Apparatus for centering and clamping an information recording disk in a data storage device
US4502136A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1983 |
| Grant date | Feb 26, 1985 |
| Priority date | — |
| Expiry date | Apr 4, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/0284
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The centering and clamping device consisting: a disk elevator, a disk support, a disk centering assembly, a disk clamping assembly, and a disk rotating assembly. In operation the disk is raised out of the disk insert tray cartridge by the disk elevating means and raised upward to engage a taper on the spindle of the device spin motor, moving upward until the cooperation between the taper on the neck spindle and the tapering on the disk centering collar cause the disk to move laterally until precisely centered on the spindle. Thereafter, the continued upward movement on the disk on the elevator lifting assembly causes a magnet located on the disk support means to come into magnetic contact with a steel plate on the spindle platform, thereby securely clamping the disk to the spindle for rotation. Thereafter, the elevator moved downward and clamping the disk from disk support means, thereby allowing the free rotation of the spindle disk and disk support assembly relative to a stationary elevating means. For removal, the above described procedure is reversed with the elevator moving slightly upward clamping into the disk support assembly, thereby the entire assembly moving downward rem…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.