Patent 7663058 was granted and assigned to Nexans on February, 2010 by the United States Patent and Trademark Office.
The present invention relates to a helically-wound electric cable comprising at least two groups that are wound-together so as to form a group helix, each group comprising at least two twisted-together conductor wires. In the cable of the invention, the pitch of the group helix varies along the helically-wound electric cable between two limit values having the same sign.