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US 11,560,975 B2Granted
Pipe lining systems and methods of use
AssigneeBLD Services, LLC
InventorsJacob Trapani, Charles Leroy Bolton, Jimmy Dale Ladner, Timothy Michael Matheson
Life of this patent
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Abstract
Systems and methods for pipe lining systems and methods of use are described. Systems and methods may include a CIPP lateral liner that is inserted into a bladder forming a CIPP liner assembly that can be inserted into a pipe line for a pipe repair. CIPP liner assembly can include a membrane that produces superior results compared to the prior art. A backing ring may be used with these systems and methods.
Claims10
A method of positioning a cured-in-place (CIPP) liner on a bladder, the steps comprising:
- providing a CIPP liner wherein said CIPP liner comprises a main line liner and a CIPP lateral liner and the CIPP lateral liner is attached to said main line liner, forming a T-shape;
- providing a bladder wherein said bladder comprises a main liner bladder and a lateral installation bladder and said lateral installation bladder is attached to said main liner bladder, forming a T-shape;
- folding a length of a first end of said CIPP lateral liner in a U-shape;
- inserting said U-shaped first end of said CIPP lateral liner into a first end of a lateral installation bladder with a CIPP lateral liner membrane facing an inner diameter of said lateral installation bladder;
- positioning said CIPP lateral liner and said lateral installation liner inside of said main liner bladder;
- wrapping said main line liner comprising a felt layer and a membrane around said main liner bladder so that said membrane is facing an outer diameter of said main liner bladder;
- attaching a backing ring to said felt layer of said main line liner, wherein the backing ring comprises an inward facing portion and an outward facing portion, a first edge portion around an outer circumference of said backing ring, and a second edge portion around in inner circumference of said backing ring;
- wherein said backing ring comprises a felt;
- and
- securing said main line liner to said bladder.
7 more elements
Dependencies are inferred from the claim text.