| 发明名称 |
Reverse Rotation Protection For Borehole Pumps |
| 摘要 |
A reverse rotation protection for borehole pumps is disposed in a drive head. The reverse rotation protection includes a housing and a clamping tool for securing a polished rod. The clamping tool includes at least two exchangeable contact elements with which the polished rod can be fixed releasably. |
| 申请公布号 |
US2014048246(A1) |
申请公布日期 |
2014.02.20 |
| 申请号 |
US201314063871 |
申请日期 |
2013.10.25 |
| 申请人 |
CEMIN ANGELO;DITTRICH JOCHEN;ZUBER ALEXANDER |
发明人 |
CEMIN ANGELO;DITTRICH JOCHEN;ZUBER ALEXANDER |
| 分类号 |
E21B19/12 |
主分类号 |
E21B19/12 |
| 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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