Northern Telecom Limited

Nordx/cdt Inc.

Clement Gagnon

Jorg-Hein Walling

Paul P Kish

Benoit Arpin

Gavriel L Vexler

Martin L Belanger

Jorh-Hein Walling

Method of making a twisted conductor wire unit in which each wire of the pair is individually insulated. The twisted pair is provided with an outer extruded polymeric layer while a vacuum is applied to the pair at the extrusion position. The vacuum draws the polymeric layer down onto the pair and forces the insulated wires together along the length of the unit. The vacuum is insufficient to produce substantial longitudinal indentations in the polymer layer. This avoids spaces being provided between the insulated wires in the finished structure and provides a substantially constant distance between the wires to improve electrical and cross-talk characteristics.

Methods of making telecommunications cable

High frequency cable with short twist lays with the insulation thickness of conductors being different from that of others, the thickness of insulation being dependent upon twist lay length so as to achieve a desired characteristic impedance and signal attenuation.

Telecommunications cable

Growing community of inventors

Pierrefonds, Canada

Clement Gagnon