| 发明名称 |
Drill has tubular drive shaft connected by coupling ring to drill shaft, coupling ring being fitted with external sealing sleeve and sealing ring between sleeve and drive shaft |
| 摘要 |
<p>The drill has a tubular drive shaft (20) which is connected by a coupling ring (30) to the drill shaft (10). The coupling ring is fitted with an external sealing sleeve (51) and a sealing ring (52) which seals the sleeve against the drive shaft.</p> |
| 申请公布号 |
DE102007019168(A1) |
申请公布日期 |
2008.10.23 |
| 申请号 |
DE20071019168 |
申请日期 |
2007.04.20 |
| 申请人 |
GEISLER & KUPER GMBH DIAMANTWERKZEUGE |
发明人 |
GEISLER, BERND |
| 分类号 |
E21B17/046;B23B31/113 |
主分类号 |
E21B17/046 |
| 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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