Patent 7491889 was granted and assigned to Nexans on February, 2009 by the United States Patent and Trademark Office.
An improved electrical line comprising an electrical conductor (5) and a layer of thermoplastic material wherein the layer consists of at least one inner layer (6) and one outer layer (7) and the outer layer (7) comprises a lubricant which has migrated from the inner layer (6) into the outer layer (7).