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. 19, 2025
Filed:
Feb. 28, 2022
Uacj Corporation, Tokyo, JP;
Furukawa Electric Co., Ltd., Tokyo, JP;
Kotaro Kitawaki, Tokyo, JP;
Shinpei Todo, Tokyo, JP;
Ryohei Yamada, Tokyo, JP;
Hideyuki Hatakeyama, Tokyo, JP;
UACJ CORPORATION, Tokyo, JP;
FURUKAWA ELECTRIC CO., LTD, Tokyo, JP;
Abstract
A magnetic disk device includes a plurality of disk-shaped magnetic disks, spacers, a hub, a clamp, and a fastening member. Each of the magnetic disksincludes a through-hole in a center section thereof. Each of the spacersincludes a through-hole in a center section thereof, and is disposed among the magnetic disks. The hubis inserted into the through-holes of the magnetic disksand the spacers. The clamppresses and holds the magnetic disksand the spacers. The fastening memberfastens the clampto the hub. The clampis fastened to the hub by the fastening memberwith a torque of from 5 cN·m to 45 cN·m.