Multi-layer housing structure with tuned layers using hypothetical modeling
US6954328B2 · kind B2 · utility
8Cited by
30References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2001 |
| Grant date | Oct 11, 2005 |
| Priority date | — |
| Expiry date | May 7, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and method for reducing generation of acoustic noise in a disc drive. A multi-layer disc drive housing structure includes a housing layer, a plurality of rigid damping layers and a corresponding plurality of interposed visco-elastic damping layers. Characteristics of the various layers are selected by evaluating hypothetical models each having first, second and third theoretical layers, at least one of which is a composite layer made up of multiple layers. Loss factor profiles are evaluated in relation to housing layer resonant frequency to provide an optimum multi-layer structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.