A liner tube is provided for repairing a main pipe line having a lateral pipe line connected thereto. The liner tube assembly includes a liner tube impregnated with a liquid material capable of curing and hardening. The liner tube includes a gasket or junction band positioned about the juncture of the pipe lines. The gasket or bands form a tight seal between the liner tube and the pipe line. Hydrophilic containment bands are positioned over a portion of the gasket or junction band and around the main liner on either side of the juncture of the pipe lines.

A Cured In Place Pipe System includes a tubular substrate constructed of needle-punched fibers of carbon, aramid and thermoplastic. The tubular structure defines a longitudinal channel running along the length. Within the channel is an air bladder, preferably including an air duct. The tubular substrate is enclosed within a loose-fitting protective film. The tube is preferably constructed with multiple overlapping layers that aren't permanently bound, thereby allowing for circumferential expansion to accommodate various host pipe sizes, shapes, and configurations. The integrated thermoplastic has a melt/flow point of approximately 300-342 F., a cure point of approximately 330-370 F., and bonding point of approximately 372-412 F. at approximately 5-20 psi.

A method and apparatus for lining a host pipe with a shape memory polymer liner in which the liner is fed through a manufacturing assembly including a pipe tensioner, followed by a deformation tool, prior to entering the host pipe, the liner being pulled through the host pipe from a leading end, the component parts of the manufacturing assembly acting to temporarily reduce the liner outside diameter during the pulling operation, while allowing the liner to revert to at least the internal diameter of the host pipe upon removal of the pulling load. The liner being used is a shape memory polymer which exhibits the ability to return from a deformed shape to an original shape induced by an external stimulus.

A method and apparatus for lining at least one part of a wall of a conduit. In particular embodiments, a piece of material in the form of a sheet may be provided with adhesive thereupon, the sheet being curled or rolled up to allow insertion into the conduit. The curled or rolled up sheet may then be positioned inside the conduit, and once positioned inside the conduit, may at least partially uncurl or unroll to apply the sheet to the wall via the adhesive to obtain a laminate.

A pipe liner re-flaring system and method for use with a water pipe containing a pipe liner. The pipe liner re-flaring system and method generally include a compression coupling comprising a pair of female compression fittings and a dual ended male compression fitting connected between the female compression fittings. The female compression fittings are adapted to fit over and secure the lined water pipe and a second pipe to be joined with open ends of the pipe liner and the pipe to be joined in direct contact within the male compression fitting. A pipe liner expansion tool and a pipe liner flaring tool are used to expand and re-flare the open end of the pipe liner so that the pipe liner is in contact with an inner wall of the compression coupling to prevent leakage and contact between fluids flowing in the pipes and the material of the pipes and compression coupling.

A service reinforcement sleeve is disclosed with a flange and a tubular section that can be used, with epoxy, to bind a service to a structural liner such as a cured-in-pipe structural liner. This sleeve has flexible tabs with lips (defined by cutouts) on the end of the tubular section opposite the flange. This sleeve can accommodate encrustation in the service, particularly when it is located away from the bottom of the service. A method of bonding a service and structural liner using this sleeve and epoxy is also disclosed that uses a metal brush or similar device to create a seat in the liner and abrade the lower portion of the service before insertion of the sleeve.

The present invention relates to a method for rehabilitating lines, in particular sewers, shafts or the like, a curing device being activated or having been activated for curing the curable and/or curing ply, and an advancement of the curing device in the lining sleeve and in particular the power output of the curing device being controlled in an open-loop or closed-loop manner in dependence on the temperature sensed by the temperature measuring device on the outer side of the curable ply.

In an apparatus for pipeline renovation using a lining fiber tube impregnated with a reactive resin that cures under the effect of light-emitting devices, the apparatus has a head part 1 made of a transparent, temperature-resistant material, and end caps 2, 3 seal the apparatus hermetically against the outside, wherein the whole apparatus or at least its head part 1 is filled with a transparent, flame-retardant insulating fluid 5 and the apparatus contains an insert whose insulating substrates 8 are populated with high-performance light-emitting diodes 9.

A method and assembly for sealing an opening in a pipe wherein the opening is a damaged/cracked section in a length of pipe or the junction between a main pipe and a lateral pipe. The assembly includes a sealing member attached to a positioning tube such as preliner. The sealing member is combined with the preliner so that when the assembly is positioned in the main pipe, the sealing member corresponds with the opening. The sealing member is sized such that it extends along the main pipe on opposite sides of the opening. A mainline liner is installed within the preliner. In some embodiments, after the mainline liner cures and hardens, a cutter is used to cut an opening in the mainline liner, preliner, and sealing member to reinstate service to the lateral pipe. The sealing member remains in place around the periphery of the lateral pipe junction to act as a water stop at the opening.

The present disclosure relates to a method for repairing a partially collapsed pipe. The method comprises fitting a mesh stent around the outside of an actuation assembly of a pipe repair apparatus, and positioning the pipe repair apparatus within a portion of the pipe, at least a part of the portion of the pipe being partially collapsed. The method also comprises causing actuation between a retracted configuration and an extended configuration such that the partially collapsed part of the pipe changes from a partially collapsed form towards a non-collapsed form. The method also comprises removing the pipe repair apparatus from the pipe and leaving the mesh stent in the portion of the pipe.