| 发明名称 |
Device for forming boreholes on soil, has optical path for measuring device and marking sight provided within boring hammer |
| 摘要 |
<p>An optical path (15) for a measuring device (17) and a marking sight (16) is provided within a boring hammer (8). An impact piston (9) around the hammer reciprocates in direction parallel to the optical path.</p> |
| 申请公布号 |
DE102005011968(A1) |
申请公布日期 |
2006.10.05 |
| 申请号 |
DE20051011968 |
申请日期 |
2005.03.14 |
| 申请人 |
BOHRTEC GMBH |
发明人 |
UFFMANN, HANS-PETER;NIEDER, GREGOR |
| 分类号 |
E21B7/04;E21B7/20 |
主分类号 |
E21B7/04 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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