Method of making electrical power cable

Details Method of making electrical power cable Method of making electrical power cable

2006-11-16

2008-12-30

Arbes, C. J (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S828000, C156S047000, C156S048000, C156S050000

Reexamination Certificate

active

07469470

ABSTRACT:
A cable comprises at least two cores stranded together, an expanded inner jacket layer, a substantially circular metallic armor partially contacting the inner jacket to form unfilled interstices outside the inner jacket, and a polymeric outer jacket. The expanded inner jacket substantially takes the shape of the periphery of the stranded cores, providing a non-circular cross section for the expanded inner jacket. A method of producing a cable comprises providing at least two cores, expanding a polymeric material, extruding the expanded polymeric material around the cores, and allowing the expanded polymeric material to collapse onto the cores. A substantially circular metallic armor is applied, resulting in a plurality of unfilled voids between the inner jacket and the metallic armor. An outer jacket is extruded on the metallic armor.

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