A sewer line root cleaning and repair system includes a root cleaner having a first body and a second body connected by a flexible connector. A flexible rotating member extending from a pneumatic motor in the first body extends through the flexible connector and the second body. The flexible rotating member terminates beyond the second body in a series of bristles. As the root cleaner moves through a sewer line a set of wheels on the first body extends outward, centering the first body in the sewer line as the bristles spin at high RPM centering the second body in the sewer line and scouring the sewer line free of roots including small root hairs. Afterward, a coating sprayer is inserted into the sewer line, connected to a coating supply and air supply, and the coating is sprayed under pressure to line the inner surface of the sewer line.

The invention relates to a segment of pipe-in-pipe pipeline comprising an annulus under reduced pressure sealed and delimited by a metallic internal pipe inserted into a metallic external pipe and provided with a measurement system to determine in a non-intrusive manner the state of the annulus, the measurement system being composed of a first internal emitter/receiver assembly placed inside the annulus and cooperating with means to measure a first physical quantity such as pressure, hygrometry or temperature inside the reduced pressure annulus and a second external emitter/receiver assembly arranged to the exterior of the segment and facing said first assembly.

A pipe pig is provided with linked wheels, and at least a central wheel of the linked wheels is pivotally linked to adjacent wheels through a spring loaded connection that biases the central wheel out of straight line alignment with the adjacent wheels. The pipe pig may be used to negotiate tight bends in a pipe and carry sensing electronics.

A tool, method, and system for in-line inspection or treatment of a pipeline, with the tool including a first traction module on a first longitudinal end, and a second traction module on a second end. The tool includes at least one work module, such as an encoder module and/or an ultrasonic testing module, which is positioned between the first and second traction modules. A plurality of flexible connecting elements each interconnect one of the first and second traction modules for articulation to the at least one work module. Each of the first and second traction modules has at least one sealing element that causes propulsion in response to a fluid flow in a pipeline to be inspected or treated in one direction and allows relatively unhindered passing of the fluid flow in an opposite direction.

The apparatus comprises a pipe PIG and a gauge. The PIG is for use with a pipeline and is of the type including: a body defining a longitudinal axis; and a pair of seals connected to the body and axially spaced apart from one another by the body. The gauge: has a longitudinal axis; has an outer periphery through which the longitudinal axis of the gauge passes centrally; has a central position relative to the body wherein the longitudinal axis of the body and the longitudinal axis of the gauge are at least substantially coincident; and is mounted to the body for generally radial movement relative to the central position.

In a mobile system for pipe rehabilitation, a tractor moves a motorized electrical cutter inside a pipe. The cutter is used to remove a blockage from a branch conduit connected to the main pipe. A power management system powers the mobile system, including the cutter, from a direct current power source with an input current having a voltage less than 60V. The power management system powers the electrical cutter by discharging current from the supercapacitor module to the cutter. Power to other components is provided without discharge from the supercapacitor module and is not interrupted by supercapacitor discharge to the cutter. The power management system can include a housing for the supercapacitor module with a first connector at one end for connecting to an umbilical cord and a second connector an opposite end for connecting to the tractor.

The present invention is an improved method and assembly for repairing a pipe or the junction of two pipes, such as sewer pipes. The assembly includes a launcher device having a launcher device body, a launcher device opening disposed on the launcher device body, and a main bladder substantially surrounding the launcher device body. The main bladder includes an opening that substantially aligns with the launcher device opening. The assembly further includes an absorbent liner and a lateral bladder having a tubular lateral bladder body portion and a flange portion. The flange portion of the lateral bladder is attached to the exterior of the launcher device body. A method of using the assembly includes impregnating the liner with resinous material; inserting at least a portion of the liner into the lateral bladder; inflating the bladders; pressing the liner against the pipe; and allowing the resinous material to cure and harden.

A deflection device for an inspection device is provided, wherein the deflection device has a working appliance having a main body and a pivoting element. The pivoting element is arranged pivotably about a pivot axis relative to the main body, a flexible fixation element, having a first end and a second end, wherein the main body is arranged at the first end, and a pulling element having a first end and a second end, wherein the first end of the pulling element is fixed at the pivoting element, and wherein the second end of the pulling element is fixed in the region of the second end of the fixation element.

An underground pipe repair device is for a joint between a service pipe and a branch pipe. The underground pipe repair device may include a first T-shaped joint liner having a base portion extending laterally in the service pipe, and an arm portion extending vertically into the branch pipe, and a second ring-shaped liner under the first T-shaped joint liner and aligned with an opening in the branch pipe. The underground pipe repair device may include an annular spacer aligned with the opening in the branch pipe and being between the first T-shaped joint liner and the second ring-shaped liner. The annular spacer may include a radial step, and the second ring-shaped liner may be coupled to the base portion of the first T-shaped joint liner to retain the annular spacer.

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.