Method and device for repairing a tubular conduit

Details Method and device for repairing a tubular conduit Method and device for repairing a tubular conduit

1994-03-15

1996-02-13

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Repairing or restoring consumer used articles for reuse

138 97, 138 98, 156287, 156294, 264516, 264269, 425503, B29C 6336

Patent

active

054909643

ABSTRACT:
A method for repairing a tubular conduit by lining the inner wall of the tubular conduit with a tubular liner bag impregnated with thermosetting liquid resin, having the steps of: (a) everting the tubular liner bag in the tubular conduit; (b) closing the open end of the tubular liner bag with a stationary lid thereby forming a closed space inside the tubular liner bag and the lid; (c) inserting a heat-resistive hose into the closed space through the lid; (d) inflating the tubular liner bag by charging a pressurized fluid into the closed space; and (e) supplying hot water via the heat-resistive hose to thereby heat and harden the liner bag; wherein the heat-resistive hose is slidably inserted through the lid, and is connected to the lid via a flexible inflatable sealing device such that when the pressurized fluid is charged into the closed space the sealing device is pressed to inflate externally from the lid thereby forcing the heat-resistive hose to slide externally.

REFERENCES:
patent: 5167901 (1992-12-01), Driver et al.
patent: 5225121 (1993-07-01), Yokoshima
patent: 5358359 (1994-10-01), Long, Jr.

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