초록 ▼

A liner assembly for a manhole or passage comprises a multiple-ply, generally cylindrical tube. The outermost ply includes inner and outer surfaces and is adapted for being impregnated with material for rigidifying and bonding the outer surface of the outermost ply to a manhole or passage. The inner

A liner assembly for a manhole or passage comprises a multiple-ply, generally cylindrical tube. The outermost ply includes inner and outer surfaces and is adapted for being impregnated with material for rigidifying and bonding the outer surface of the outermost ply to a manhole or passage. The innermost ply includes inner and outer surfaces and is adapted for being impregnated with a material for rigidifying the innermost ply. An impermeable ply is disposed between the innermost and outermost plies. The impermeable ply includes an impermeable membrane having fibers impregnated on the inner and outer surfaces of the impermeable ply. The fibers of the inner surface of the impermeable ply bond with the epoxy impregnated outer surface of the innermost ply. Likewise, the fibers of the outer surface of the impermeable ply bond with the epoxy impregnated inner surface of the outermost ply, so that the manhole or passage becomes structurally reinforced.

대표청구항 ▼

[ What I claim is:] [1.] A liner assembly for sealing and reinforcing the walls of a manhole, comprising:a) a multiple ply contoured tube comprising first, second, and third oriented plies, said first ply includes inner and outer surfaces for being impregnated with a material for rigidifying and bin

[ What I claim is:] [1.] A liner assembly for sealing and reinforcing the walls of a manhole, comprising:a) a multiple ply contoured tube comprising first, second, and third 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, and said third ply includes inner and outer surfaces for being impregnated with a material for rigidifying said inner surface of said third ply so that the interior of the manhole is structurally reinforced;b) said second ply is impermeable to fluids and disposed between said first and third plies, 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 said inner surface of said second ply is adapted for being bonded with said outer surface of said second ply; andc) means securing said first, second, and third plies together so that said plies are facially oriented.