| 发明名称 |
DRILLING TARGET-ORIENTED HOLES |
| 摘要 |
A directable boring bar 1 has an inner rotatable portion 3 and an outer stationary portion 4 mounting inclination meters 14. Control rails 9 extending along the bar 1 are moved outwards by hydraulic rams 10, 11 to control the direction of the bar. Hydraulic pressure and electrical power are generated from the rotation of the inner portion 3. <IMAGE> |
| 申请公布号 |
AU536279(B2) |
申请公布日期 |
1984.05.03 |
| 申请号 |
AU19800065860 |
申请日期 |
1980.12.24 |
| 申请人 |
BERGWERKSVERBAND GMBH. |
发明人 |
HEINZ WALLUSSEK;MARTIN WIEBE;THOMAS RODER |
| 分类号 |
E21B4/02;E21B4/04;E21B4/20;E21B7/06;E21B41/00;E21B47/022;(IPC1-7):E21B7/08 |
主分类号 |
E21B4/02 |
| 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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