Patent ID: 6368025
Filing Date: 2002-04-09
Classification: E02D,F16L,Y10T

Abstract:
A liner assembly for sealing and reinforcing the walls of a manhole, comprising:a) a multiple ply contoured tube comprising first and second oriented plies, said first ply includes inner and outer surfaces for being impregnated with a material for rigidifying and binding said outer surface of first ply to the interior of a manhole; b) said second ply is impermeable to fluids and disposed adjacent said first ply, said second ply includes an impermeable membrane having fibers impregnated on inner and outer surfaces of said second ply but not penetrating said membrane, said outer surface of said second ply is adapted for being bonded with said inner surface of said first ply; and c) means securing said first and second plies together so that said plies are facially oriented.