Patent ID: 9151418
Filing Date: 2015-10-06
Classification: F16L,Y10T

Abstract:
1. A flexible pipe, comprising: a capability for generating heat; and a multilayer structure, wherein the multilayer structure comprises, in order from the inside to the outside of the multilayer structure: an interior lining; an inner reinforcement layer; a layer of molded electrically conductive plastic, wherein a volume resistivity of the molded electrically conductive plastic is from 10 an outer reinforcement layer; and an exterior sheath; wherein the inner and outer reinforcement layers are comprised of helically arranged steel wires, steel profiles, or steel tapes, wherein the molded electrically conductive plastic layer is in electrical contact with the inner and outer reinforcement layers, wherein the inner and outer reinforcement layers are connected to a source of electrical current to pass electrical current through the reinforcement layers to heat the flexible pipe, and wherein the layer of molded electrically conductive plastic is a wound layer formed by winding a prefabricated tape onto the inner reinforcement layer.