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专利名称：Process for the manufacture of a two-part
operating piston for a disc brake
发明人：Bernd Rupprecht,Paul Antony申请号：US07/5976申请日：19910124公开号：US05136772A公开日：19920811
摘要：A process of permanently joining a cylindrical core (2) to a metallic beaker-shaped part (1) which together form an operating piston of a hydraulically operated discbrake includes inserting the core into a bore in the beaker-shaped part, and providing anaxially protruding end on the core beyond the annular end surface (7) of the beaker-shaped part having a conical surface (8) extending from its free surface (6) into the frontarea of the beaker-shaped part (1). A wedge-shaped annular groove (11) is produced inthe beaker-shaped part (1), whereby material is radially displaced inwardly so that itabuts against the conical surface (8) of the core to retain the core in the beaker-shapedpart.
申请人：DEUTSCHE PERROT-BREMSE GMBH
代理机构：Fleit, Jacobson, Cohn, Price, Holman & Stern
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