ALEXANDRIA, Va., March 3 -- United States Patent no. 12,567,661, issued on March 3, was assigned to Schleifring GmbH (Furstenfeldbruck, Germany).

"Rotary transmission system using a waveguide" was invented by Christian Panhans (Augsburg, Germany) and Reinhard Stolle (Aresing, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A coupler provides a high speed datalink between rotatable parts, which includes comprising a circular gap shaped as a hollow-cylindric volume and at least two antennae. The gap is formed between a first ring and a second ring rotatable against the first ring. A first antenna is mechanically coupled to the first ring and a second antenna is mechanically coupled to the second ring. T...