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US 2002/0163102 A1Published application
Machine and method for providing folded pipe liners
AssigneeAmerican Pipe & Plastics, Inc.
InventorMark Thompson
Life of this patent
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AssigneeAmerican Pipe & Plastics, Inc.
InventorMark Thompson
Estimating the term…
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 more acutely indented to provide loops disposed side-by-side in a substantially horizontal direction. The lower section reorients the loops so that they 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.
A machine for supplying folded tubing, comprising:
A method of providing folded tubing, comprising:
A machine for supplying folded tubing, comprising a casing through which flexible tubing is fed downwardly and in which the tubing is folded so that a cross-sectional configuration of the tubing is changed from a flattened configuration broadly indented at one side to a folded configuration having an opening defining a groove extending longitudinally of the tubing at said one side.
In a machine for supplying a folded tubular liner to a pipe and in which a tubular liner is folded so as to provide a longitudinal groove at one side of the folded liner, a casing constructed for removable insertion in a manhole and having an inlet through which the folded liner is fed substantially vertically and an outlet through which the folded liner is fed substantially horizontally, the casing having a structure therein that guides the folded liner from the inlet to the outlet along a path that extends at an angle to the substantially vertical and substantially horizontal feed directions, and with the groove facing towards a same side of the casing as the liner is fed through the casing.
A method of providing a folded liner to a pipe leading from a lower portion of a manhole, comprising:
Dependencies are inferred from the claim text.