ALEXANDRIA, Va., June 17 -- United States Patent no. 12,311,537, issued on May 27, was assigned to ABB Schweiz AG (Baden, Switzerland).

"Seal structure for protecting a motor of a robot" was invented by Xiaodong Cao (Shanghai), Kaiwei Chen (Shanghai) and Jiajie Sha (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "According to implementations of the subject matter described herein, there is provided a robot. The robot includes a motor mounted on a frame; a driving member having a shaft portion mounted to the motor and an output portion configured to engage a downstream driving member; a seal ring coupled to the frame and having an inner annular portion; and a collar secured to the shaft portion and ha...