| 发明名称 |
ENGINE SPEED LIMITER FOR A HOIST. |
| 摘要 |
<p>A mobile service rig (10) for wells includes a hoist (12) powered by an internal combustion engine (32). In response to the hoist exerting a predetermined lifting force, the lifting force (14) is limited by automatically limiting or reducing the speed of the engine.</p> |
| 申请公布号 |
MXPA05003511(A) |
申请公布日期 |
2005.06.03 |
| 申请号 |
MX2005PA03511 |
申请日期 |
2003.10.02 |
| 申请人 |
KEY ENERGY SERVICES, INC. |
发明人 |
NEWMAN, FREDERIC M. |
| 分类号 |
B66D1/58;E21B7/02;E21B19/00;E21B41/00;(IPC1-7):E21B7/02 |
主分类号 |
B66D1/58 |
| 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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