| 发明名称 |
Bohrwerkzeug, insbesondere Gesteinsbohrer |
| 摘要 |
The invention relates to a drilling tool, especially a rock drill. According to the invention, the helical stem consists of a polygonal rod without wings or ribs. Said rod is twisted to form a cutting twist. The clamping stem is configured for accommodation in a hammer drill machine.
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| 申请公布号 |
DE19722518(A1) |
申请公布日期 |
1998.12.03 |
| 申请号 |
DE19971022518 |
申请日期 |
1997.05.30 |
| 申请人 |
HAWERA PROBST GMBH, 88212 RAVENSBURG, DE |
发明人 |
PEETZ, WOLFGANG, DIPL.-ING., 88273 FRONREUTE, DE |
| 分类号 |
E21B10/44;(IPC1-7):B28D1/14;B23B51/02 |
主分类号 |
E21B10/44 |
| 代理机构 |
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