Contamination mitigation cap for a hard disk drive actuator pivot assembly
US9245546B1 · kind B1 · utility
0Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2015 |
| Grant date | Jan 26, 2016 |
| Priority date | — |
| Expiry date | Mar 9, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/4813
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A contamination mitigation cap for a hard disk drive actuator pivot assembly is affixed to the rotatable carriage of an actuator assembly and, in conjunction with a bearing hub cap, forms a labyrinth seal for retaining pivot bearing contamination. Consequently, the risk of such contamination migrating to the head-disk interface and causing read/write problems is mitigated, especially in the context of sleeveless pivot bearing assemblies. Various shapes of the contamination mitigation cap may be utilized, such as a flat ring, an S-section ring, and an L-section ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.