FLEXIBLE HEATING WIRE Russian patent published in 1995 - IPC

FIELD: heaters. SUBSTANCE: wire has core, which is made as bundled cable which wires resist to heat, current conducting cable, which is helix-shaped and arranged over core along its length, insulating layer, which is arranged over current conducting cable and which is made from fibers which resist heat. Wire has additional layer which is made from said heat- resistant fibers and twists with same period as conducting cable. Conducting cable has multiple wires and wires are arranged uniformly along perimeter of core and alters with additional insulation layer. Core and insulating layers may be manufactured from heat-resistant fibers which maximal working temperature is close to maximal working temperature of current conducting cable. Insulating layer may be used as braiding by heat-resistant fibers or as combination of braiding and coiling by heat-resistant fibers. EFFECT: increased specific heat power, equalization of temperature of current conducting cable and insulation. 4 cl, 3 dwg