ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,392, issued on Feb. 10, was assigned to KANZAKI KOKYUKOKI MFG. Co. LTD. (Amagasaki, Japan).
"Drum type transmission" was invented by Shuji Nishimoto (Amagasaki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "[Problem] To improve reliability of a park lock mechanism in a drum type transmission of an electric shift type with a simple constitution. [Solution] A drum type transmission includes a park lock mechanism having a park pawl engaged with or disengaged from a park concave-convex portion of a park gear relatively non-rotatably disposed on a transmission shaft, a park pawl operation member for engaging the park pawl with the park concave-con...