发明名称 TAPPING ASSIST FASTENING ELEMENT AND METHOD
摘要 A fastening element (10) and method that utilizes a fastener (12) or stamping which is capable of forming a fastening assembly by engagement with a self- tapping fastener (40) is disclosed. The fastening element (10) includes one or more indentations (28) formed within a portion of the circumference of an unthreaded bore (22) located within the fastening element. Each indentation has an edge (34) that can have the same helix angle or pitch as the self- tapping fastener that it is to engage to serve as a guide to properly align the fastener within the bore. The indentations also assist formation of mating threads within the element by significantly reducing the required end load to start the tapping process.
申请公布号 CA2494180(C) 申请公布日期 2008.10.07
申请号 CA20032494180 申请日期 2003.07.24
申请人 ND INDUSTRIES, INC. 发明人 HILL, JAMES ALLEN
分类号 F16B37/00;F16B25/06;F16B35/04 主分类号 F16B37/00
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