Plastic conduit with integral pull wire

Details Plastic conduit with integral pull wire Plastic conduit with integral pull wire

H - Electricity

02

G

189/15, 189/28

H02G 1/08 (2006.01) H02G 3/04 (2006.01) H02G 9/06 (2006.01)

Patent

CA 1302310

ABSTRACT OF THE DISCLOSURE A plastic conduit with an integral pull wire avoids having to use a fish wire to pull electrical conductors through the conduit. An improved process of extruding plastic conduit comprises feeding a separate flexible wire or cord element through an aperture at the center of the plastic extruder die within the extruded conduit in the same direction and speed as the extruded conduit. An extrusion device has a plastic extrusion die with a central mandrel supported on transverse webs within the die exit, an aperture through one of the webs having a bend therein so the aperture exits at the center of the mandrel and in line with the die, feed rolls for the flexible wire or cord and speed control for the feed rolls to ensure the flexible wire or cord is fed at the same speed as the conduit is extruded.

542784

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