Device for plugging the interior of a pipe

专利名称：Device for plugging the interior of a pipe发明人：Freeman, Eric N.,Blevins, David L.,Ralls, Gene

R.,Andrew, Bill D.,Wilson, Buddy A.,Osburn,Coy D.

申请号：EP94307213.2申请日：19941003公开号：EP0681139A2公开日：19951108

摘要：An apparatus for plugging the interior of a pipe that is penetrated by an axisopening including an upright tubular plugger housing attachable at its lower end to havecommunication with the interior of the pipe through the opening. An elongated verticalcylindrical control bar is provided with a plugger at its lower end, the plugger beingpositioned through the opening into the interior of the pipe to close against further flowof fluid through the pipe. A jack is affixed to the plugger housing upper end andtelescopically receives the control bar, the jack being pivotally affixed to the housing sothat the control bar, having a plugger on the lower end thereof, can be pivoted relativeto the housing and thereby relative to the pipe for proper positioning of the plugger inthe pipe. The jack serving to axially downwardly or upwardly advance the control bar sothat a plugger can be installed or removed from a pipe, the jack providing force toexpand a sealing cup on the plugging head to seal the inside of the pipe. A control barclamp and latch are used for locking the plugger head in the plugging position.

申请人：TDW DELAWARE, INC.

地址：1100 Market Street Suite 780 Wilmington Delaware 19801 US

国籍：US

代理机构：Thomson, Paul Anthony

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