Patent ID: 11953139
Assignee: PERMA-LINER INDUSTRIES, LLC
Field: Other special machines (Mechanical engineering)
Classification: CPC F  B  G | IPC B  F

Claim 23:
24. A method of repairing a hollow conduit having an inside wall surface, said method comprising:
taking a tubular liner having a first portion and a second portion and impregnating the tubular liner with a light-activated resin;
taking an inversion bladder having a first portion and a second portion;
taking an inversion apparatus having an opening and creating a seal between the inversion apparatus and the first portion of the tubular liner to allow inversion pressure to be communicated from the inversion apparatus to the tubular liner;
inverting the tubular liner through the opening under pressure to an inverted position inside the hollow conduit;
creating a seal between the inversion apparatus and the first portion of the inversion bladder to allow inversion pressure to be communicated from the inversion apparatus to the inversion bladder;
inverting an inversion portion of the inversion bladder under pressure to an inverted position inside the inverted tubular liner and then halting the inversion of the inversion bladder;
attaching a light curing activator to the second portion of the inversion bladder;
inverting a remainder of the inversion bladder into the inverted liner so the second portion of the inversion bladder pulls the light curing activator through the inverted tubular liner;
powering up the light curing activator to help initiate curing of the light-activated resin.