Patent ID: 8245397
Filing Date: 2012-08-21
Classification: H01B,Y10T

Abstract:
1. In the process of twinning a pair of polymer-insulated conductors to form a twisted pair, the twist in said twisted pair being in one direction, each of said polymer-insulated conductors being formed by extruding a uniform thickness of said polymer onto said conductors, wherein said polymer-insulated conductors have a cylindrical exterior surface, the improvement comprising: improving impedance efficiency for said twisted pair as compared to polymer insulation of said uniform thickness of the same weight of said polymer by: (i) carrying out said extruding to form longitudinally running peaks and valleys in the exterior surface of each of said polymer-insulated conductors of said twisted pair of polymer-insulated conductors; (ii) backtwisting said pair of polymer-insulated conductors in the same direction prior to said twinning, said same direction being opposite to said one direction, (iii) twinning said pair of polymer-insulated conductors in said one direction, said backtwisting being effective in cooperation with said twinning to cause at least one of said peaks in said exterior surface of one of said polymer-insulated conductors to nest in at least one of said valleys in said exterior surface of the other of said polymer-insulated conductors of said pair of polymer-insulated conductors.