Abstract: A liner or prepreg for installation in pipelines includes a deformable circular knitted fabric impregnated with synthetic resin, which is preferably UV-curable.

Abstract: A method for sealing a leak in a pipeline used to transport fluid includes positioning a sealing device within the pipeline, moving the sealing device through the pipeline to a leak location, and internally generating an inflation pressure to inflate the sealing device to substantially cover a leak opening and limit release of the fluid from the pipeline.

Abstract: A method and system for evaluating the interior surface and exterior wall conditions of a pipeline while also dynamically installing a repair coating in a pipeline, such as an underground water pipeline. The system is towed into the pipeline and drawn back therethrough. As the system is drawn back, one module in the system evaluates the surface condition of the interior of the pipe and another module evaluates the structural condition of the wall of the pipe. Based on the evaluation data obtained from the two modules an epoxy material is applied to the interior surface of the pipe using a spin cast machine that is drawn behind the two modules. Preferably, a layer of epoxy is applied to the interior surface of the host pipe to the appropriate thickness based on the pipe condition as determined by the two modules.

Abstract: A pipeline regeneration pipe, with which necessary strength can be ensured by way of the inserted regeneration pipe itself without the necessity of grouting, includes an inner wound flexible resin layer 5d which constitutes the inner layer of a straight pipe part 5b, an outer wound flexible resin layer 5e laminated on the outer surface of the inner wound flexible resin layer and constitutes the outer layer of the straight pipe part, and a protruded rim part 5c helically formed on the outer surface of the outer wound flexible resin layer, the protruded rim part 5c being configured by a rigid-resin core 5g helically wound, and a core-covering part 5f integrated with the outer wound flexible resin layer so as to surround the rigid-resin core.

Abstract: Provided is a restoration pipe pulling-in method which can easily determine whether pilling-in of a restoration pipe is possible wherein the restoration pipe has a diameter as much as large relative to a deteriorated drainage channel, and which can pulling a restoration pipe into a sewer pipe wherein the gap between the restoration pipe and the sewer pipe is shorter.

Abstract: A tubular liner for rehabilitating sewers has a reinforcing layer being expandable in the circumferential direction and formed of fiber rovings and impregnated with a curable reactive resin. The tubular liner has an outer tubular film which encloses the reinforcing layer and is formed of a material that can be expanded radially. A longitudinal pull strap is provided and absorbs the tensile forces acting on the tubular liner when the tubular liner is inserted into the sewer. The tubular film has a laminated nonwoven layer on the side facing the reinforcing layer. The longitudinal pull strap is located between the nonwoven layer and the reinforcing layer and is in immediate contact with the outer side of the reinforcing layer and the nonwoven layer. The longitudinal pull strap has a width of less than 50% of a length of the outer circumference of the reinforcing layer.

Abstract: A method for repairing a component with a leak are disclosed. In an embodiment, a component having at least one fluid flow path with a leak therein is provided. The component may be made of a first material. A second material may be introduced into the fluid flow path, and propelled into the location of the leak in the flow path. Once there, the second material is melted and solidified, forming a plug that occludes the leak.

Abstract: A method of delivering a concentrated quantity of sealing elements to a leak site in a vessel includes deploying a flexible body of material and at least one sealing element into fluid flowing within the vessel upstream of the leak site. The body of material transports the sealing elements through the vessel to the leak site where the body of material is drawn to the leak by fluid flow created by a pressure differential at the leak site. The sealing element(s) are constrained by the body of material at the leak site such that the sealing element(s) become(s) entrained within the leak.

Abstract: The pipeline leak detection and repair device is an autonomous machine that travels through a pipeline to detect very small leaks therein. The device also repairs those leaks with an on-board repair component. The repair occurs nearly simultaneously with the leak detection as the device passes the leak. The device includes a plurality of thin, flexible sensor leaves in a radial array. The leaves are positioned to place them nearly in contact with the inner surface of the pipe wall. Each leaf includes two sensors installed on its opposite surfaces. Flexure of the leaf due to changes in pressure gradient as the leaf passes a leak results in signals from the sensors being sent to an onboard processor. The processor determines the position of the affected leaf, and rotates a repair component to apply a pressure-sensitive tape patch over the leak as the repair component passes the leak.

Abstract: Access and connection for a buried pipeline, wherein a hole is dug to a buried pipeline, a riser pipe is disposed within the hole, and one or more powered tools are lowered into the hole and activated such that work is performed on the pipeline without the need for anyone to be lowered into the hole. Because no one needs to be physically present down in the hole at the pipeline, the hole, and thus the surface disturbance can be much smaller than conventional pipeline work methods.

