ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,460,665, issued on Nov. 4, was assigned to Hafele Berlin GmbH & Co KG (Berlin).

"Doubling-up fitting and assembly having two doubled-up plates" was invented by Gerd Sawatzki (Datteln, Germany) and Ulrich Merz (Regensburg, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A doubling-up fitting includes a clamp element with a clamp base and at least two clamp arms rising from the clamp base at its ends. The free clamp ends are angled inward and extend over the clamp base. A rotatably mounted spreading disc is arranged between the clamp base and the free clamp ends. A disc opening leads into a recess in the spreading disc where the diameter is greater ...