Method and device for lining a lateral sewer pipe
AssigneeLiqui-Force Sewer Services Inc.
InventorDarcy Warren
Life of this patent
Estimating the term…
Abstract
An assembly for introducing a pipe liner into a branch line includes a launcher defining a passageway through which a resin impregnated pipe liner and bladder tube assembly passes. An inflatable member mounted to the launcher assembly is actuatable between an inflatable condition and a deflated condition. The pipe liner and bladder tube are secured in place by expanding the inflatable member outward against the inner surface of the branch line. Air pressure drives the bladder tube and pipe liner into the branch line. The bladder tube remains in place until the pipe liner hardens.
Claims18
An assembly for introducing a pipe liner into a branch pipe, said assembly comprising;
- a launcher defining a passageway through which said pipe liner passes;
- an inflatable member attached to said launcher and actuatable between an inflated and deflated condition, said inflatable member including an outside diameter corresponding with an inner diameter of said branch pipe and a width defined by a portion of said launcher, said inflatable member securing at least a part of said launcher within the branch pipe in said inflated condition.
A method of installing a pipe liner within a branch pipe comprising the steps of;
- positioning one end of the pipe liner over an inflatable member attached to a retainer and actuatable between inflated and deflated conditions;
- placing the retainer member within a branch pipe;
- and
- inflating the inflatable member to said inflated condition to secure the pipe liner between the inflatable member and an inner surface of the branch pipe.
Dependencies are inferred from the claim text.