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:
Jul. 15, 2025
Filed:
Sep. 26, 2024
Primax Electronics Ltd., Taipei, TW;
Chun-Nan Su, Taipei, TW;
Chun-Che Wu, Taipei, TW;
Kai-Wen Lee, Taipei, TW;
Chien-Pang Chien, Taipei, TW;
Li-Kuei Cheng, Taipei, TW;
Shao-Ju Yen, Taipei, TW;
Primax Electronics Ltd., Taipei, TW;
Abstract
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 magnetically attracted by each other. Consequently, a stepped rotation feel is provided. When the roller is rotated at a fast speed, the magnet blocks are moved with the corresponding counterweight blocks in the counterweight assembly and gradually moved away from the magnetic ratchet along a radial direction. Consequently, a non-stepped rotation feel is provided.