ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,809, issued on Nov. 3, was assigned to TSUBAKIMOTO CHAIN Co. (Osaka, Japan).
"Selectable clutch" was invented by Yoshihito Shimanaka (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a selectable clutch with a simple structure, offers high responsiveness, operates with reduced backlash and noise, and allows switching with a light force even when a transmission torque is large. In each of rotation transmission paths provided with a first clutch mechanism capable of transmitting rotation between two rotation elements through the wedging effect and a frictional force of a locking member and a second clutch mechanism capable of tra...