发明名称 Ring and process and device for producing the same
摘要 The invention relates to a ring (2), in particular a flange ring for pipe connections, having a centrally arranged hole (5) which, in the region of one edge, has a calibration (7) which engages radially over said edge, approximately in the form of a ball surface or the like. Said ring can be produced in a simple and cost-effective manner in that it is designed as a punched blank with a stamped-on calibration (7). <IMAGE>
申请公布号 DE3111666(A1) 申请公布日期 1982.10.07
申请号 DE19813111666 申请日期 1981.03.25
申请人 KLIMMER,ERNST 发明人 KLIMMER,ERNST
分类号 B21D53/16;F01N13/18;(IPC1-7):F16S5/00;F16L23/00 主分类号 B21D53/16
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