ALEXANDRIA, Va., March 12 -- United States Patent no. 12,247,687, issued on March 11, was assigned to Per Aarsleff A/S (Viby J, Denmark).
"Assembly for relining a junction between a branch pipeline and a main pipeline, and for relining a part of or the whole branch pipeline" was invented by Mogens Pagter Rasmussen (Engesvang, Denmark), Bent Sloth Rasmussen (Kolding, Denmark) and Anna Amalie Larsen (Farvang, Denmark).
According to the abstract* released by the U.S. Patent & Trademark Office: "An assembly for relining a junction between a branch pipeline and a main pipeline comprises a seal installation device capable of moving within the main pipeline to the junction. The seal installation device includes a curable seal for being placed an...