F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 55/18 (2006.01) B29C 53/08 (2006.01) B29C 63/34 (2006.01)
Patent
CA 2398542
A machine and method for providing a folded liner for insertion into a pipe, comprises an upper section and a lower section. A flattened heated thermoplastic liner is fed downwardly through the upper section to the lower section, where it is redirected and fed substantially horizontally from the lower section. The flattened liner introduced to the upper section is broadly indented at one side of the liner and is then folded to provide loops disposed side-by-side in a substantially horizontal direction. A stabilizing assembly constrains the loops to maintain a desired orientation of the folded liner. The lower section redirects the liner so that the loops are stacked side-by-side in a substantially vertical direction. The liner is cooled as its leaves the lower section to maintain its cross-sectional configuration. The upper section is separable from the lower section, and portions of the upper and lower sections are displaceable and removable to facilitate insertion of the liner into the machine and removal of the machine from the liner.
American Pipe & Plastics Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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