Pipes and tubular conduits – With closures and plugs – Inflation stem type
Patent
1994-08-05
1995-08-01
Scherbel, David A.
Pipes and tubular conduits
With closures and plugs
Inflation stem type
138 97, 295221, F16L 5510
Patent
active
054373107
ABSTRACT:
A wedge and ring-type plug assembly for plugging a heat exchanger tube to provide a leak resistant seal. The plug assembly is designed to reduce the effect of friction forces so that the tapered elongate wedge can be displaced through the compressible ring with a relatively low amount of force.
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Expando Seal Tools, Inc.
Hook James F.
Scherbel David A.
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