发明名称 |
PROCESS FOR MANUFACTURING A CAPTIVE SCREW |
摘要 |
A method of making a knob (30) and ferrule (50) for a captive screw (10) is disclosed, the knob (30) integrally attached to the screw (10), the ferrule (50) attachable to a panel (60). The method of making the knob (30) includes providing an aluminum alloy base metal for the knob (30), pressing by cold-forming the base material into a generally cylindrical cup-shaped article (32) using at least one pressing operation, the cup having a generally cylindrical side wall (33), removing any base material situated outside of the perimeter of the cup-shaped article (32) and providing a hole in the bottom of the cup (32), coaxial with the hollow cylindrical walls (33) of the cup (32), thereby forming the knob (30).
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申请公布号 |
WO9952666(A1) |
申请公布日期 |
1999.10.21 |
申请号 |
WO1999US07730 |
申请日期 |
1999.04.08 |
申请人 |
SOUTHCO, INC. |
发明人 |
ELLIS, THOMAS, J.;MCCORMACK, EDWARD, A.;DICKERSON, HARRY, L. |
分类号 |
B23P19/08;B21D22/00;B21D22/20;B21D28/00;B21D53/00;B21G5/00;B21J5/00;B21K1/00;B21K21/02;B23G9/00;F16B5/02;F16B41/00;(IPC1-7):B23G5/00;B21H3/02 |
主分类号 |
B23P19/08 |
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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