Plastic and nonmetallic article shaping or treating: processes – Repairing or restoring consumer used articles for reuse
Patent
1987-07-28
1989-09-19
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Repairing or restoring consumer used articles for reuse
264269, 264322, 264516, 425384, 4253871, 425503, 156287, 138 97, B29C 3100, B29C 5308, B29C 6334
Patent
active
048679216
ABSTRACT:
A thermoplastic pipe in a flattened and folded shape and of selected characteristics is formed by manufacturing it in this reduced shape. It is inserted in the flattened and folded shape and in a pliable state into a pipeline to be lined. It is then expanded and when set serves as a rigid or semi-rigid pipe within a pipeline capable of withstanding external hydrostatic and earth pressures. The thermoplastic pipe is heated during its installation for installing it into an existing pipeline and for expanding it.
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Kaplan Blum
McCarthy Neil M.
Nu-Pipe, Inc.
Silbaugh Jan H.
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