Abstract: An device and method for repairing the junction of a main pipe line and a lateral pipe. The device uses a series of independently controlled bladders to adjust the timing and pressure exerted by the bladders on the pipes. The device also uses a liner assembly of resin absorbent material is formed, with a tubular lateral liner connected to a concentric circular main liner. The liner also includes an opening to facilitate loading of the liner in the device. Upon loading the bladders and resin-embedded liner into a train, the device is positioned and the bladders independently inflated, either concurrently or in sequence, installing the liner assembly onto the pipe. Once the resin is cured, the bladder assembly and launcher are removed from the sewer pipe.

Abstract: A method and apparatus for repairing a pipe system including a main pipe extending between a first and second manhole and one or more lateral pipes extending from the main pipe is provided. Aspects of the invention include the use of a main liner member having a plurality of lateral liner tubes in fluid connection and extending from the main liner member. The main liner member is used to line a main pipe, while the multiple lateral liner tubes extend into separate lateral pipes extending in various orientations from the main pipe. This method and apparatus provides for a single assembly to be able to line multiple pipes, which reduces time and cost for pipe repair.

Abstract: In a method for rehabilitating an old pipe, the outer diameter of a new pipe, which is at least equal to the inner diameter of the old pipe, is initially reduced, and the new pipe is then inserted into the old pipe, the outer diameter of the new pipe remaining at least partially reduced during the insertion process. The invention is characterized in that an expanding device is moved through the old pipe ahead of the new pipe.

Abstract: An in situ method of repairing an underground conduit or pipe is disclosed. The method of repairing includes positioning a reinforcing fabric within the pipe being repaired, spaced apart from the inner surfaces of the pipe, and infiltrating the fabric with a bleed resistant cementitious composition.

Abstract: The present invention provides a liner assembly for repairing the wall of a pipe that includes a transmitter or transmitters capable of transmitting information, such as identification information and physical characteristics of the area around the transmitter. Embedded in the liner is a transmitter, which includes a radio-frequency identification and at least one sensor. The RFID transmits identification information about the repaired wall, while the sensor provides physical characteristics of the environment in and around the pipe. Examples of physical characteristics may include temperature, pressure, flow, chemical reactions, velocity of the pipe, and the like. Additional transmitters may be used along the length of the pipe to determine characteristics at multiple locations, with each additional transmitter including the same or different sensors.

Abstract: An apparatus and method is provided for structurally renewing and sealing a wall of a manhole. The apparatus includes a tubular sleeve impregnated with a hydrophilic or hydrophobic material capable of expanding when in contact with water, and a liner impregnated with a resinous material capable of curing and hardening. The apparatus is positioned in a manhole and inflated, which forces the tubular sleeve and the liner into contact with the wall of the manhole. The hydrophilic or hydrophobic material is forced into defects of the wall, thus sealing the wall, while the liner is allowed to cure and harden, thus structurally renewing the wall of the manhole.

Abstract: A method of repairing a composite component having a damaged area including: laying a composite patch over the damaged area; activating the shape memory polymer resin to easily and quickly mold said patch to said damaged area; deactivating said shape memory polymer so that said composite patch retains the molded shape; and bonding said composite patch to said damaged part.

Abstract: A method and system for lining pipes which utilizes an in-line water heater to improve efficiency when lining long lengths of pipe. The method and system for lining pipes generally includes a pipe lining machine and a water heater. The outlet of the pipe lining machine will generally be connected to the inlet of the water heater by a first conduit. The outlet of the water heater will generally be connected to a second conduit and the linet of the pipe lining machine will generally be connected to a third conduit. A non-metallic liner is extended through the pipe to be lined and connected at either end to the respective ends of the pipe, the end of the second conduit and the end of the third conduit. By placing a water heater in-line with the pipe lining machine, the pipe lining capability of the pipe lining machine may be greatly improved.

Abstract: A device and method for repairing the junction of a main pipe line and a lateral pipe. The device uses a series of independently controlled bladders to adjust the timing and pressure exerted by the bladders on the pipes. The device also uses a liner assembly of resin absorbent material is formed, with a tubular lateral liner connected to a concentric circular main liner. The liner also includes an opening to facilitate loading of the liner in the device. Upon loading the bladders and resin-embedded liner into a train, the device is positioned and the bladders independently inflated, either concurrently or in sequence, installing the liner assembly onto the pipe. Once the resin is cured, the bladder assembly and launcher are removed from the sewer pipe.

