| 发明名称 |
SELF ALIGNING MUD SAVER VALVE SEAT |
| 摘要 |
<p>A mud saver valve is constructed so that the valve seats self align preventing the loss of fluid when the valve is in the closed position. One or both seats can skew their longitudinal axes to get the alignment.</p> |
| 申请公布号 |
CA2771350(A1) |
申请公布日期 |
2011.02.24 |
| 申请号 |
CA20102771350 |
申请日期 |
2010.08.16 |
| 申请人 |
HART, TACE PARLEY;MULLINS, ALBERT AUGUSTUS |
发明人 |
HART, TACE PARLEY;MULLINS, ALBERT AUGUSTUS |
| 分类号 |
E21B34/14;E21B21/10;E21B34/10;E21B43/12;F16K15/00 |
主分类号 |
E21B34/14 |
| 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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