| 发明名称 |
Gripping member for well packer |
| 摘要 |
A unitary tubular cylindrical gripping member for well packers is disclosed having variable angled gripping teeth formed thereon and arranged to provide constant gripability of the member in well casings having different internal diameters.
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| 申请公布号 |
US4029147(A) |
申请公布日期 |
1977.06.14 |
| 申请号 |
US19750625355 |
申请日期 |
1975.10.23 |
| 申请人 |
DRESSER INDUSTRIES, INC. |
发明人 |
JETT, MARION BARNEY |
| 分类号 |
E21B23/01;E21B33/129;(IPC1-7):E21B23/00 |
主分类号 |
E21B23/01 |
| 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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