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US 12,654,416 B2Granted
Composite sleeve for forming a cure in place pipe, composite pipes, and materials and methods thereof
AssigneeZephyros, Inc.
InventorsJason B. Walker, Kenneth Biscorner, Brian T. Beckwith
Life of this patent
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Abstract
The invention relates to composite sleeves for producing a cured in place pipe, to materials and methods for producing the composite sleeve, to methods for repairing a native pipe with the composite sleeve, and to improved cured in place pipes. The composite sleeve has multiple layers including a core layer of a curable one-part resin composition. The curable one-part resin composition is a solid material at 25° C. Preferably the resin composition is pliable at 25° C. so that it can be flexed during manufacturing and/or during installation in a native pipe.
Claims18
A composite sleeve comprising:
- a core layer consisting of a curable one-part resin composition interposed between a first layer and a second layer;
- wherein the sleeve has an inner surface defining an opening and an outer surface;
- wherein the first layer, the second layer, and the core layer each has a cylindrical shape or are capable of being expanded into a cylindrical shape by applying an excess pressure to the inner surface;
- wherein the one-part resin composition is a solid having a tensile modulus of about 10 MPa or more, as measured according to ISO 527 at a temperature of 23° C.;
- wherein the curable one-part resin composition includes one or more epoxy resins.
2 more elements
Dependencies are inferred from the claim text.