ALEXANDRIA, Va., June 5 -- United States Patent no. 12,275,139, issued on April 15, was assigned to Kawasaki Jukogyo K.K. (Kobe, Japan).
"Wrist device and robot" was invented by Takeshi Shibata (Kobe, Japan) and Hitoshi Kudo (Kobe, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wrist device includes a first element coupled to an arm to be rotatable about a fifth axis, and a second element coupled to the first element to be rotatable about a sixth axis. There is a fifth motor to rotationally drive the first element, and a sixth motor to rotationally drive the second element. A fifth transmission mechanism transmits a driving force of the fifth motor to the first element and a sixth transmission mechan...