发明授权
- 专利标题: Rock drill
- 专利标题(中): 摇滚钻
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申请号: US951294申请日: 1992-08-17
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公开(公告)号: US5265688A公开(公告)日: 1993-11-30
- 发明人: Gerhard Rumpp , Josef Obermeier , Josef Fuenfer
- 申请人: Gerhard Rumpp , Josef Obermeier , Josef Fuenfer
- 申请人地址: LIX Schaan
- 专利权人: Hilti Aktiengesellschaft
- 当前专利权人: Hilti Aktiengesellschaft
- 当前专利权人地址: LIX Schaan
- 优先权: DEX4011441 19900409
- 主分类号: E21B10/44
- IPC分类号: E21B10/44 ; E21B10/56 ; E21B10/58
摘要:
A rock drill has an axially extending shank (1) with a drill head (2) on one end. The drill head (2) has an end face (3) with a cutting blade (4) and cutting pins (5) extending outwardly from the end face in the drilling direction. The cutting blade (4) extends diametrically across the end face and projects radially outwardly from the drill head (2) and axially outwardly from the end face (3). The cutting pins (5) are arranged on a diameter of the drill head which forms an acute angle relative to the cutting blade (4). Due to the acute angle between the cutting pins and the diametrically arranged cutting blade, removal grooves extending axially from the end face can be enlarged.
公开/授权文献
- USPP4460P Rose plant 公开/授权日:1979-09-18
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