Abstract: A conduit repair apparatus includes a carriage configured for movement within a conduit, the carriage including a carrying frame and a drive member. An expansion and brake mechanism is provided on the carriage, and includes at least one radially movable engagement member to apply a radially outwardly directed force. A mechanical force applicator mechanism is provided on the carriage and includes at least one force applicator configured to apply radially outwardly directed pressure and for rotation about an axis of rotation. A power source is connected to the force applicator mechanism to rotatably drive the force applicator about the axis of rotation, whereby the force applicator mechanism can be actuated and simultaneously rotated to thereby apply radially outwardly directed pressure uniformly to an inner wall of a repair sleeve positioned within the conduit.

Abstract: The present invention relates to an apparatus and method for repairing pipes and conduits, particularly high-pressure pipes and conduits, such as natural gas lines, water lines, and steam lines. The conduit repair apparatus includes a sleeve having an outer surface. outwardly flared end portions, a pair of longitudinal edges and a locking structure to lock the sleeve into a tubular configuration within an inner surface of a host pipe to be repaired. A resilient, compressible gasket is adapted to be applied over the outer surface of the sleeve, and a sealing membrane is adapted to be applied over the outer surface of the resilient, compressible gasket. A curable sealant is adapted to be applied over the sealing membrane, and the sealant is pressed by the resilient, compressible gasket between the outer surface of the sleeve and the inner surface of the host pipe while the sealant is cured. The resilient, compressible gasket may be formed as a layer of closed cell polyethylene or polyurethane foam.