonconducting threads. Proposed electric heating sheet has in its structure areas capable of operation at different supply voltage values. EFFECT: enhanced performance characteristics and reliability of electric heating sheet. 9 cl, 4 dwg