发明名称 |
Auto-fill flow valve |
摘要 |
An auto-fill flow valve for use in providing valving action in a conduit, the valve having a releasable locking mechanism which prevents the valving element from moving to seat against the valve seat until the locking mechanism is released. Also provided is a valve guide for receiving the releasable locking mechanism and holding it against the valving element.
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申请公布号 |
US4625762(A) |
申请公布日期 |
1986.12.02 |
申请号 |
US19850796665 |
申请日期 |
1985.11.08 |
申请人 |
WEATHERFORD U.S., INC. |
发明人 |
HASSANZADEH, HEDAYAT H.;MCCLUNG, III, GUY L. |
分类号 |
E21B21/10;(IPC1-7):F16K31/12 |
主分类号 |
E21B21/10 |
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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