Shrouding a data storage disc with disc facing surfaces that define protuberant features
US8885288B2 · kind B2 · utility
0Cited by
21References
18Claims
0Family size
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Key dates
| Filing date | Dec 15, 2007 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Nov 15, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/148
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Shrouding a disc to attenuate excitation energy of windage created by rotating the disc, with a shroud defining an edge-wise gap between the shroud and the disc, and the shroud further defining surface-wise gaps between the shroud and opposing disc surfaces, wherein the surface-wise gaps are characterized by opposing parallel surfaces having protuberant features depending therefrom toward each other that define minimum clearances with the disc surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.