Method of lining pipelines with flow-through apparatus and liner

Details Method of lining pipelines with flow-through apparatus and liner Method of lining pipelines with flow-through apparatus and liner

1997-10-28

2000-07-25

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

138 97, 138 98, 156287, 156294, 264 3617, 264269, B29C 6336

Patent

active

060933631

ABSTRACT:
A flow-through device for use during the installation of an inverted resin impregnated flexible tubular liner in a passageway permitting the flow of fluids through the liner during the curing portion of the installation process is provided. A cylindrical body has an expandable bladder interior sealingly attached to the interior of the tubular body to form a pressure chamber is attached to the trailing end of the liner. Pressurized fluid is supplied to the chamber to inflate the bladder to close the end of the liner. The bladder allows flow through the passageway during curing of the liner, when the effluent pressure exceeds the pressure in the bladder.

REFERENCES:
patent: 4980116 (1990-12-01), Driver
patent: 5154936 (1992-10-01), Driver et al.
patent: 5393481 (1995-02-01), Wood
patent: 5399301 (1995-03-01), Menendez et al.
patent: 5597353 (1997-01-01), Alexander, Jr.

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