ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,397,767, issued on Aug. 26, was assigned to HITACHI ASTEMO LTD. (Ibaraki, Japan).
"Disc brake" was invented by Takayasu Sakashita (Hitachinaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A disk brake includes: a piston, which has a bottomed cylindrical shape, and is configured to press braking members against a braked member; a thrust member configured to thrust the piston through rotation of a rotary member configured to be driven by an electric machine; a rotation stopping member configured to restrict rotation of the thrust member relative to the piston; an engaging portion, which is on an inner side of the piston, and is configured to rest...