公开(公告)号：US20060225789A1

公开(公告)日：2006-10-12

申请号：US11101650

申请日：2005-04-08

申请人： Fred Stehling ,  Terry McWilliams ,  Roy Istre

发明人： Fred Stehling ,  Terry McWilliams ,  Roy Istre

IPC分类号： F16K27/08

CPC分类号： F16K31/46 ,  E03B9/08 ,  Y10T137/7021 ,  Y10T137/7065

摘要： Underground water valves having square operating nuts, such as but not limited to critical water valves which control different pressure zones or different demand areas, are secured by a shielding cap, each of which have a recess that receives a valve operating nut and a cylindrical projection which frustrates attempts to rotate the operating nut. When an authorized person decides to open or close one of the valves, the shielding cap is retrieved from the operating nut by a retrieving head which has the socket defined by a frustoconical recess. Within the recess are a pair of opposed pins which seat in J-shaped slots in the frustoconical projection. Upon rotating the retrieving head, the pins move into alignment with open ends of the J-shaped slots, down shank portions of the slots and abut closed ends of the slots so that the shielding cap may be pulled from the valve operating nut and withdrawn through the valve operating box. The operating nut is then exposed for rotation by a wrench having an elongated rod with a T-shaped handle and a socket which complements the valve operating nut in size and shape. After the operating nut has been rotated to open or close the valve, as desired, the shielding cap is returned to a nesting relationship with the operating nut.

摘要翻译： 具有方形操作螺母（例如但不限于控制不同压力区域或不同需求区域的关键水阀）的地下水阀门通过屏蔽盖固定，屏蔽盖具有容纳阀操作螺母和圆柱形突起的凹部 这妨碍了旋转操作螺母的尝试。 当授权人员决定打开或关闭其中一个阀时，屏蔽帽由操作螺母通过具有由截头圆锥凹槽限定的插座的回收头取回。 在凹槽内是一对相对的销，它们位于截头圆锥形突起中的J形槽中。 在旋转拾取头时，销移动与J形槽的开口端对准，槽的下端部分与槽的封闭端相接触，使得屏蔽盖可从阀操作螺母拉出并通过 阀门操作箱。 然后通过具有T形手柄的细长杆的扳手将操作螺母暴露以旋转，并且具有尺寸和形状的阀操作螺母的插座。 在操作螺母已经旋转以打开或关闭阀门之后，根据需要，屏蔽盖板返回到与操作螺母的嵌套关系。