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1. 发明申请

US20040187945A1 Expandable pipe stopper 失效
标题翻译：膨胀管塞
公开(公告)号：US20040187945A1
公开(公告)日：2004-09-30
申请号：US10804824
申请日：2004-03-19
申请人： Advanced Sewer Products Limited
发明人： Michael Eric Flanagan
IPC分类号： F16L055/10
CPC分类号： F16L55/132 , F16L55/124
摘要： An expandable pipe stopper for inserting within a pipe having two rigid circular plates adapted to be inserted wholly within a pipe and an outwardly-expandable flexible seal located between peripheral surfaces of the plates so as to be capable of expanding radially. A projection is rigidly secured to or integral with a first of the plates and extends slideably through an aperture defined by the second plate. The stopper also includes a lever pivotable about an axis through the projection and cam means rigidly secured to or integral with the lever such that the lever is pivotable between a first orientation in which the flexible seal is relatively undistorted and a second orientation in which the cam means force the plates towards each other so as to axially compress and radially expand the seal for engaging with sealing contact with the wall of a pipe. A member is rigidly secured to or integral with part of a remote peripheral surface of one of the plates. The member extends from the plate such that when the pipe stopper is located within a pipe it provides a reactive force to tilting of the pipe stopper from its operative position.
摘要翻译：一种用于插入管中的可扩张管塞，其具有适于完全插入管内的两个刚性圆形板和位于板周围表面之间的向外扩展的柔性密封件，以便能够径向扩展。突起被刚性地固定到第一板上或与第一板一体地固定并且可滑动地延伸穿过由第二板限定的孔。止动器还包括可围绕通过突出部的轴线枢转的杠杆和刚性地固定到杠杆或与杠杆一体的凸轮装置，使得杠杆可在第一取向之间枢转，其中柔性密封件相对不失真，第二取向为凸轮意味着迫使板彼此朝向彼此，以便轴向地压缩和径向扩张密封件，以与与管壁的密封接触接合。构件刚性地固定到或与其中一个板的远程外围表面的一部分一体地固定。构件从板延伸，使得当管塞位于管道内时，其提供反作用力以使管塞从其操作位置倾斜。

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