ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,152, issued on June 3.
"Code wheel combination lock" was invented by Yijian Li (Xiamen, China) and Shaolian Lin (Xiamen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed in the present invention is a novel code wheel combination lock, comprising a knob and a face plate that can rotate with respect to each other, a lock tongue, and a code wheel assembly. The code wheel assembly comprises a base having an accommodation cavity, a code wheel shaft, several sets of bushings and code wheels, a reset mechanism, a positioning member, and a protection frame; the base is mounted on the face plate; the code wheel shaft passes through a movement ca...