ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,715,412, issued on Aug. 25, was assigned to HITACHI ASTEMO LTD. (Ibaraki, Japan).
"Brake device" was invented by Daiki Nagata (Hitachinaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A planetary gear speed reducing mechanism installed in a disc brake as a brake device includes a small diameter shaft portion to which rotation from an electric motor is transmitted, and a sun gear to which rotation from the small diameter shaft portion is transmitted. The small diameter shaft portion has outer diameter that is smaller than tip diameter of the sun gear. It is therefore possible to reduce torque loss from the electric motor, for example, during ope...