专利名称：Impact resistant assembly发明人：Edward Monett申请号：US06/553040申请日：19831118公开号：US04507035A公开日：19850326
摘要：An impact resistant assembly is provided which comprises a longitudinal,molded shaft composed of a thermoplastic material and having screw threads at one endthereof and a planar head plate at the opposite end. Adjacent to the head plate is anupper cylindrical shaft section upon which is securely positioned a metal collar, which ispreferably provided with an enlarged metal rim, to support the head plate and adjacentcylindrical shaft section against substantial deformation during the subsequent moldingthereon of a resilient, head member which is formed from a thermosetting material. Ithas been found that the combination of the planar head plate and the adjacent metalcollar is essential to form the desired impact resistant assembly having the resilient,impact resistant head member molded thereon. The impact resistant assemblies of thisinvention are particularly suited for use in bowling alley backstops which are subjected torepeated and severe direct impacts by bowling balls of high mass.
申请人：ROLLER CORPORATION OF AMERICA
代理人：Jack B. Murray, Jr.
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