Multilayer acoustic damper for a disc drive
US6536555B1 · kind B1 · utility
36Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2000 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Oct 10, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B25/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disc drive top cover incorporates an acoustic damper having alternating constraining layer material and damping layer material. Each constraining material layer is a sheet material having a high mechanical stiffness. Each damping material layer is a visco-damping adhesive having a pre-selected maximum damping efficiency for a particular disc drive operating condition. The acoustic damper may also include a carrier layer between damping layers so that multiple layers of damping material can be incorporated between any two constraining layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.