Plastic liner

Pipes and tubular conduits – Repairing

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Details

138 98, 264516, 264 36, 264269, B29C 6334

Patent

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056761759

ABSTRACT:
A plastic liner having a second, deformed shape, and having a memory of a first, undeformed memory shape, the deformation in the deformed shape comprising one or more deformations, at least one of which is a twist deformation consisting of alternate left-right twists along the liner.

REFERENCES:
patent: 4064211 (1977-12-01), Wood
patent: 4985196 (1991-01-01), LeDoux et al.
patent: 5091137 (1992-02-01), LeDoux

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