Disk drive apparatus
US5822151A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1996 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Jul 9, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides an improvement to a clamp in a disk drive. Insertion holes are formed in the clamp, and screws are inserted into the insertion holes to fasten the clamp to the spindle. The bottom of the screw head contacts the clamp surface to apply a force to the clamp. However, the clamp does not contact the entire bottom surface of the screw head. Only a portion of the bottom surface of the screw head contacts the clamp to apply a force to the clamp. Since the force caused by tightening the screw is applied only to the area contacting the screw, the force diffuses in a non-contact area in an outer portion of the clamp. Therefore, disk distortion and deformation are decreased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.