专利名称：Method and apparatus for maintaining the
concentricity of a molded pipe
发明人：Sheldon A. Canfield申请号：US05/954491申请日：19781025公开号：US04206164A公开日：19800603
摘要：A pipe insulation is made between an inner and outer mold core from a liquidwhich foams and then forms a solid. The foaming action may cause movement in the innermold which is detected and then adjusted accordingly to maintain concentricity betweenthe inner and the outer wall of the pipe insulation. The insulation may be usedalternatively as pipe.
申请人：OWENS-CORNING FIBERGLAS CORP
代理人：Ronald C. Hudgens,Patrick P. Pacella,Oliver E. Todd, Jr.
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