发明名称 |
SELF-ATTACHING FEMALE FASTENERS AND METHOD OF FORMING FEMALEFASTENER ELEMENTS |
摘要 |
A method of forming a female fastener including rolling a body portion strip having a midportion and flange portions on opposed sides of the midportion, piercing spaced openings through the midportion, cutting the strip to length between the openings, cold forming a separate generally cylindrical pilot portion having a length greater than the width of the midportion and a diameter greater than the opening through the midportion, preferably includi ng radial splines, and press fitting the pilot portion through the opening in t he midportion. The self-attaching female fastener thus includes a rectangular body portion and a generally cylindrical pilot portion having an end face spaced above a plane of the midportion and may be formed of a harder metal than the body portion.
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申请公布号 |
CA2496014(A1) |
申请公布日期 |
2004.05.06 |
申请号 |
CA20032496014 |
申请日期 |
2003.10.23 |
申请人 |
FABRISTELL PRODUCTS, INC. |
发明人 |
WARD, RICHARD P.;VRANA, JOHN J. |
分类号 |
B21D53/24;B21K1/66;B21K1/70;B23P15/00;B23P19/06;F16B4/00;F16B37/00;F16B37/06;(IPC1-7):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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