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.
Claims26
A method of lining a manhole wall having the advantage of minimizing the risk of tearing a liner, the method comprising:
- providing a liner impregnated with a resinous material capable of curing and hardening;
- positioning the liner in a manhole;
- positioning an auxiliary bladder inside the liner;
- positioning a primary bladder inside the liner;
- expanding an upper portion of the liner to press the upper portion of the liner against an upper portion of the wall of the manhole;
- after expanding and pressing the upper portion of the liner against the upper portion of the wall of the manhole, expanding a lower portion of the liner to press the lower portion against a lower portion of the wall of the manhole;
- and
- allowing the liner to cure and harden.
A method of lining a manhole wall having the advantage of minimizing the risk of tearing a liner, the method comprising:
- providing a liner assembly including an expansion device, an auxiliary bladder operably connected to the expansion device, a primary bladder at least partially surrounding the auxiliary bladder, and a liner at least partially surrounding the primary bladder, said liner impregnated with a resinous material capable of curing and hardening;
- positioning the liner assembly in the manhole;
- expanding the auxiliary bladder to press an upper portion of the liner against an upper portion of the manhole wall;
- expanding the primary bladder to press a lower portion of the liner against a lower portion the manhole wall;
- allowing the liner to cure and harden;
- and
- removing the expansion device, auxiliary bladder, and primary bladder from the manhole.
A method of lining a manhole wall having the advantage of minimizing the risk of tearing a liner, the method comprising:
- providing a liner assembly including an 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 cap, and a liner at least partially surrounding the primary bladder and adapted to be positioned between the primary bladder and the wall of the manhole;
- impregnating the liner with a material capable of curing and hardening;
- positioning the liner assembly in the manhole;
- expanding the auxiliary bladder to press an upper portion of the liner against an upper portion of the manhole wall;
- expanding the primary bladder to press a lower portion of the liner against a lower portion of the manhole wall;
- allowing the liner to cure and harden;
- and
- removing the auxiliary bladder, end cap, and primary bladder from the manhole.
Dependencies are inferred from the claim text.