Patent ID: 6093363
Filing Date: 2000-07-25
Classification: B29C,F16L

Abstract:
A method of lining a conduit or passageway with a curable resin impregnated flexible liner using an installation fluid medium under pressure to install the lining, comprising:providing a substantially rigid hollow tubular body with an upstream side adjacent and an inlet end, a downstream side adjacent an outlet end, and a passage therethrough anda flexible bladder sealably mounted to the interior of the tubular body for forming a pressure chamber between the tubular body and bladder to inflate the bladder for adjusting flow through passage;attaching the tubular body to one end of a liner;inflating the chamber to close the passage through the tubular body;inserting the liner with the tubular body at one end into the existing conduit;directing the installation fluid into the inserted liner;applying the installation fluid to the inserted liner to place the liner against the existing conduit;adjusting the pressure within the bladder to adjust flow through the passage to allow the installation fluid in the liner to escape through the passage to release excess pressure; andallowing the liner to cure.