Interlining of fluid transport pipelines, pipes, and the like

Details Interlining of fluid transport pipelines, pipes, and the like Interlining of fluid transport pipelines, pipes, and the like

1984-10-01

1988-09-27

Anderson, Philip

Pipes and tubular conduits

Repairing

Patches

138140, 138149, 138DIG9, 156 78, 156287, 264 34, 264 453, 264 461, 264 469, 264 54, 264173, 264257, 264269, 264DIG5, F16L 5518, E21D 1100, B29C 6334, B29C 6722

Patent

active

047734507

ABSTRACT:
Pipes or pipelines for transporting sewage, water, slurries, liquid and gaseous hydrocarbons, and the like are interlined with flexible composite tubular lining material. The lining material is matched to the crosswise dimension of the pipe and is adapted to be insertable thereinto and to fit snugly against the inner wall thereof. The lining material comprises a flexible matrix member having a netlike open-meshed configuration, thereby being adapted to receive into its interstices foamable material adapted to expand outwardly upon foaming, into and about irregularities in the wall surface, and to solidify there. The matrix member preferably is extensible lengthwise, and thus reducible in size crosswise, when under axial tension. When released from axial tension, the matrix member recovers to its previous dimensions, except as it may be confined, as against an inside wall of a pipe or pipeline. An inner skin layer contiguous with the matrix member, and (at the user's option) an outer skin layer, complete the lining material. The lining may be applied either before a pipe or pipeline is placed in service or afterward--and either in situ or whenever a length of pipe is removed for maintenance or repair.

REFERENCES:
patent: 4368091 (1983-01-01), Ontsuga et al.
patent: 4386628 (1983-06-01), Stanley
The Encyclopedia of Patent Practice and Invention Management, Robert Calvert, Edt., New York, Reinhold, .COPYRGT.1964, pp. 131-142.

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