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US 4,761,129 AGranted
Device for changing color during the extrusion of a sheath around a conductor
AssigneeSwisscab E.A. Schoen S.A.
InventorsRobert Aste, Peter Bloch
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AssigneeSwisscab E.A. Schoen S.A.
InventorsRobert Aste, Peter Bloch
Estimating the term…
Apparatus for extruding a sheath of synthetic material around a conductor, comprising an extruder head with two inlet conduits respectively connected to two orifices traversed by the conductor, and distributor means for selectively connecting the inlet conduits to a first and second extruder, the distributor means including a distributor communicating with the two extruders and to a first and second inlet conduit of the extruder head, and means for control of the distributor, the distributor having a mobile member which includes at least one pair of direct channels respectively providing communication of the first extruder with the first inlet conduit and of the second extruder with the second inlet conduit in a predetermined position of the mobile member, and a pair of inverted channels respectively providing communication of the first extruder with the second inlet conduit and of the second extruder with the first inlet conduit in another position of the mobile member. Different colors of synthetic material may be supplied to the respective inlet conduits, and the colors may be changed during production without wasting material.
Apparatus for extruding a sheath of synthetic material around a conductor, said apparatus comprising an extruder head provided with at least two inlet conduits for synthetic material respectively connected to two orifices traversed by said conductor to permit extruding around said conductor a sheath formed of two layers of said material, and distributing means for selectively connecting said inlet conduits to a first and a second extruder for synthetic material, said distributing means comprising a distributor communicating with said two extruders and to a first and a second inlet conduit of said extruder head and means for control of said distributor, said distributor being provided with a mobile member which includes at least one pair of direct channels respectively providing communication of said first extruder with said first inlet conduit and of said second extruder with said second inlet conduit in a predetermined position of said mobile member, and a pair of inverted channels respectively providing communication of said first extruder with said second inlet conduit and of said second extruder with said first inlet conduit in another position of said mobile member.
Dependencies are inferred from the claim text.