Abstract: The invention relates towards a bladder tube having an open and a closed end. The closed end of the bladder tube is formed by folding a surplus portion of the bladder tube, inserting a grommet through the folded portion of the bladder tube, banding at least a portion of the surplus portion of the bladder tube, and passing at least a portion of the banding through the grommet. The banding may comprise a rope or other material that can be tied. An exhaust port may also be punched through the layers of the folded portion of the bladder tube to exhaust steam or other fluids.

Abstract: One invention relates to a liner (5) for repairing the connection between a main pipeline (100) and a lateral pipe (200). The liner (5) includes a main pipeline lining part (12) that in use forms a tubular portion for lining an inner circumferential portion of the main pipeline (100) and a lateral pipe lining part (14) that in use forms a tubular portion for lining an inner circumferential portion of the lateral pipe (200). Located between the lateral pipe lining part (12) and the main pipe lining part (14) there is a transition zone (16) that in use is arranged to line a junction zone (150) between the main pipeline (100) and the lateral pipe (200). The transition zone (16) of the liner (5) is formed integrally with the main pipeline lining part (12) and the lateral pipe lining part (14).

Abstract: A multilayer film that is impermeable to liquids and is to some extent permeable to UV radiation, optionally in the form of a tubular film, having a layer sequence of a layer (a) comprising at least one thermoplastic olefin homo- or copolymer, as one of the external layers, an adhesive-promoter layer (b), an internal layer (c) comprising at least one homo- and/or copolyamide, an adhesive-promoter layer (d), and a layer (e) comprising at least one homo- and/or copolyamide, as one of the external layers, wherein the VICAT softening point of the thermoplastic olefin homo- or copolymer of the layer (a) is at least 100° C., and the use of said multilayer film as internally situated tube of an insertion tube for the renovation of subterranean pipes, an insertion tube of this type, and a pipe-renovation system suitable for the renovation of subterranean pipes.

Abstract: A liner assembly and method for lining a damaged pipe junction between a main and lateral pipe is provided. The liner assembly includes a main liner member and a lateral liner tube. A collar disposed near the juncture between the main liner member and lateral liner tube is impregnated with a liquid hydrophobic or hydrophilic material capable of curing in a flexible or rigid state with the material expanding in the presence of water. The hydrophobic or hydrophilic material can also be applied without the use of the collar. When the liner assembly is pressed against the main and lateral pipes, a portion of the hydrophilic or hydrophobic material is forced into the damaged pipe junction.

Abstract: A method of repairing and renewing a manhole chimney utilizes a circumferentially stretchable liner sleeve which is inserted into the manhole and pressed by an inflatable bladder into engagement with the walls of the manhole chimney. The sleeve is coated with an uncured resin, which is allowed to cure as the sleeve is pressed against the chimney walls, thereby attaching the sleeve to the walls of the manhole chimney. The stretchable sleeve eliminates air spaces between the sleeve and the chimney walls, and precludes formation of undesirable folds in the sleeve. The sleeve stretches circumferentially up to 150% of its unstretched diameter, while having a substantially unstretchable length.

Abstract: System for pipeline rehabilitation. The system includes repairing a leak in a pipe using a pair of substantially semi-cylindrical parts connected through a compliant joint. When the parts are compressed, the semi-cylindrical parts form a cylinder whose outside diameter is less than the inside diameter of a pipe with a defect thereby allowing the cylinder to be inserted into the pipe at a location of a leak. Once in place, the parts engage the inside surface of the pipe when the compression is released thereby to seal the leak.

Abstract: An elongated web or strip (200) comprising a wall portion bounded by edge portions and adapted to form a conduit by spirally winding said web and joining adjacent edge portions. The edge portions (210, 220) are adapted to permit relative movement between adjacent portions of the spiral conduit and thereby provide radial alteration of the conduit. The web includes a compensation portion (300) to alter the dimension of the web (200) upon radial alteration of the conduit and thereby compensate for creep in the spiral conduit. In a particularly preferred embodiment the edge portion comprises a primary lock (214, 224) and a secondary or sacrificial lock (212, 222). The sacrificial lock is disengaged by release of the mechanism 215 to permit relative movement there between and thereby effect radial alteration of the conduit.

Abstract: The present invention comprises a method and means for repairing the wall of a manhole wherein a material capable of curing and hardening is adhered to the wall. An expandable bladder engages the curable and hardenable material and presses against and smoothes the material. The bladder may be chemically bonded to the curable and hardenable material or it may be mechanically bonded.

