| 发明名称 |
Travelling valve assembly for a fluid pump |
| 摘要 |
A travelling valve assembly for use in a sucker rod actuated fluid pump includes a ball valve actuator which engages the ball valve during the downstroke of the sucker rod to force the ball valve into an open fluid transmitting relationship with respect to its valve seat.
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| 申请公布号 |
US4599054(A) |
申请公布日期 |
1986.07.08 |
| 申请号 |
US19840643843 |
申请日期 |
1984.08.23 |
| 申请人 |
SPEARS, HARRY L. |
发明人 |
SPEARS, HARRY L. |
| 分类号 |
F04B53/12;(IPC1-7):F04B39/10;F04B7/00 |
主分类号 |
F04B53/12 |
| 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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