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Plural-component, composite-material highway dowel bar fabrication methodology

  • US 9,440,400 B2
  • Filed: 09/21/2013
  • Issued: 09/13/2016
  • Est. Priority Date: 02/04/2012
  • Status: Active Grant
First Claim
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1. A plural-component, composite-material, highway dowel-bar making method comprisingpreparing an elongate core train having a long axis, and possessing, along that axis, endo-abutting, longitudinally alternating, (a) elongate, cylindrical cores, each core having a common, constant cross section at every location along the long axis, and (b) elongate, but shorter, cylindrical, fibre-reinforced plastic-resin end-plug blanks having opposite ends, and each end-plug blank having a constant cross section at every location along the long axis matching the constant cross section of the cores,using the core train as a longitudinally moving mandrel, pultrusion-forming a fibre-reinforced plastic-resin sleeve continuously and bondedly around the core train so as to produce a pultrusion-result, intermediate, dowel-bar product, andfollowing said pultrusion-forming, cross-cutting the intermediate, dowel-bar product at longitudinal locations therein which are intermediate the opposite ends of end-plug blanks, and thereby forming completed dowel bars.

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