Abstract: Liner for CIPP rehabilitation comprising a layer of thermoplastic polymer material, a resin absorbent layer, thermosetting hot curing-resin impregnating the absorbent layer; wherein said thermoplastic is a heterophasic polyolefin composition (I) having flexural modulus equal to or lower than 200 MPa, and comprising a crystalline propylene homopolymer (a); and a copolymer or a composition of copolymers of ethylene with other alpha-olefins (b) containing from 15% by weight to less than 40% by weight of ethylene.

Abstract: The present disclosure provides an inexpensive wrap-around irrigation tube patch composed of a thin, flexible polymer film and having a closure mechanism for quickly and effectively wrapping and sealing the patch around a damaged section of irrigation tubing. In addition, the present disclosure provides a method for sealing water leaks in irrigation tubing, the method including wrapping a wrap-around irrigation tube patch around a damaged section of irrigation tubing and sealing said patch around the irrigation tubing via a closure mechanism.

Abstract: The present invention includes a device and method for reinforcing the portions of an inflation bladder not contained by a liner in pipeline renewal applications. A liner/bladder assembly is provided wherein the liner is positioned relative to the bladder such that a portion of the bladder having a greater wall thickness extends beyond the ends of the liner. The present invention also includes a device and method for repairing the junction of a main pipe and the lateral pipe with bladders reinforced in areas unconstrained by the liners.

Abstract: The present invention relates to a tubular lining material for reinforcing pipelines comprising an air-impervious and light-impervious inner layer of a polymer, an outer tubular jacket comprising a textile, a woven, a non-woven and/or a felt structure and a curable resin, said resin comprising a mixture of UV initiators and peroxides.

Abstract: A tube liner for repairing a damaged or worn out auger tube or pneumatic conveyor tube. The tube liner includes an elongated liner body with a longitudinally extending gap and expandable seam assembly positioned in the gap. Once the liner is inserted into the auger tube or pneumatic conveyor tube, the expandable seam forces the liner against the inside wall of the auger tube or pneumatic conveyor tube to provide a tight seal.

Abstract: A method of repairing a composite component having a damaged area including: laying a composite patch over the damaged area; activating the shape memory polymer resin to easily and quickly mold said patch to said damaged area; deactivating said shape memory polymer so that said composite patch retains the molded shape; and bonding said composite patch to said damaged part.

Abstract: A tubular lateral pipe lining material is configured to be inserted into a lateral pipe which intersects with a main pipe in order to repair the lateral pipe. The tubular lateral pipe lining material has a flexible tubular resin-absorbing material impregnated with an uncured curable liquid resin. The tubular resin-absorbing material has one end that is folded back. A flange member, over which the folded-back end of the tubular resin-absorbing material is pressed, is made of a thermoplastic resin. An adhesive is applied over the flange member and the folded-back end of the tubular-absorbing material to bond the tubular resin-absorbing material to the flange member.

Abstract: A lining element for the rehabilitation of a pipeline, the lining element having a substrate layer including a resin-absorbing material and a coating system, the coating system including a fluid-tight barrier layer system formed from several layers.

Abstract: A self-seeking plug for deployment in a hydraulic line with a leak therein. The plug is configured for circulation through the line and to a resting location adjacently below or past the location of the leak in the line. As a result, the location of the leak may be identified, for example with reference to a tether running between the resting location and the site of deployment. Thus, line repair may more readily ensue. Additionally, and/or alternatively, sealing repair may ensue by way of sealing element(s) outfitted on the plug. Such may or may not be accompanied by an exposable bypass channel through the plug for sake of full hydraulic restoration of the line.

Abstract: An apparatus and method for sealing pipes or underground structures is provided. In one embodiment, the end of a pipe is sealed by the use of a pipe liner and a sealing member. The sealing member may be a hydrophilic material, a hydrophobic material, a compressible material, or a paste. The sealing member is held in place by a mechanical fastener and a liner is installed adjacent the sealing member and against the wall of the pipe or other structure to be sealed. In another embodiment, a manhole is sealed by the use of a sealing member, a mechanical fastener, and a manhole liner.

Abstract: A method and means for repairing the junction of a main and lateral pipe are provided. A repair assembly includes a launcher device, a bladder assembly surrounding the launcher device, and a liner assembly surrounding the bladder assembly. The bladder assembly is frangibly connected to the launcher device to maintain the position of the bladder assembly relative to the launcher device during transport and positioning of the assembly. Likewise, the liner assembly, which includes main and lateral liner members, is frangibly connected to the bladder assembly. The frangible connections allow the position of the repair assembly to be maintained. The frangible connections can be broken, such as by inflation and/or tearing or pulling apart of the components of the repair assembly. Thus, the invention provides a way to mitigate the movement of components of the repair assembly during transport and positioning of the repair assembly.

Abstract: A liner tube is provided for repairing either a single pipe line or 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 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.

