A device for plugging the interior of a pipe

专利名称：A device for plugging the interior of a pipe发明人：Freeman, Eric N.,Andrew, Bill D.,Blevins, David

L.,Wilson, Buddy A.,Ralls, Gene R.,Osburn,Coy D.

申请号：EP02078530.9申请日：19941003公开号：EP1271041B1公开日：20040225

摘要：An apparatus for plugging the interior of a pipe having an internal cylindricalsurface, the pipe being penetrated by an access opening, the plugging device comprising:an upright tubular plugger housing having means at a lower end for attachment to a pipein communication with an opening in the pipeline;an elongated vertical cylindrical controlbar having a plugger at a lower end thereof, the plugger being operable to plug a pipeafter it has been inserted through an opening into the pipe, comprising: an arrangementof a collar and first and second closure plates with respective truncated sphericalsurfaces to allow swivelling of a control bar placed therethrough in order to position theplugger in the pipe. or a control bar formed of two concentric members each providedwith manipulating means.

申请人：TDW DELAWARE INC

地址：US

国籍：US

代理机构：Thomson, Paul Anthony

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