Magnetic storage device with dual stage humidity control
US8599515B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 8, 2011 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Mar 21, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/4145
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Approaches for desiccant device having a dual stage humidity control for use within sensitive electronic equipment. Electronic equipment, such as a hard-disk drive (HDD), may comprise a desiccant device that comprises a first absorbing portion that comprises a first desiccant material and a second absorbing portion that comprises a second desiccant material. The first absorbing portion possesses a relatively rapid permeation rate for water vapor, while the second absorbing portion possesses a relatively low permeation rate for water vapor. The first desiccant material may have a relatively high rate of water vapor absorption, while the second desiccant material may have a relatively low rate of water vapor absorption. In this way, embodiments allow for the sensitive equipment to be dried out rapidly in manufacturing and yet have a slow reversible water absorption rate during operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.