发明名称 |
Cam assembly in a downhole component |
摘要 |
In one aspect of the invention, a downhole drill string component has a shaft being axially fixed at a first location to an inner surface of an opening in a tubular body. A mechanism is axially fixed to the inner surface of the opening at a second location and is in mechanical communication with the shaft. The mechanism is adapted to elastically change a length of the shaft and is in communication with a power source. When the mechanism is energized, the length is elastically changed.
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申请公布号 |
US7419018(B2) |
申请公布日期 |
2008.09.02 |
申请号 |
US20060555334 |
申请日期 |
2006.11.01 |
申请人 |
HALL DAVID R;DAHLGREN SCOTT;WILDE TYSON J |
发明人 |
HALL DAVID R.;DAHLGREN SCOTT;WILDE TYSON J. |
分类号 |
E21B10/36 |
主分类号 |
E21B10/36 |
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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