Disk rotating device
US6353591B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1999 |
| Grant date | Mar 5, 2002 |
| Priority date | — |
| Expiry date | Feb 9, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/24
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk rotating device containing: a rotating plate having a support part on which a disk is mounted, which a motor drives to rotate; a centering member provided on the center of the rotating plate and moveable in the direction of the rotational center axis of the rotating plate, which is inserted through the center hole of the disk to thereby center the disk; and an enabling member provided in a space between the rotating plate and the centering member, which projects out the centering member above the support part. Further, when the minimum value of the diameter of the center hole of the disk is given by Dmin and the maximum value thereof is given by Dmax, the maximum outer diameter &phgr;A of the centering member is set within a range of Dmin<&phgr;A<Dmax. Thus, the disk rotating device of the invention is able to function as the fixed type disk rotating device when the diameter of the center hole of a disk inserted is larger than the maximum outer diameter of the centering member (hub), and to function as the movable type disk rotating device only when the diameter of the center hole of a disk is smaller than the maximum outer diameter of the centering member. Accordingly, the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.