US Patent Issued to Brandenburger Liner on July 1 for "Lining tube for restoring defective sewer shafts and method for producing and installing such a tube" (German Inventors)

ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,010, issued on July 1, was assigned to Brandenburger Liner GmbH & Co. KG (Landau, Germany).

"Lining tube for restoring defective sewer shafts and method for producing and installing such a tube" was invented by Stefan Blenke (Landau, Germany) and Milan Ebeling (Landau, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A lining tube for restoring a defective sewer shaft which has a first shaft portion of a first diameter and an adjoining second shaft portion of an larger diameter. The lining tube has inner film tube and a radially expandable layer of fibrous material around the inner film tube and impregnated with a curable reactive resin. The in...