ALEXANDRIA, Va., July 16 -- United States Patent no. 12,360,617, issued on July 15, was assigned to Primax Electronics Ltd. (Taipei, Taiwan).
"Roller module" was invented by Chun-Nan Su (Taipei, Taiwan), Chun-Che Wu (Taipei, Taiwan), Kai-Wen Lee (Taipei, Taiwan), Chien-Pang Chien (Taipei, Taiwan), Li-Kuei Cheng (Taipei, Taiwan) and Shao-Ju Yen (Taipei, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A roller module for a mouse includes a roller, a ratchet assembly and a counterweight assembly. The ratchet assembly and the counterweight assembly are installed in the roller. When the roller is rotated at a slow speed, the magnet blocks in the counterweight assembly and the magnetic ratchet are magnetical...