Pipes and tubular conduits – With closures and plugs – Inflatable
Reexamination Certificate
2005-11-01
2005-11-01
Hook, James (Department: 3754)
Pipes and tubular conduits
With closures and plugs
Inflatable
C251S061100, C137S599050, C137S240000
Reexamination Certificate
active
06959734
ABSTRACT:
A flow-through inflatable plug assembly inflatable in a pipeline. The flow-through inflatable plug assembly includes a flow-through fluid conduit and a separate “donut-shaped” inflatable member having an aperture defined therein. For operation, the flow-through fluid conduit is inserted into the aperture of the inflatable member. When the flow-through inflatable plug assembly is inflated in a pipeline, the inflatable member fills the void between the inner diameter of the pipeline and the outer diameter of the flow-through fluid conduit. Thus, the flow-through fluid conduit is sealingly captured in the aperture such that fluid flow in the pipeline is limited to passage through the flow-through fluid conduit.
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Hook James
Michael & Best & Friedrich LLP
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