Patent ID: 9683692
Date: 2017-06-20
CPC Classifications: F16L

Claim:
1. A system for repairing a junction between a main sewer pipe and a lateral sewer pipe, the system comprising an apparatus for repairing the junction between the main sewer pipe and the lateral sewer pipe, the apparatus comprising: a tubular portion having an opposite first and second ends, said tubular portion in contact with an interior wall of the lateral sewer pipe; a collar extending outwardly from one of the first or second ends of the tubular portion, said collar in contact with an interior wall of the main sewer pipe; and wherein the tubular portion and the collar are formed of a curable, waterproof putty; the system further comprising a bladder system which inverts the tubular portion of the repairing apparatus from the tubular portion facing downwardly from the collar towards the main sewer pipe, to facing upwardly from the collar toward the lateral sewer pipe.