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. 10, 2004
Filed:
Aug. 21, 2002
Tomokuni Wauke, Fukushima-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A chucking device for a magnetic disk that includes a substantially disk-shaped bearing and a drive arm extending in a rear side of a rotor yoke along a circumferential direction and loosely suspended from and held by a rotor yoke on both ends. An inner peripheral surface for restraining movement toward a bearing is formed at the drive arm, and a drive pin loosely passing through a drive pin through hole of the rotor yoke to extend upward and loosely inserted into a drive hole of a magnetic disk is formed at a front part of the drive arm in a rotor yoke rotation direction. When the rotor yoke having the magnetic disk placed thereon is rotated, the inner peripheral surface of the drive arm comes away from the bearing, and the drive pin comes in contact with a front edge and an outside edge of the drive hole.