B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/757
B29C 47/02 (2006.01) B29C 47/28 (2006.01) G02B 6/44 (2006.01) H01B 13/14 (2006.01)
Patent
CA 1277473
ABSTRACT OF THE DISCLOSURE Process and apparatus for making a cable with filiform elements, such as protected optical fibers or electrical conductors, in open-helix configuration and embedded in a polymeric material. The elements are fed through an extruder where the polymeric material in a plastic state is extruded thereover. The polymeric material with the elements therein is twisted in alternate directions around the cable axis as such material is advanced. The polymeric material is cooled downstream of the extruder to fix the elements in open-helix configuration. The polymeric material may be so twisted by alternately rotating a portion of the extruder in contact with the polymeric material in opposite directions or if the cable includes a central rope, by so twisting the rope in advance of the extruder with a pulley engaging the rope and rotated in a direction transverse to the plane of rotation of the pulley and around the axis of the rope.
519165
Cecchi Feliciano
Priaroggia Paolo G.
Cecchi Feliciano
Priaroggia Paolo G.
Smart & Biggar
Societa Cavi Pirelli S.p.a.
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