Degradation resistant expandable tubing and method and system for manufacture thereof
First Claim
Patent Images
1. an article of manufacture comprising:
- an expandable tube; and
an expandable, degradation-resistant liner integrally bonded to the interior surface of the expandable tube.
0 Assignments
0 Petitions
Accused Products
Abstract
An article of manufacture, apparatus, system, and method are disclosed for providing degradation-resistant expandable tubing. Degradation resistance is supplied by integrally bonding a degradation resistant liner of similar expansion capacities to the expandable tubing.
-
Citations
33 Claims
-
1. an article of manufacture comprising:
-
an expandable tube; and
an expandable, degradation-resistant liner integrally bonded to the interior surface of the expandable tube. - View Dependent Claims (2, 3, 4, 5, 7, 15)
-
-
6. An article of manufacture comprising:
-
an expandable tube;
an expandable, degradation-resistant liner integrally bonded to the interior surface of the expandable tube; and
a mandrel inserted in the longitudinal lumen of the liner. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
-
-
16. An apparatus for manufacturing tubing, the apparatus comprising:
-
a longitudinal center chamber having gas-permeable, rigid walls;
a longitudinal outer chamber of a diameter greater than the center chamber, having impermeable rigid walls;
the center chamber positioned inside the outer chamber; and
the space between the center chamber and the outer chamber being closed on each end with an air-tight seal. - View Dependent Claims (17, 18, 19)
-
-
20. A system for manufacturing tubing, the system comprising:
-
a mandrel insertion apparatus;
a pre-formed liner tube;
a pre-formed mandrel; and
a resulting liner-clad mandrel. - View Dependent Claims (21, 22)
-
-
23. A system for manufacturing tubing, the system comprising:
-
a mandrel extrusion die;
a source of extrudable mandrel material;
a liner tube extrusion die;
a source of extrudable liner tube material; and
a resulting liner-clad mandrel. - View Dependent Claims (24, 25, 26)
-
-
27. A method for manufacturing tubing, the method comprising:
-
providing an insertion apparatus;
inserting a pre-formed liner tube into the apparatus;
circumferentially fastening each end of the liner tube to the apparatus to form an air-tight seal leaving the lumen of the liner open;
evacuating the insertion apparatus;
inserting a mandrel into the lumen of the liner tube;
aerating the apparatus; and
removing the liner-clad mandrel from the apparatus. - View Dependent Claims (28, 29)
-
-
30. A method for manufacturing tubing, the method comprising:
-
providing a mandrel extrusion die;
loading the die with extrudable mandrel material;
extruding a mandrel;
passing the extruded mandrel through a liner tube extruding die;
extruding a liner tube on the mandrel; and
removing the liner-clad mandrel from the die. - View Dependent Claims (31, 32, 33)
-
Specification