Helically-wound electric cable
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United States of America Patent
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Mar 3, 2009
Grant Date -
Jun 12, 2008
app pub date -
Feb 5, 2008
filing date -
Feb 4, 2005
priority date (Note) -
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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.
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