Energy dissipative device and method
US7009835B2 · kind B2 · utility
31Cited by
26References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2003 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Nov 22, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An energy dissipative element protects hard disk drives from shocks and vibrations. A closed elastic envelope houses a body of open cell foam, a volume of viscous liquid, and a compressible gas. Under compression or expansion of the foam, viscous liquid flows through cell orifices and thereby dissipates energy resulting from external force applied against the elastic wall. The energy dissipative elements are applied between a disk drive housing and an outer case to create a ruggedized portable disk drive module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.