Disc driving apparatus
US6799324B1 · kind B1 · utility
5Cited by
9References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1998 |
| Grant date | Sep 28, 2004 |
| Priority date | — |
| Expiry date | Apr 16, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/0284
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disc driving apparatus is provided with: a turn table on which a disc type record medium is loaded; a clamper opposed to the turn table for clamping the disc type record medium on the turn table by means of a magnetic force applied between the turn table and the clamper; and a spindle motor for rotationally driving the turn table. The clamper has at least 3 abutting portions for abutting to the disc type record medium such that only one of the abutting portions is respectively on a line passing through a center of the clamper in a plain parallel to a record surface of the disc type record medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.