Stiffened shaft bearing cartridge
US7952837B1 · kind B1 · utility
8Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2006 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Mar 28, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/4813
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention is a device for increasing the stiffness of a pivot bearing assembly generally employed along with an actuator assembly of a magnetic disk drive. More specifically, bearing cartridges generally used in the art, are modified with a smaller spacer and a stiffener that is associated with the shaft. This modification reduces the rotating mass of the actuator assembly and increases the stiffness of the pivot assembly about which it rotates, thereby yielding greater system performance by increasing a critical resonance mode frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.