Abstract: The winding apparatus has a forming frame which goes inside an underground damaged pipe, and a rail which regulates the circumference track of a forming frame as the joint mechanism interlocks adjacent portions of a plastic strips. The forming frame has a plurality of guides that are connected extend along with a rail. Each guide contains a guide roller which can rotate freely about an end of the corresponding roller shaft. Each guide roller has an outside large diameter part and an inside small diameter part. The rail has a guide groove portion for the large diameter part of a guide roller at each edge of a course in a width direction.

Abstract: A liner tube is provided for repairing either a single pipe line or 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 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.

Abstract: A sealing tube for the internal lining of fluid lines, in particular waste water lines, includes at least one tubular fabric ply, which is impregnated or saturated with a synthetic resin having a preferably gel-like or concentrated consistency. The weft bands or threads, which run in the circumferential direction, are formed by glass fibers or threads, in particular only by glass fibers or threads. The warp bands or threads, which run in the longitudinal direction of the sealing tube, are formed by, if necessary elastically stretchable, glass threads and/or rubber threads and/or plastics threads.

Abstract: A method for repairing a conduit using a tube-shaped liner comprising a single layer of resin-absorbent fabric having a polymeric coating attached to an outer wall of the tube and a reinforcing layer connected to an inner surface of the tube. The liner is impregnated with a resinous material capable of curing and hardening and inverted under pressure into the conduit to be repaired such that the reinforcing layer is pressed against the interior of the conduit. The resinous material is allowed to cure and harden, creating a lining to the conduit. The single layer of fabric may be a non-woven material, such as a felt. The conduit to be lined may be a sewer pipe, and the reinforcing material may be a woven scrim. The woven scrim may be capable of preventing longitudinal stretch of the liner tube while allowing radial stretch.

Abstract: A fluid flow impedance system including a member having a wall with at least one opening therethrough and a tool positionable relative to the at least one opening. The tool has a carrier with an expandable material disposed therewith. The expandable material is operatively arranged to expand into the at least one opening, in response to the expandable material experiencing a predetermined condition, for impeding a flow of fluid through the at least one opening.

Abstract: A tubular liner for rehabilitating sewers includes a circumferentially expandable reinforcing layer impregnated with a light-curable reactive resin, and an outer tubular film surrounding the reinforcing layer and formed of a radially expandable material impermeable to UV light, in particular a liquid-tight and gas-tight plastic film. The tubular liner can be pulled into a sewer to be rehabilitated and can be expanded, in particular by using compressed air, so that the reinforcing layer and the outer tubular film contact the inner wall of the sewer before the reactive resin is cured. A protective tube made of a tear-resistant material is disposed around the outer tubular film and has a connecting portion extending in the longitudinal direction of the outer tubular film and being expandable in the circumferential direction by introducing compressed air into the tubular liner.

Abstract: A liner tube is provided for repairing either a single pipe line or 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 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.

Abstract: A liner tube is provided for repairing either a single pipe line or 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 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.

Abstract: A kit, apparatus, and method for sealing a junction between a manhole and a pipe within a sewer system are provided. In a first embodiment, the end of a pipe adjacent a manhole is sealed by the use of a pipe liner and a tubular sleeve made of a hydrophilic material. The tubular sleeve is held in place by a mechanical fastener and a pipe liner is installed or otherwise placed through the tubular sleeve and against the wall of the pipe. In a second embodiment, a majority of the area surrounding a junction of a pipe and a manhole is sealed by the use of a tubular sleeve made of a hydrophilic material including a flange portion, a mechanical fastener, a pipe liner, and a manhole liner.

Abstract: An apparatus and method for sealing pipes or underground structures is provided. In one embodiment, the end of a pipe is sealed by the use of a pipe liner and a sealing member. The sealing member may be a hydrophilic material, a hydrophobic material, a compressible material, or a paste. The sealing member is held in place by a mechanical fastener and a liner is installed adjacent the sealing member and against the wall of the pipe or other structure to be sealed. In another embodiment, a manhole is sealed by the use of a sealing member, a mechanical fastener, and a manhole liner.

Abstract: An apparatus and method for sealing pipes. In one embodiment, the end of a pipe is sealed by the use of a pipe liner and a sealing member. The sealing member may be a hydrophilic material, a hydrophobic material, a compressible material, or a paste, and may also be a unitary member or formed from a sheet of material. The sealing member is held in place by a mechanical fastener and a liner is installed adjacent the sealing member and against the wall of the pipe or other structure to be sealed. The mechanical fastener aids in holding the sealing member in place at the end of the pipe.