The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 2026
Filed:
Sep. 05, 2025
Topray Mems Inc., Hsinchu City, TW;
Chin-Sung Liu, Hsinchu City, TW;
Chi-Ling Chang, Hsinchu City, TW;
Hsiao-Ming Chien, Hsinchu City, TW;
TOPRAY MEMS INC., Hsinchu City, TW;
Abstract
A mouse scroll wheel mechanism includes a scroll wheel base, a vertically rotatable scroll wheel body, and a fixed base. The scroll wheel body is mounted on the scroll wheel base and defines a central accommodation space. A plurality of radially arranged guide grooves are formed in the scroll wheel body, each guide groove including at least one magnetic conductive member movable toward or away from the center of the scroll wheel body. The fixed base is secured to the scroll wheel base and positioned within the accommodation space. The fixed base includes at least one magnet disposed in a non-contact manner facing the guide grooves. As the scroll wheel body rotates, changes in rotational speed cause variations in magnetic force between the magnet and the magnetic conductive members, producing either an intermittent detent sensation or a free-spinning flywheel sensation for the user.