ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,771, issued on May 20, was assigned to igus GmbH (Cologne, Germany).

"Energy chain and storage unit for an energy chain" was invented by Dominik Barten (Meckenheim, Germany) and Andreas Hermey (Hennef, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "An energy chain and storage unit for an energy chain having a first chain portion and a second chain portion each including pivotable chain links with upper and lower narrow surfaces, and two side parts (6, 7). At least some of the chain links (2) of the first chain portion (3) have guide elements (12), which project outwards from the side parts (6, 7) allowing the chain links to guide on guide tr...