Patent ID: 7258141

Claim:
An improved liner assembly for installation in a pipeline of cylindrical cross section, said pipeline having an inner surface and an outer surface and having a beginning end and a completion end, said liner assembly having a longitudinal axis, and a pulling end and initially manufactured with cylindrical cross section that is temporarily folded to facilitate insertion and installation in a pipeline by a tensioning device pulling on the pulling end of the liner assembly, said liner assembly further comprising a core inner liner with an inner surface and an outer surface, at least two strength layers orbitally wound upon the outer surface of the core inner liner; more than one intermediate layers orbitally wound over the strength layers, at least two tension deformation members to sustain the tension generated by the tensioning device during installation in a pipeline and to assist in causing the liner assembly cross section to remain temporarily folded during installation in the pipeline, said tension deformation members longitudinally placed in proximity to and secured by the intermediate layers; at least one instrumentation circuit longitudinally placed in proximity to and secured by the intermediate layers; and an outer liner with an inner surface and an outer surface placed over the intermediate layers.