发明授权
- 专利标题： Drill bit having radially extending cutting bits on radial legs
- 专利标题（中）： 钻头在径向腿上具有径向延伸的切屑
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申请号： US11149387申请日： 2005-06-09
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公开(公告)号： US07497282B2公开(公告)日： 2009-03-03
- 发明人: Rainer Batliner , Olaf Koch , Karl-Heinz Hofmann , Werner Britten
- 申请人： Rainer Batliner , Olaf Koch , Karl-Heinz Hofmann , Werner Britten
- 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： DE102004028098 20040609
- 主分类号： E21B10/40
- IPC分类号： E21B10/40
摘要：
A drill bit for a hammer drill for drilling in stone, concrete and the like includes a drill bit head formed as a hard material body with radial legs and having at least three radially extending cutting bits formed on the radial legs, and a centering tip in a center of the hard material body and projecting beyond one of the cutting bits, with the centering tip having concave limiting surfaces stretching between the linearly extending auxiliary cutting edges.
公开/授权文献
- US20050274551A1 Drill 公开/授权日：2005-12-15
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