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1. 发明授权

US4197875A Ball check valve 失效
标题翻译：球止回阀
公开(公告)号：US4197875A
公开(公告)日：1980-04-15
申请号：US906582
申请日：1978-05-16
申请人： Robert J. Schieferstein , Enrique L. Kilayko
发明人： Robert J. Schieferstein , Enrique L. Kilayko
IPC分类号： F16K15/04
CPC分类号： F16K15/04 , E05Y2201/20 , E05Y2201/234 , E05Y2201/458 , Y10T137/791 , Y10T137/7927
摘要： A ball check valve is described having a fluid port, a ball moveable toward and away from the port, a seating surface surrounding the port and an elastomeric sealing element. The seating surface has a conical annular surface extending radially outwardly away from the ball and an annular ridge between the port and the conical surface. The sealing element has an outer sealing surface for contacting the conical seating surface and an annular groove for receiving the seating surface ridge. On its ball side, it has an annular outer surface and an inner sealing surface for contacting the ball. A sealing element retainer contacts the outer portion of the elastomeric sealing element outer surface on its ball side to hold it in position.
摘要翻译：描述了一种球止回阀，其具有流体端口，可朝向和远离端口移动的球，围绕端口的就座表面和弹性密封元件。座面具有径向向外延伸远离球的圆锥形环形表面和端口与锥形表面之间的环形脊。密封元件具有用于接触锥形座表面的外部密封表面和用于接纳座面脊的环形槽。在其球侧，其具有用于接触球的环形外表面和内密封表面。密封元件保持器接触其球侧上的弹性密封元件外表面的外部部分以将其保持在适当位置。

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