System and method for installing formed-in-situ localized repair of pipes and conduits
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United States of America Patent
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Sep 16, 2003
Grant Date -
N/A
app pub date -
Jun 2, 2000
filing date -
Dec 2, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
A method of installing a formed-in-situ repair in a pipe 40 comprising locating a sleeve of reinforcement material impregnated with a settable resin within a tube 36 of soft, impervious sheet material; everting the tube into said pipe such that the sleeve is carried into a desired zone and brought into intimate contact with its inner surface; guiding the point of eversion 43 of said tube through directional changes in the pipe with guiding means 21; maintaining the inflation of the everted tube while passing a heated fluid medium through its interior to accelerate curing of the settable resin; and, when the settable resin is cured, de-everting the tube with withdrawal means 19 and withdrawing it from the pipe, leaving the sleeve of reinforcement material in place within it.
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