Degaussing apparatus
US7324321B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 22, 2006 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Aug 22, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/0245
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A degaussing apparatus having permanent magnets employing common center poles arranged to obtain a flux level gauss of twice the normal level by arranging permanent magnets to create an enhanced center pole effect having an increased flux path as compared to the use of complimentary permanent magnets. The magnets are rotatably mounted in a nonferrous housing allowing placement of magnetic materials, such as a hard drive, thereon. The magnets are rotated within the housing by use of an electric drive motor. The magnets are maintained a predetermined distance from the magnetic materials to be degaussed by use of a spacer, preferably a series of rollers. In operation, the magnetic material is placed upon the housing and upon operation of the electric drive motor, the magnets are rotated in a 360° pattern causing degaussing of the magnetic material and complete destruction of hard drive heads and coils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.