Patent ID: 7361296
Filing Date: 2008-04-22
Classification: B29C,B29L,B60B

Abstract:
1. A method of molding a wheel frame of synthetic polymeric material, the method including the steps of forming spoke members, ultimately to provide spokes for the wheel frame, by wrapping each of a plurality of elongate intensifiers of predetermined shape and size and of a resilient, thermo-expanding material in layers of reinforced, resin pre-impregnated molding material, leaving at least one end open; arranging the spoke members in a mold and integrating the spoke members with molding material such as to form a rim toward a radially outer circumference of the mold, and such as to form a hub member toward a radial center of the mold; curing the molding while in the mold under high temperature and high pressure, and causing the intensifiers to expand to compress the wrapped material around the intensifiers between an outer surface of each intensifier and a complemental mold surface; removing and reclaiming the intensifiers intact by way of the at least one open end after curing.