发明名称 |
TRAVELLING VALVE ASSEMBLY FOR A FLUID PUMP |
摘要 |
A travelling valve assembly for use in a sucker rod activated fluid pump includes: a flow through body member having at least one rounded groove formed in the lower e nd of a central passageway of the flow through body member; and a downwardly depending membe r adapted to strike a ball valve of the valve assembly after the ball valve rises off a valve seat member of the valve assembly.
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申请公布号 |
CA2357886(A1) |
申请公布日期 |
2002.03.29 |
申请号 |
CA20012357886 |
申请日期 |
2001.09.28 |
申请人 |
SPEARS, JEFFREY D. |
发明人 |
SPEARS, JEFFREY D. |
分类号 |
E21B17/00;F04B47/02;F04B53/10;F04B53/12;(IPC1-7):E21B17/00 |
主分类号 |
E21B17/00 |
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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