Method and system for monitoring gas in sealed hard disk drives with feedback
US8094409B2 · kind B2 · utility
14Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 2008 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Aug 15, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/148
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for monitoring the helium content of a disk cavity of a hard disk drive is disclosed. In one embodiment of the present invention, an oxygen sensor is placed in the disk cavity to monitor the level of oxygen in the cavity. With the measurement of oxygen in the disk cavity, the level of helium in the cavity is inferred. In one embodiment, if the amount of helium inferred from the oxygen level fell below 90%-95% of the gaseous content of the disk cavity, a user is automatically notified in order to maintain the hard disk drive in a timely manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.