| 发明名称 |
DOWNHOLE TRIGGER APPARATUS |
| 摘要 |
A selectively operable timing device is in operable communication with a force reducing mechanism. The timing device restrains an effect of an external force on a tool member through the force reducing mechanism.
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| 申请公布号 |
US2009071642(A1) |
申请公布日期 |
2009.03.19 |
| 申请号 |
US20080325662 |
申请日期 |
2008.12.01 |
| 申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
MOYES PETER BARNES |
| 分类号 |
E21B23/00;E21B23/06;E21B41/00 |
主分类号 |
E21B23/00 |
| 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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