发明授权
- 专利标题: Self-drilling screw
- 专利标题(中): 自钻螺丝
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申请号: US12284578申请日: 2008-09-22
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公开(公告)号: US08613579B2公开(公告)日: 2013-12-24
- 发明人: Albert Loichinger , Michael Baumgartner , Sven Matthiesen
- 申请人: Albert Loichinger , Michael Baumgartner , Sven Matthiesen
- 申请人地址: LI Schaan
- 专利权人: Hilti Aktiengesellschaft
- 当前专利权人: Hilti Aktiengesellschaft
- 当前专利权人地址: LI Schaan
- 代理机构: Abelman, Frayne & Schwab
- 优先权: DE102007000848 20071011
- 主分类号: F16B25/10
- IPC分类号: F16B25/10
摘要:
A self-drilling screw (10) has a first cutting edge (21) provided exclusively in a radially inner region of the drilling tip (12), extending at a first acute angle (α1) to the longitudinal axis (L), and a second cutting edge (22) provided in radially outer region of the drilling tip (12) and extending at a second acute angle (α2) to the longitudinal axis (L), with a first enveloping conical circumferential surface (A1) which is defined by the first cutting edge (21) corresponding, with a maximum deviation of +/−10%, to a second enveloping conical circumferential surface (A2) defined by the second cutting edge (22), and with the first acute angle (α1) corresponding, with a maximum deviation of +/−5°, to the second acute angle (α2).
公开/授权文献
- US20090097941A1 Self-drilling screw 公开/授权日:2009-04-16
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