In March, LMK Enterprises Inc. was awarded U.S. Patent No. 7,343,937 for cured-in-place pipe (CIPP) lateral lining through a cleanout with no digging or cutting required.

The lining is typically positioned within a translucent bladder (or connected to a positioning hose) and vacuum impregnated. Next the liner/bladder assembly is inverted through the cleanout and directed upstream or downstream by use of a guide shoe. Only the bladder is located within the cleanout since the liner does not begin to invert until it is positioned within the horizontal lateral pipe. The process includes the use of a camera port which allows a lateral push camera to be inserted inside the translucent bladder, providing visual verification of the liner placement prior to curing.

The system allows for installation from one access point, typically from an outside cleanout or an inside cleanout, normally located in the basement. The installer can determine the placement of the lining by where they position the liner within the bladder. Scenario one describes how the system could work from a basement and save a lot of extra time and money.

LMK is making this new patented technology available to all lining companies. For more information, contact LMK Enterprises Inc. at (888) 433-1275 or visit its Web site at

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