Apparatus, methods, and liners for repairing conduits

A method of repairing an intersection of a first conduit and a second conduit comprising the steps of:

• providing a repair material configured to conform to an intersection of a first conduit and a second conduit;
• impregnating said repair material with a heat curable resin;
• positioning said repair material at said intersection;
• compressing said repair material against said intersection with a structure
• having a plurality of electrically conductive fibers;
• and,
• applying an electric current to said conductive fibers to resistively heat said fibers to facilitate curing of said resin in said repair material.

An apparatus for repairing an intersection between a first conduit and a second conduit comprising:

• a. a body to transport repair material wherein the body comprises:
• i. a housing for an inflatable bladder;
• ii. at least one retractable and extendable caul plate or wing structure attached to the body and having an outer surface that is heatable by electrical resistive heating from an array of conductive fibers within the caul plate or wing structure;
• iii. a retractable and inflatable bladder that may be transported substantially within the body to an intersection of two conduits and be extended by fluid pressure from the body and be heated by electrical resistive heating from an array of conductive fibers within the bladder;
• b. a first fine connected to the body for providing fluid pressure from a fluid pressure source to inflate the bladder;
• and
• c. a second line connected to the body for providing electrical energy from a power source to the conductive fibers in the bladder and the caul plate or wing structure.