Method and means of lining a manhole
AssigneeLMK Technologies, LLC
InventorsLarry W. Kiest, Jr., Jason M. Mathey
Life of this patent
Estimating the term…
Abstract
An apparatus and method is provided for lining the wall of a manhole. The apparatus may include a liner assembly, which includes an expansion device, an auxiliary bladder, a primary bladder, and a liner. The auxiliary bladder is first inflated near the top of the manhole. Next the primary bladder may be expanded to press the liner against the wall of the manhole. The liner, being impregnated with a resinous material, is pressed against the wall until the resinous material cures and hardens. The expansion device, auxiliary bladder, and primary bladder are then removed from the manhole. The result is a repaired manhole wall.
Claims17
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.
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 and extending below the auxiliary bladder and end can and operatively attached to a primary bladder end cap away from the auxiliary bladder;
- 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.
Dependencies are inferred from the claim text.