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. The underground pipe repair device may also include an annular body aligned with and being radially spaced from an opening for the branch pipe and coupled to the first T-shaped joint liner for enabling reinstatement of the branch pipe opening without damaging a liner in the service pipe or the first T-shaped joint liner.

A moisture-cure, hybrid synthetic resin paste may be applied over an aperture formed in a wet surface to cover the aperture and form a waterproof barrier. In some examples, water may be flowing or even gushing through the aperture at the time that the paste is applied. The paste may be applied using a suitable hand tool such as a spatula.

An untethered crawler for use within a pipeline, the crawler includes a body and a pair of wheels that are positionable between a retracted and a deployed position. A multi-axis control unit controls a roll, pitch, and yaw of the crawler within the pipeline.

An untethered crawler for use within a pipeline, the crawler includes a body and a pair of wheels that are positionable between a retracted and a deployed position. A multi-axis control unit controls a roll, pitch, and yaw of the crawler within the pipeline.

An air purging coater apparatus is disclosed for purging mixed components from the apparatus disposed in a pipeline at a pipeline site. The apparatus includes a remote-controlled apparatus for insertion within the pipeline at the pipeline site. The remote-controlled apparatus includes a drive for controllably moving the remote-controlled apparatus internally within the pipeline. A high-pressure mixing device defines a first inlet controllably connected to a pressurized source of a first component. The high-pressure mixing device also defines a second inlet controllably connected to a further pressurized source of a second component. The high-pressure mixing device defines a high-pressure mixing chamber connected to the first and the second inlets for mixing together the first and second components. The high-pressure mixing device defines an outlet connected to the high-pressure mixing chamber for receiving a flow therethrough of the mixed components. A spin head defines an internal conical surface having an apex which cooperates with the outlet of the high-pressure mixing device for receiving the flow of the mixed components. The spin head includes a baffle which is disposed adjacent to the apex such that when the spin head is rotated, the mixed components are deflected by the baffle onto the internal conical surface so that the mixed components are applied to an inside surface of the pipeline at the pipeline site. The high-pressure mixing device is controllably movable from an application disposition thereof to a purging disposition, the application disposition being such that the first inlet and the second inlet are aligned with and in fluid communication with the respective pressurized source and further pressurized source so that the mixed components are applied to the inside surface of the pipeline. When the high-pressure mixing device is controllably moved to the purging disposition, the first and second inlets are moved out of alignment with the pressurized sources so that the flow of the mixed components is terminated and a source of pressurized air flows into and through the first and second inlets and from the inlets through the high-pressure mixing chamber and the outlet for purging any residual mixed components from the high-pressure mixing device thereby avoiding any need for the use of a potentially hazardous solvent together with life threatening conditions that could result from the introduction of such solvent into the pipeline at the pipeline site.

A spiral pipe (9) is formed by joining edges of adjacent turns of a strip member (90) while helically winding the strip member using a pipe-making apparatus. A propulsive reaction force for moving in a winding direction of the strip member is imparted to a following strip portion (92) or a preceding spiral pipe portion (91) of the strip member by a propulsive reaction force imparting portion of the pipe-making apparatus. The following strip portion follows a preceding spiral pipe portion that has already been made into a pipe. A resisting force in a direction opposite to the propulsive reaction force is imparted to the strip member along the winding direction by a friction between a resisting force imparting portion and the strip member generated while the strip member is moved forward. In this arrangement, a diameter limiting frame can be omitted, and thereby, the pipe-making apparatus can be downsized.

A spiral pipe (9) is formed by joining edges of adjacent turns of a strip member (90) while helically winding the strip member using a pipe-making apparatus. A propulsive reaction force for moving in a winding direction of the strip member is imparted to a following strip portion (92) or a preceding spiral pipe portion (91) of the strip member by a propulsive reaction force imparting portion of the pipe-making apparatus. The following strip portion follows a preceding spiral pipe portion that has already been made into a pipe. A resisting force in a direction opposite to the propulsive reaction force is imparted to the strip member along the winding direction by a friction between a resisting force imparting portion and the strip member generated while the strip member is moved forward. In this arrangement, a diameter limiting frame can be omitted, and thereby, the pipe-making apparatus can be downsized.

A coating apparatus is disclosed for applying an activated coating onto an internal surface of a conduit, the coating being activated by mixing at least a first and a second component. The apparatus includes a high-pressure mix gun for mixing the at least first and second components such that the activated coating is generated. A rotary atomizer is operatively connected to and cooperates with the high pressure mix gun for receiving the activated coating from the high pressure mix gun. The rotary atomizer cooperates with the activated coating such that the activated coating is atomized so that application of the atomized activated coating onto the internal surface of the conduit is permitted.

A coating apparatus is disclosed for applying an activated coating onto an internal surface of a conduit, the coating being activated by mixing at least a first and a second component. The apparatus includes a high-pressure mix gun for mixing the at least first and second components such that the activated coating is generated. A rotary atomizer is operatively connected to and cooperates with the high pressure mix gun for receiving the activated coating from the high pressure mix gun. The rotary atomizer cooperates with the activated coating such that the activated coating is atomized so that application of the atomized activated coating onto the internal surface of the conduit is permitted.

Methods and apparatus are provided for repairing a damaged area within a cored passage of a component. The method includes providing a repair tool that has a support portion, a leading portion extending from a first end of the support portion, and a trailing portion extending from a second end of the support portion. The leading portion of the repair tool is inserted into a first opening of the cored passage, and is threaded through the cored passage until the support portion is positioned at the damaged area within the cored passage. A restoration activity is performed on the damaged area as the support portion supports the cored passage proximate to the damaged area. Upon completion of the restoration activity, the repair tool is removed from the cored passage.