| 发明名称 |
Dog locking sleeve |
| 摘要 |
A retrievable plug having a dog locking sleeve which has extensions thereon to increase the effective axial length thereof to eliminate binding of the dog locking sleeve within the plug mandrel during actuation of the plug body for the removal of the plug body from the member in which it is installed.
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| 申请公布号 |
US4412559(A) |
申请公布日期 |
1983.11.01 |
| 申请号 |
US19820396990 |
申请日期 |
1982.07.09 |
| 申请人 |
HALLIBURTON COMPANY |
发明人 |
STREICH, STEVEN G.;NICKLES, R. BENTON;TREECE, HAROLD O. |
| 分类号 |
E02B17/00;E21B33/129;F16L55/136;(IPC1-7):F16L55/12;F16L55/10 |
主分类号 |
E02B17/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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