Patent ID: 8328969

Claim:
A method of lining a passageway with a liner containing a curable resin, comprising: introducing the liner into and along the passageway; providing air pressure within the liner to maintain the liner in contact with the passageway; inserting a microwave applicator into the passageway; emitting radiation from the microwave applicator to deposit thermal energy into the resin and thereby initiate curing of the resin in the liner; and utilizing the air pressure within the liner to directly move the applicator, while maintaining a sufficient pressure to maintain the liner in contact with the passageway on a first side of the microwave applicator and a second side of the microwave applicator; wherein the air pressure is a positive pressure on the first side of the applicator and the second side of the applicator; wherein the air pressure provides a force to propel the applicator through the passageway.