Pipes and tubular conduits – With closures and plugs – Inflatable
Patent
1995-06-02
1996-08-20
Stinson, Frankie L.
Pipes and tubular conduits
With closures and plugs
Inflatable
138 89, F16L 5512
Patent
active
055469914
ABSTRACT:
An inflatable fabric bag plug for sealing low pressure pipelines. The bag plug has a body portion constructed of a coated fabric material and includes a plug body portion, main seam cap strips, first and second end seam cap strips and a plurality of sealing strips which are bonded over all internally and externally exposed fabric edges to prevent leakage when the plug is inflated. The body portion has first and second end closures and opposing tethering assemblies which are bonded over the end closures and to the plug body portion. An inflation assembly and a pressure gauge assembly are provided for inflating and deflating the plug as well as monitoring the plug during use. Bypass assemblies are provided to permit the passage of fluids through the bag plug when inflated in a pipeline.
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Cherne Industries Incorporated, CHERNE Single-Size TEST-BALL Plug, 1992, Product Sheet, 1 page.
Mathison Allen D.
Smith Randy D.
Cherne Industries Incorporated
Eggink Anthony G.
Hook James F.
Stinson Frankie L.
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