发明名称 |
Method of cold forming a self-attaching female fastener element |
摘要 |
A method of cold forming a self-attaching female fastener ( 20 ) which includes deforming a fastener blank ( 120 ) having an annular pilot, ( 122 ) an annular flange ( 128 ) surrounding the pilot and a groove ( 132 ) in the flange having cylindrical walls and annular protrusions ( 152, 154 ) on the flange and pilot, then deforming the protrusions toward each other to form an annular re-entrant groove ( 32 ) having relatively inclined arcuate walls.
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申请公布号 |
US7112142(B2) |
申请公布日期 |
2006.09.26 |
申请号 |
US20040499781 |
申请日期 |
2004.10.26 |
申请人 |
WHITESELL INTERNATIONAL CORPORATION |
发明人 |
WOJCIECHOWSKI STANLEY E.;PARKER JOHN M. |
分类号 |
B21D53/24;B21H3/08;B21K1/56;B21K1/60;B21K1/64;B21K1/70;F16B37/06 |
主分类号 |
B21D53/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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