Abstract: A flexibility testing apparatus for wire or cable. Two circular, rotatable gears are mounted to a frame, one gear being a drive gear and the other being a driven gear. The driven gear is coplanar with the drive gear and the drive gear teeth are enmeshed with the driven gear teeth. Two rods are connected to the mounting holes of the drive gear and the wire or cable is attached to the rods using barrel end clamps for flexing. The driven gear can be rotated at different speeds by an electric motor or a pneumatic driving device.

Abstract: A flexibility testing apparatus for wire or cable. Two circular, rotatable gears are mounted to a frame, one gear being a drive gear and the other being a driven gear. The driven gear is coplanar with the drive gear and the drive gear teeth are enmeshed with the driven gear teeth. Two rods are connected to the mounting holes of the drive gear and the wire or cable is attached to the rods using barrel end clamps for flexing. The driven gear can be rotated at different speeds by an electric motor or a pneumatic driving device.

Abstract: A method of forming a twisted pair of wires for use with Ethernet-based networks. At least two wires are extruded with a cross-linked polyolefin insulating composition marketed under the registered trademark, EXRAD®. The wires are twisted together with a consistent lay length to form a cable. The cable is irradiated to become thermoset. Electrical properties of the extruded wire are controlled during the extrusion step and concentricity of the wire and surrounding insulation is also monitored and controlled. The cable can be jacketed to provide greater mechanical protection.