发明授权
- 专利标题: Drill head
- 专利标题(中): 钻头
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申请号: US10898881申请日: 2004-07-26
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公开(公告)号: US07163070B2公开(公告)日: 2007-01-16
- 发明人: Roland Gienau , Wolfgang Ludwig , Erich Leibhard
- 申请人: Roland Gienau , Wolfgang Ludwig , Erich Leibhard
- 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: DE10334610 20030729
- 主分类号: E21B10/36
- IPC分类号: E21B10/36
摘要:
A drill head for use in drilling bores in mines and tunnels has a bit and at least one suction opening (5) for removing drillings and having a crushing profile.
公开/授权文献
- US20050051365A1 Drill head 公开/授权日:2005-03-10