METHOD AND APPARATUS FOR LINING A PIPE
First Claim
Patent Images
1. An apparatus for repairing a damaged portion of a pipe, the apparatus comprising:
- a liner including a tubular sleeve of resin absorbent material that is capable of being stretched circumferentially and a plastic film disposed on an exterior surface of the sleeve;
wherein the structural integrity of the plastic film is compromised in response to the circumferential stretching of the sleeve to expose a resinous material in the sleeve to the damaged section of the pipe.
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Accused Products
Abstract
A new apparatus for repairing a damaged portion of a pipe includes a liner having a tubular sleeve of resin absorbent material that is capable of being stretched circumferentially and a plastic film laminated to an exterior surface of the sleeve. The plastic film contains resinous material in the liner until the liner is stretched circumferentially to thereby breech the integrity of the plastic film and expose the resinous material to a damaged section of pipe in need of repair. A method of lining a damaged section of pipe using the liner is also provided.
34 Citations
23 Claims
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1. An apparatus for repairing a damaged portion of a pipe, the apparatus comprising:
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a liner including a tubular sleeve of resin absorbent material that is capable of being stretched circumferentially and a plastic film disposed on an exterior surface of the sleeve; wherein the structural integrity of the plastic film is compromised in response to the circumferential stretching of the sleeve to expose a resinous material in the sleeve to the damaged section of the pipe. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for repairing a damaged portion of a pipe, the apparatus comprising:
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an elongated inflatable plug; a liner positioned around the plug, the liner including a tubular sleeve of resin absorbent material that is capable of being stretched circumferentially and a plastic film adhered to an exterior surface of the sleeve; wherein the structural integrity of the plastic film is compromised in response to the circumferential stretching of the sleeve to expose a resinous material in the sleeve to the damaged section of the pipe. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method of lining a damaged section of a pipe comprising:
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providing a liner including a tubular sleeve of resin absorbent material and a plastic film adhered to an exterior surface of the sleeve; impregnating the liner with a resinous material capable of curing and hardening; moving the liner into the pipe to a position adjacent the damaged section of the pipe; stretching the liner circumferentially toward the damaged section of pipe to thereby breach the integrity of the plastic film and expose the resinous material and tubular sleeve to the damaged section of the pipe; pressing the liner against the damaged section of pipe; and allowing the resinous material to cure and harden. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A method of lining a damaged section of a pipe comprising:
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taking a liner including a tubular sleeve of resin absorbent material and a plastic film adhered to an exterior surface of the sleeve; impregnating the liner with a resinous material capable of curing and hardening; positioning the liner around an elongated inflatable plug; moving the inflatable plug with liner into the pipe to a position adjacent the damaged section of the pipe; inflating the inflatable plug to stretch the liner circumferentially toward the damaged section of pipe to thereby breach the integrity of the plastic film and expose the resinous material and tubular sleeve to the damaged section of the pipe; pressing the liner against the damaged section of pipe; allowing the resinous material to cure and harden; and removing the inflatable plug from the pipe.
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Specification