Single pulse degaussing device with rotary actuated chamber access doors
US10242699B1 · kind B1 · utility
4Cited by
20References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 2018 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | May 23, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A single magnetic pulse degaussing apparatus for use in erasing information contained on magnetic recording or storage media. A degaussing chamber for receipt of magnetic forces above 2.0 Tesla is accessible by upper and lower rotary actuated doors. The internal flux of a coil is measured by the current passing through the coil during the discharge cycle to provide a flux versus time measurements. The measurements are inserted into a performance verification algorithm to assure sufficient time for media destruction has taken place before releasing the media from the degaussing chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.