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.

A water line mapping assembly includes a remote unit that is held by a user. The remote unit has a remote transceiver that is in electrical communication with a global positioning system (gps). A capsule is provided that has an outside diameter sufficiently small to fit into a buried pipe. The capsule is comprised of a buoyant material to float in the buried pipe, and the capsule is comprised of a fluid impermeable material. A tracking unit is positioned inside the capsule and the tracking unit is in wireless electrical communication with the gps. Thus, the gps can establish a depth and a position of the tracking unit when the capsule is positioned in the buried pipe. The tracking unit is in electrical communication with the remote unit thereby facilitating the remote unit to display the depth and position of the tracking unit. In this way the remote unit can map the buried pipe.

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 lateral reinstatement cutter. A lower arm is rigidly attached to a base. A pneumatic piston is pivotally attached to the base. A pneumatic cutter is pivotally attached to the lower arm about a lower arm pivot axis and is also pivotally attached to the pneumatic piston. A camera is rigidly attached to the pneumatic cutter. The pneumatic cutter is raised and lowered by expanding and contracting the pneumatic piston causing the pneumatic cutter to pivot about the lower arm pivot axis.

A physical quantity measurement device includes a passage flow channel, a branch flow channel, and a physical quantity detection unit. An inflow region extending from the inflow port and a lateral region laterally arranged to the inflow region are included in at least one of the passage flow channel and the branch flow channel. The physical quantity detection unit is disposed in the lateral region. A guiding surface that guides away from the lateral region in the lateral direction foreign matter is included in at least one of an inner peripheral surface of the passage flow channel and an inner peripheral surface of the branch flow channel at a position upstream of the lateral region.

An assembly for relining a junction between a branch pipeline and a main pipeline comprises a seal installation device capable of moving within the main pipeline to the junction. The seal installation device includes a curable seal for being placed and pressed onto the junction and optionally for extending into the branch pipeline. The assembly further comprises a light curing device for being introduced into the seal installation device within the main pipeline and the branch pipeline for curing the seal.

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 water line mapping assembly includes a remote unit that is held by a user. The remote unit has a remote transceiver that is in electrical communication with a global positioning system (gps). A capsule is provided that has an outside diameter sufficiently small to fit into a buried pipe. The capsule is comprised of a buoyant material to float in the buried pipe, and the capsule is comprised of a fluid impermeable material. A tracking unit is positioned inside the capsule and the tracking unit is in wireless electrical communication with the gps. Thus, the gps can establish a depth and a position of the tracking unit when the capsule is positioned in the buried pipe. The tracking unit is in electrical communication with the remote unit thereby facilitating the remote unit to display the depth and position of the tracking unit. In this way the remote unit can map the buried pipe.

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 of hydrophilic paste positioned about the juncture of the pipe lines. The gasket or bands form a tight seal between the liner tube and the pipe line.

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.