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:
Jun. 20, 1995
Filed:
Feb. 25, 1993
Applicant:
Inventors:
Assignee:
Nippon Densan Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 9808 ; 360 9912 ;
Abstract
A disk drive apparatus in which a hard disk is fitted on a disk-fitting outer peripheral portion of a rotor hub. A gap is defined on the outer periphery of the rotor hub such that the axial height of the gap decreases radially inward. An elastic ring member, which is appropriately tensed in the circumferential direction, fits in the gap so as to exert a contracting force which serves to clamp the hard disk between itself and a disk supporting surface. The hard disk can be securely and easily fixed to the rotor hub with uniform application of the clamping pressure over the entire circumference, even when the axial height of the whole disk drive apparatus is reduced.