System for molding corrugated pipe
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United States of America Patent
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app pub date -
Feb 23, 2004
filing date -
Nov 18, 2003
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Abstract
Carriage assembly mounted molds are paired along a production system axis at a receiving region. Each carriage assembly is configured with an axially inwardly depending threaded connector nut configured to engage a translational screw moving the mold sets in registry about an extrusion die to establish a dynamic forming tunnel. Each mold of a mold set is configured having an internal mold cavity with mold crests spaced apart to define a sequence of vacuum support regions. A sequence of annular insert components are positioned over the vacuum support regions to form mold cavities and to define vacuum cavities.
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