发明名称 |
VALVE |
摘要 |
A ball type valve in which the ball is rotated by the cooperation of multiple tracks and multiple track followers. Also, a pressure operated permanent lock-out is disclosed. Pressure applied to a piston withdraws an expander from under a lock ring to release a lock-out sleeve. Continued application of pressure drives the sleeve to valve lock-open position where the sleeve is permanently locked to the housing. |
申请公布号 |
GB2149834(A) |
申请公布日期 |
1985.06.19 |
申请号 |
GB19840020122 |
申请日期 |
1984.08.08 |
申请人 |
* OTIS ENGINEERING CORPORATION |
发明人 |
JOHN C * GANO;GARY ALLEN * KOHN |
分类号 |
E21B34/00;E21B34/02;E21B34/10;(IPC1-7):E21B34/00 |
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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