Recording disk apparatus and clamp therefor
US6504674B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1998 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Dec 9, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B25/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A recording disk apparatus includes a recording disk supported by a rotation axis. A clamp is fixed at the tip end of the rotation axis by screws so as to urge the recording disk against a flange at the base end of the rotation axis. The screws are disposed along an imaginary circle concentric to the rotation axis so as to fix a plane body of the clamp at the tip end of the rotation axis. A rigidity reduction mechanism reduces rigidity of the plane body at an intermediate area relative to the screw bore areas, which intermediate area is defined between the screw bore areas along the imaginary circle. The rigidity reduction mechanism serves to suppress the undulation of the magnetic disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.