Abstract: A method of manufacturing a conductor assembly including the steps of winding and back twisting. The winding step includes winding an electrical conductor around a core material, the core material including at least one color differentiated portion, the core material having a longitudinal axis. The back twisting step includes back twisting the core material until the at least on color differentiated portion is in substantial alignment with the longitudinal axis.

Abstract: A resistive heating conductor having at least one strand, a first electrical insulation surrounding the resistive heating element, a sensor conductor helically disposed around the first electrical insulation and a second electrical insulation surrounding both the sensor conductor and the first electrical insulation.

Abstract: A heating element, including a sensor conductor, two resistive conductors, with one resistive conductor arranged on one side of the sensor conductor and an other resistive conductor arranged on an other side of the sensor conductor such that the sensor conductor and the two resistive conductors are substantially parallel and plastic electrical insulation surrounding the sensor conductor and each resistive conductor.

Abstract: The invention is directed to an apparatus for winding resistance wire about a filament core. The apparatus includes a plurality of wire supply reels supported by a frame, each wire supply reel having an axial bore extending therethrough and carrying a length of the wire. A filament core is threaded through each of the wire supply reels with a mechanism for directing the filament core between the wire supply reels. The filament core extends through a winding station operable to rotate one of the wire supply reels about the filament core so that wire carried on the wire supply reel is wound about the filament core. The wire supply reel is formed from a cylinder having a flange at each end. The cylinder and flanges together have a continuous slot in communication with the axial bore to permit the threaded filament to exit from the axial bore when the wire supply is exhausted.