Back to results
US 12,502,862 B2Granted
Flexible tubular structure
AssigneeLong PipesUSA, Inc.
InventorsArthur Derrick Bray Graham, Neil Deryck Bray Graham
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeLong PipesUSA, Inc.
InventorsArthur Derrick Bray Graham, Neil Deryck Bray Graham
Estimating the term…
A tube and a method of constructing such a tube, the tube being in the form of a composite film structure comprising a co-extrusion of a plurality of layers bonded together to provide an integrated structure. The layers comprise an inner layer, an intermediate layer and outer layer. The intermediate layer is of a material compatible with two adjacent layers between which it is interposed, wherein the intermediate layer provides a bridge between the two layers to provide the tube as an integrated structure. The exterior surface of the tube is optionally treated or modified or is provided with a coating, typically for bonding with another substance such as a resinous binder. A hollow structure in the form of a tubular element configured as a pipe and constructed using the tube is also disclosed.
A method of forming a tube as a composite film structure comprising a plurality of layers, the method comprising co-extruding an inner layer defining an interior surface of the tube, an outer layer defining an exterior surface of the tube for bonding with a binder, and at least one intermediate layer between the inner and outer layers, the intermediate layer being of a material compatible with two adjacent layers between which it is interposed.
A method of constructing a hollow structure comprising a radially inner portion and a radially outer portion, with the two portions merging together to provide an integrated tubular wall structure, the method comprising:
Dependencies are inferred from the claim text.