ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,393,291, issued on Aug. 19, was assigned to Primax Electronics Ltd. (Taipei, Taiwan).
"Roller module and input device with same" was invented by Chun-Nan Su (Taipei, Taiwan), Chun-Che Wu (Taipei, Taiwan), Chien-Pang Chien (Taipei, Taiwan), Kai-Wen Lee (Taipei, Taiwan) and Li-Kuei Cheng (Taipei, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A roller module includes a scroll wheel, a magnetization member, a swinging element and a pole-reversible magnetic element. The magnetization member is synchronously rotated with the scroll wheel. The swinging element includes a pivotal part, a first magnetic element and a second magnetic element. The first ma...