Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Producing multilayer work or article
Patent
1995-02-27
1997-04-29
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Producing multilayer work or article
156287, 156294, 264269, B29C 6336
Patent
active
056246293
ABSTRACT:
A liner for a lateral pipe which leads into a main pipe having at one end a collar for installation at the location where the lateral liner meets the main, the collar extending along the interior of the main seating against the opening of the lateral. The liner mounted in a launching device is installed by everting the liner through an opening in the collar by means of fluid under pressure supplied through a pressure pipe in the launching device, the launcher held in position by an inflatable bladder which is inflated by said fluid, and against the collar for sealing the lateral/main pipe junction.
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Insituform (Netherlands) B.V.
Vargot Mathieu D.
Wolfson Michael I.
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