ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,065, issued on May 20, was assigned to TOYOTA JIDOSHA K.K. (Toyota, Japan).
"Quaternion joint" was invented by Kazutoshi Nishii (Toyota, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A quaternion joint includes a first member, a second member rotatably connected to the first member through links, a plurality of first pulleys provided on the end face of the first member so that the first pulleys are able to swing, a plurality of second pulleys provided on the end face of the second member facing the end face of the first members so that the second pulleys correspond to the first pulleys and so that the second pulleys are able to swing, and a p...