US Patent Issued to Brandenburger Liner on April 22 for "Lining tube for restoring defective sewer shafts including a berm and a channel, and method for producing same, and method for lining a defective sewer shaft" (German Inventor)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,742, issued on April 22, was assigned to Brandenburger Liner GmbH & Co. KG (Landau, Germany).

"Lining tube for restoring defective sewer shafts including a berm and a channel, and method for producing same, and method for lining a defective sewer shaft" was invented by Johannes Buss (Hohberg, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A lining tube for restoring a defective sewer shaft has an inner film tube and a radially expandable tubular layer of fiber material impregnated with a curable reaction resin. The inner film tube has a connecting portion that connects two circumferential portions, to a circumferentially closed inner film tub...