Abstract: A conduit coupler and method of coupling conduits includes a link member; a circumferential, flexible sealing element,; and a constricting element. The constricting element surrounds at least a majority of the outer radius of the sealing element and adapted to slidably engage the sealing element and the outer surface of link member. The constricting element and the link member compress the sealing element radially and axially as the constricting element constricts. The constricting element comprises at least two section members, each section member coupled to at least one other section member by engagement between a male fitting on one of the coupled members and a female fitting on the other of the coupled members.

Abstract: A system and method of repairing a pipe including securing a reinforcing material, such as a dry fiber structure (e.g., carbon fibers) to the surface of the pipe. An outer sleeve is installed around the reinforcing material. A polymeric material is placed (e.g., poured) into the interior of the sleeve around the reinforcing material. External pressure is applied to the sleeve. The polymeric material substantially saturates the reinforcing material and cures to form a reinforced polymeric composite which may increase or restore the pressure rating or operating pressure capacity of the pipe.

Abstract: A pipeline repair system includes a sleeve adapted to permanently enclose an outer surface of a longitudinal section of a pipeline having a defect. The sleeve includes two or more longitudinal segments of a cylinder joined at the longitudinal edges to form a sleeve with a first and second radial ends. The sleeve is sealed at the radial ends forming an enclosed annular space between the pipeline and the sleeve. An injection port assembly on the sleeve is adapted for temporary connection to an external source of pressurized material. The pressurized material may be a fluid, gas, or slurry. After filling the annulus with pressurized material, the port assembly is sealed. The permanent sleeve receives a majority of the tangential (hoop) stress load from the section of pipeline via the pressurized material in the annular space and may receive a portion of the longitudinal stress load from the section of pipeline.

Abstract: Conduits may be coupled end-to-end to form a secure flow coupling. In one aspect, a conduit coupler includes a link member, a circumferential, flexible sealing element, and a constricting element. The link member includes a first portion adapted to span the region between two conduits to be coupled and a second portion coupled to the first portion and including an inner surface and an outer surface. The sealing element is adapted to slidably engage the inner surface of the second portion of the link member. The constricting element surrounds at least a majority of the outer radius of the sealing element and is adapted to slidably engage the sealing element and the outer surface of the second portion of the link member. The constricting element and the inner surface of the second portion of the link member compress the sealing element radially and axially as the constricting element constricts.