Helically-wound electric cable
AssigneeNexans
InventorJonathan Nevett
Life of this patent
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Abstract
Apparatus for manufacturing a helically-wound electric cable having a winder means for winding two groups, each group having two twisted-together conductor wires, in such a manner as to form a group helix. A means is provided for varying the pitch of the group helix, having two accumulators located respectively upstream and downstream from the winder means, each accumulator having a moving drum enabling a varying length of a central line to be retained. A control means controls the position of each moving drum, where the groups are wound together at a speed that varies between two limit speeds having the same sign and where the winding is in such a manner that the pitch of the group helix varies along the cable between two limit values having the same sign.
Claims3
Apparatus for manufacturing a helically-wound electric cable, the apparatus comprising:
- winder means for winding two groups, each group having two twisted-together conductor wires, in such a manner as to form a group helix;
- a means for varying the pitch of the group helix, said means having two accumulators located respectively upstream and downstream from the winder means, each accumulator having a moving drum enabling a varying length of a central line to be retained;
- and
- a control means for controlling the position of each moving drum, wherein the groups are wound together at a speed that varies between two limit speeds having the same sign and wherein the winding is in such a manner that the pitch of the group helix varies along the cable between two limit values having the same sign.
Dependencies are inferred from the claim text.