Patent ID: 8500429

Claim:
A liner and bladder assembly for repairing the wall of a manhole having the advantage of minimizing the risk of tearing a liner, the assembly comprising: an auxiliary bladder adapted to be positioned toward an upper portion of the wall of the manhole, the auxiliary bladder operatively attached to an end cap toward a lower portion of the auxiliary bladder; a primary bladder at least partially surrounding the auxiliary bladder and end cap extending below the auxiliary bladder and end cap toward is lower portion of the wall of the manhole; a liner at least partially surrounding the primary bladder and adapted to be positioned between the primary bladder and the wall of the manhole; wherein the auxiliary bladder is adapted to inflate and expand outwardly to press the liner against the wall of the manhole along the upper portion of the wall of the manhole; and wherein the primary bladder is adapted to inflate and press the liner against the wall of the manhole in the lower portion of the wall of the manhole.