| 发明名称 |
CHECK/RELIEF VALVE FOR AN INFLATABLE PACKER SYSTEM |
| 摘要 |
<p>CHECK/RELIEF VALVE FOR AN INFLATABLE PACKER SYSTEM A check/relief valve intended for use in an inflatable packer system. The valve comprises a hollow cylindrical longitudinally extending inner member surrounded by a spring loaded relief piston and a spring loaded check valve poppet, all surrounded by a hollow longitudinally extending outer member.</p> |
| 申请公布号 |
CA1132881(A) |
申请公布日期 |
1982.10.05 |
| 申请号 |
CA19800363375 |
申请日期 |
1980.10.27 |
| 申请人 |
BJ-HUGHES INC. |
发明人 |
BAKER, RANDY S.;ECKMANN, GERALD C. |
| 分类号 |
E21B33/127;E21B34/06 |
主分类号 |
E21B33/127 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
