Patent ID: 9074720
Filing Date: 2015-07-07
Classification: F16L

Abstract:
1. A method of repairing a damaged section of a pipe, comprising: providing a liner having an open first end and a substantially closed second end; impregnating the liner with a material capable of curing and hardening; inverting the liner into the pipe with an inversion head, wherein the first end of the liner is attached to a portion of the inversion head; inflating the liner using a source of pressurized fluid to create pressure within the liner which presses the liner against the wall of the pipe; inflating a plug at least partially within the inversion head to substantially close the open end of the liner at the inversion head and maintain pressure within the liner; wherein the liner is inverted through the inversion head prior to the inflation of the plug; and allowing the material to cure and harden.