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:
Aug. 12, 2025
Filed:
May. 17, 2024
Chicony Electronics Co., Ltd., New Taipei, TW;
Ho-Chin Tsai, New Taipei, TW;
CHICONY ELECTRONICS CO., LTD., New Taipei, TW;
Abstract
A roller input device includes a base, a roller, a magnetic assembly, and a magnetic-conductive element. The roller is rotatably disposed on the base and includes a main body and magnetic protrusions arranged around a peripheral portion of the main body. The magnetic assembly is disposed on one side of the base and includes an electromagnet and a permanent magnet. The electromagnet includes a coil. The magnetic-conductive element is disposed on the base and between the roller and the magnetic assembly, and a side surface of the magnetic-conductive element facing the roller has a convex portion. When the electromagnet is in a first mode, the coil conducts a forward current, so that the magnetic-conductive element is magnetized to have a magnetic property. When the electromagnet is in a second mode, the coil conducts a reverse current, so that the magnetic-conductive element does not have the magnetic property.