Method and device for the construction and/or the reconditioning

Details Method and device for the construction and/or the reconditioning Method and device for the construction and/or the reconditioning

1990-04-19

1992-04-21

Taylor, Dennis L.

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

405146, F16L 5518

Patent

active

051062348

ABSTRACT:
A method and a device for the construction and/or the reconditioning of pipelines and conduits, by applying or forming around a sheath of impervious flexible material, a tubular member made from fabric or glass fibers or any other suitable material impregnated with a hardening resin. The impregnated tubular member is expanded and shaped by means of at least one expander formed by a tubular ring of resilient flexible material, of cylindrical shape, which has been pressurized so as to cause a fluid-tight squashing of its axial bore. By exerting a hydraulic or pneumatic pressure against one end of said expander, the latter is advanced along said tube with a rotary-translatory motion.

REFERENCES:
patent: 2745778 (1956-05-01), Garten
patent: 2861429 (1958-11-01), Duncan
patent: 3376180 (1968-04-01), Larson et al.
patent: 3662045 (1972-05-01), Tierling
patent: 4053343 (1977-10-01), Carter
patent: 4602974 (1986-07-01), Wood et al.
patent: 4770562 (1988-09-01), Muller et al.

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