Method to improve crown sigma control of the slider in a hard disk drive
US7562435B2 · kind B2 · utility
7Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2005 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Dec 6, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1994
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The sensitivity of the ABS shape of a suspension mounted slider to temperature variations can be greatly reduced if the backside of the slider is lapped to a smooth convex contour that is similar to the ABS shape, rather than to a planar shape, prior to mounting the slider on the suspension. When the backside surfaces of sliders are shaped in this manner, the size of changes in the crown height of the ABS shape due to temperature variations are greatly reduced and the ABS shapes are distributed more tightly, thereby increasing disk drive reliability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.