Independent clamping spacers in a disc drive assembly
US6462902B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1999 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Jun 4, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/038
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and method for individually clamping discs in a disc stack assembly to improve mechanical shock resistance of a disc drive. A clamping spacer includes a circumferentially extending body portion having a hub contact surface rigidly affixable to a hub of a spindle motor used to rotate first and second discs. The clamping spacer further includes top and bottom spring flanges which extend radially from the body portion away from the spindle motor hub so that the body portion and the spring flanges form a generally c-shaped cross-section. When the body portion is affixed to the spindle motor hub above the first disc and below the second disc, the bottom spring flange exerts a first axially directed clamping force upon the first disc and the top spring flange independently exerts a second axially directed clamping force upon the second disc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.