发明公开
- 专利标题: PROCESS FOR MANUFACTURING A CAPTIVE SCREW
- 专利标题(中): 法,螺丝生产情况
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申请号: EP99915334申请日: 1999-04-08
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公开(公告)号: EP1117501A4公开(公告)日: 2002-09-06
- 发明人: ELLIS THOMAS J , MCCORMACK EDWARD A , DICKERSON HARRY L
- 申请人: SOUTHCO
- 专利权人: SOUTHCO
- 当前专利权人: SOUTHCO
- 优先权: US5973598 1998-04-14
- 主分类号: B23P19/08
- IPC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 ; B23G5/00 ; B21H3/02
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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