Pipes and tubular conduits – With closures and plugs – Laterally insertable
Patent
1994-05-05
1996-07-02
Scherbel, David
Pipes and tubular conduits
With closures and plugs
Laterally insertable
138 89, F16L 5510
Patent
active
055312500
ABSTRACT:
An apparatus for plugging the interior of a pipe that is penetrated by an axis opening including an upright tubular plugger housing attachable at its lower end to have communication with the interior of the pipe through the opening. An elongated vertical cylindrical control bar is provided with a plugger at its lower end, the plugger being positioned through the opening into the interior of the pipe to close against further flow of fluid through the pipe. A jack is affixed to the plugger housing upper end and telescopically receives the control bar, the jack being pivotally affixed to the housing so that the control bar, having a plugger on the lower end thereof, can be pivoted relative to the housing and thereby relative to the pipe for proper positioning of the plugger in the pipe. The jack serving to axially downwardly or upwardly advance the control bar so that a plugger can be installed or removed from a pipe, the jack providing force to expand a sealing cup on the plugging head to seal the inside of the pipe. A control bar clamp and latch are used for locking the plugger head in the plugging position.
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Andrew Bill D.
Blevins David L.
Freeman Eric N.
Osburn Coy D.
Ralls Gene R.
Hook James F.
Scherbel David
TDW Delaware Inc.
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