发明名称 |
Ball valve loading apparatus |
摘要 |
A ball valve assembly is provided for elimination of the tearing of the annular elastomeric seal which normally engages the periphery of such ball valve due to the movement of the valve with excessive loading imposed on the elastomeric seal. A spring pressed element engages the portion of the ball opposite the position of the annular elastomeric seal and exerts a substantially constant loading force on the ball and hence on the elastomeric seal.
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申请公布号 |
US4415037(A) |
申请公布日期 |
1983.11.15 |
申请号 |
US19810290742 |
申请日期 |
1981.08.07 |
申请人 |
BAKER INTERNATIONAL CORPORATION |
发明人 |
BROOKS, ROBERT T. |
分类号 |
E21B34/00;E21B34/06;E21B34/10;F16K5/06;(IPC1-7):E21B34/06 |
主分类号 |
E21B34/00 |
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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