Patent ID: 8807172

Claim:
A method for repairing a damaged junction between a main line sewer pipe and a lateral sewer pipe, said method comprising: forming a main bladder tube having first and second opposite ends and a main bladder tube opening there between; forming a lateral bladder tube having an anchor portion extending radially from one end; forming a main liner member and a lateral liner tube of resin absorbent material, said main liner member having a main liner opening therein, said lateral liner tube having a first lateral liner tube end connected to said main liner opening; inserting said lateral bladder tube at least partially inside a launcher tube through a launcher tube opening in said launcher tube while at the same time keeping said anchor portion at least partially outside of said launcher tube; affixing a substantially semi-tubular repair cuff, having a repair cuff opening therein, to said launcher tube with said anchor portion secured there between; positioning said main bladder tube over said repair cuff and said launcher tube such that the main bladder tube opening is aligned with said repair cuff opening and said launcher tube opening; inserting said lateral liner tube through said main bladder tube opening and said repair cuff opening into the interior lumen of the lateral bladder tube while at the same time keeping said main liner member at least partially outside said main bladder tube.