发明名称 VALVE COVER ASSEMBLY AND METHOD OF USING THE SAME
摘要 <p>A valve cover assembly for a pump. In an embodiment, the valve cover assembly comprises a first cylindrical member having a central axis and a first throughbore. In addition, the valve cover assembly comprises a second cylindrical member coaxially disposed within the first throughbore and rotatable relative to the first cylindrical member about the central axis between a first position and a second position. In the first position, the second cylindrical member is axially translatable relative to the first cylindrical member. In the second position, the second cylindrical member is axially fixed relative to the first cylindrical member.</p>
申请公布号 WO2010025246(A1) 申请公布日期 2010.03.04
申请号 WO2009US55185 申请日期 2009.08.27
申请人 NATIONAL OILWELL VARCO, L. P.;RILEY, ANDREW, DALE;WEAVER, RANDALL, FERRAIN 发明人 RILEY, ANDREW, DALE;WEAVER, RANDALL, FERRAIN
分类号 F04B53/10;F04B39/12;F04B53/16 主分类号 F04B53/10
代理机构 代理人
主权项
地址