发明名称 FLUID-FLOW ISOLATION AND CONTROL APPARATUS
摘要 <p>Fluid-flow control apparatus and method are disclosed by which magnetically-positionable elements within a rigid body can be externally manipulated using a controlling source of magnetic flux. The relative attractive forces which bias internal magnetic elements into normally-closed sealing engagement are substantially altered by repositioning the magnetic elements in response to the controlling magnet flux. Complete sealing or isolation against back flow through the valve under conditions of net positive outlet pressure is inhibited by the internal double-acting sealing elements which respond in unified manner to the controlling magnetic flux.</p>
申请公布号 EP0256113(B1) 申请公布日期 1990.10.24
申请号 EP19870901807 申请日期 1987.02.04
申请人 EIDSMORE, PAUL GEORGE 发明人 EIDSMORE, PAUL GEORGE
分类号 E03B7/07;E03B;E03B1/00;F15B;F16K;F16K17/24;F16K31/08 主分类号 E03B7/07
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