Abstract: The present invention relates to a pipe liner assembly for sealing and rehabilitating the walls of an underground structure. The system includes an inflation bladder, a woven liner and a non-porous membrane. The woven liner has an inner surface adjacent the inflation bladder, an outer surface, and longitudinal edges. The liner also has a first fastener system adjacent the liner edges for releasably securing the liner edges so that the liner surrounds the bladder. The non-porous membrane is adjacent the outer surface of the liner. The membrane has longitudinal edges, and a second fastener system adjacent the membrane edges for releasably securing the membrane edges so that the membrane surrounds the liner. The present invention is also directed to an apparatus for curing a resin impregnated pipe liner, as well as methods of making and installing a reinforcing liner for an underground structure.

Abstract: The present invention relates to a pipe liner assembly for sealing and rehabilitating the walls of an underground structure. The system includes an inflation bladder, a woven liner and a non-porous membrane. The woven liner has an inner surface adjacent the inflation bladder, an outer surface, and longitudinal edges. The liner also has a first fastener system adjacent the liner edges for releasably securing the liner edges so that the liner surrounds the bladder. The non-porous membrane is adjacent the outer surface of the liner. The membrane has longitudinal edges, and a second fastener system adjacent the membrane edges for releasably securing the membrane edges so that the membrane surrounds the liner. The present invention is also directed to an apparatus for curing a resin impregnated pipe liner, as well as methods of making and installing a reinforcing liner for an underground structure.

Abstract: 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.

Abstract: 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.

Abstract: An apparatus and method for inflating and curing a resin impregnated liner include a resin impregnated liner lowered into an underground structure so that a portion of the liner extends beyond the structure. The protruding portion of the liner is then sealed. Pressurized air and steam are simultaneously admitted into the liner so that the liner inflates and engages the structure. Air and steam continue to be admitted into the liner for a period sufficient to cure the resin while maintaining the liner engaged with the structure.

Abstract: A liner assembly for a manhole comprises a multiple ply generally cylindrical tube. The outermost ply is adapted for being impregnated with material for rigidifying and bonding the outermost ply to a manhole. The innermost ply is adapted for being impregnated with a material for rigidifying the innermost ply so that the manhole becomes structurally reinforced. An impermeable ply is disposed between the innermost and outermost plies. The outermost, innermost, and impermeable plies are secured together so that the plies are maintained facially oriented. Each of the plies is cut along a first end of the tube for providing a fluid flow path when the assembly is installed in the manhole and an opposite end of the tube is fully opened.

Abstract: A combined anaerobic and aerobic exerciser has a ground supported frame with a forward end and a rearward end. The seat on which the user sits is adjustably mounted to the rearward end. A flywheel is rotatably mounted to the rearward end rearwardly of the seat. A pedal mechanism is operatively connected to the flywheel by means of a chain so that the flywheel will rotate when the pedals are operated by the user. First and second handle bars are pivotally mounted to the forward end and are adapted for independent pivoting about a common axis. Cylinder and piston assemblies are mounted between the frame and the lower ends of the handle bars in order to resist pivoting of the handle bars.