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US 10,767,805 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.
Claims22
A backing ring comprising:
- 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 an inner circumference of said backing ring;
- wherein said inward-facing portion is adapted to be attached to a cured-in-place pipe liner;
- said backing ring further comprises a bonded portion and an unbonded portion and said unbonded portion comprises a pocket adapted to hold a hydrophilic material within said pocket between said unbonded portion and said cured-in-place pipe liner to inhibit said hydrophilic material from contacting an inner surface of a main line pipe;
- said backing ring is positioned on or around a lateral opening of said cured-in-place pipe liner;
- and
- said backing ring comprising a felt.
4 more elements
An apparatus, comprising:
- a cured-in-place pipe liner;
- a backing ring comprising:
- an inward-facing portion,
- an outward-facing portion,
- a first edge portion around an outer circumference of said backing ring, and a second edge portion around an inner circumference of said backing ring;
- wherein said inward-facing portion is attached to said cured-in-place pipe liner;
- said backing ring further comprises a bonded portion and an unbonded portion and said unbonded portion comprises a pocket adapted to hold a hydrophilic material within said pocket between said unbonded portion and said cured-in-place pipe liner to inhibit said hydrophilic material from contacting an inner surface of a main line pipe;
- and
- said backing ring is positioned on or around a lateral opening of said cured-in-place pipe liner.
6 more elements
A method of repairing a lateral junction of a pipe, the method comprising:
- providing a cured-in-place pipe liner;
- providing a backing ring comprising:
- an inward-facing portion,
- an outward-facing portion,
- a first edge portion around an outer circumference of said backing ring, and a second edge portion around an inner circumference of said backing ring;
- wherein said inward-facing portion is attached to said cured-in-place pipe liner;
- positioned on or around a lateral opening of said cured-in-place pipe liner;
- bonding a portion of said backing ring to said cured-in-place pipe liner;
- and
- forming an unbonded portion of said backing ring comprising a pocket adapted to hold a hydrophilic material within said pocket between said unbonded portion and said cured-in-place pipe liner to inhibit said hydrophilic material from contacting an inner surface of a main line pipe.
7 more elements
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;
- forming a U-shape with a first end of said CIPP lateral liner;
- inserting said U-shaped first end of said CIPP lateral liner into a first end of a lateral installation bladder so that a CIPP lateral liner membrane faces 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 a first edge portion around an outer circumference of said backing ring, and a second edge portion around an inner circumference of said backing ring;
- wherein said inward-facing portion is attached to said cured-in-place pipe liner;
- said backing ring further comprises a bonded portion and an unbonded portion and said unbonded portion comprises a pocket adapted to hold a hydrophilic material within said pocket between said unbonded portion and said cured-in-place pipe liner to inhibit said hydrophilic material from contacting an inner surface of a main line pipe;
- and
- securing said main line liner to said bladder.
8 more elements
An apparatus comprising:
- a CIPP liner comprising a main line liner and a CIPP lateral liner;
- a bladder comprising a main liner bladder and a lateral installation bladder;
- wherein said main line liner comprises a felt layer and a membrane and a backing ring;
- wherein a first edge portion around an outer circumference of said backing ring, and a second edge portion around an inner circumference of said backing ring;
- wherein said inward-facing portion is attached to said cured-in-place pipe liner;
- said backing ring further comprises a bonded portion and an unbonded portion and said unbonded portion comprises a pocket adapted to hold a hydrophilic material within said pocket between said unbonded portion and said cured-in-place pipe liner to inhibit said hydrophilic material from contacting an inner surface of a main line pipe:
- wherein said CIPP lateral liner comprises a CIPP lateral liner felt layer and a CIPP lateral liner membrane;
- wherein said felt layer is positioned so that it is contacting said main line liner;
- wherein said CIPP lateral liner is positioned inside of said lateral installation bladder and said CIPP lateral liner and said lateral installation bladder are positioned inside of said main liner bladder;
- and
- said CIPP lateral liner membrane is positioned so that it is contacting said lateral installation bladder.
8 more elements
Dependencies are inferred from the claim text.