Patent ID: 6140587
Filing Date: 2000-10-31
Classification: H01B

Abstract:
An electrical high frequency data transmission cable for use in an adverse environment, comprising:an extruded central core of a stiff, non-compressible polymeric material,an extruded outer core covering the central core and having two diametrically opposed helical grooves, each having a semi-circular bottom and side walls that diverge outwardly from the bottom of the groove,two insulated electrical conductors each of which being positioned in one of the helical grooves so that the conductors are substantially diametrically opposed and equally spaced from each other along the length of the outer core and each conductor is free to move longitudinally independent of the other,an extruded first tube of dielectric material covering the outer core and the insulated conductors,a shield of highly conductive material encasing the first dielectric layer to shield the insulated conductors from external electrical influences and tune the electrical characteristics of the cable, andan extruded jacket of dielectric material encasing the shield.