Collapsible flexible pipe and method of manufacturing same
First Claim
Patent Images
1. A flexible pipe comprising at least one layer, and an insert disposed in the layer, the cross-sectional area of the diameter of the insert varying around the circumference of the insert.
2 Assignments
0 Petitions
Accused Products
Abstract
A flexible pipe and a method of manufacturing same according to which the pipe is formed by at least one layer, and an insert disposed in the layer and adapted to limit the strain on the layer when the pipe collapses.
-
Citations
43 Claims
- 1. A flexible pipe comprising at least one layer, and an insert disposed in the layer, the cross-sectional area of the diameter of the insert varying around the circumference of the insert.
- 11. A flexible pipe comprising at least one layer, and an insert disposed in the layer and comprising two arcuate sections, the corresponding ends of which engage each other in a manner to form articulations to permit pivotal movement between the engaging ends.
- 18. A flexible pipe comprising at least one layer, and an insert disposed in the layer, and formed by a flexible metallic ply having a circular cross section, approximately one half of the circular cross section of the ply being folded over its other half portion to form a substantially arcuate configuration having enlarged side portions.
- 24. A pipe comprising at least one layer, and a tubular insert disposed in the layer, the circumference of the outer diameter of the insert being constant, and the circumference of the inner diameter of the insert being constant but for two diametrically opposed areas, each having a reduced cross-section.
- 31. A pipe comprising at least one layer, an insert disposed in the layer, an arcuate insert disposed within the layer, and a plurality of articulated cylindrical members embedded in the insert.
- 40. A method of manufacturing a flexible pipe comprising disposing a flexible metallic ply having a circular cross section in an outer tubular layer, and folding over approximately one half of the circular cross section of the ply over its other half portion to form a substantially arcuate configuration having enlarged side portions.
Specification