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:
Mar. 09, 2004
Filed:
Sep. 26, 2000
Applicant:
Inventor:
Hiroyuki Hagiwara, Utsunomiya, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 2/504 ;
U.S. Cl.
CPC ...
G11B 2/504 ;
Abstract
A shaft which alternately stacks and holds disks and spacers is rotated by a motor having a rotor and stator. To prevent axial run-out during rotation, when the disks and spacers are fitted on the shaft, clean air is injected from an air pad to prevent eccentricity by a fluid film, and an aligning shaft is pressed against a hub on the upper end of the shaft via an air pad to attain alignment.