Magnetic field generating device and method of shimming thereof
US7019609B2 · kind B2 · utility
3Cited by
4References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2004 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Jun 21, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/0273
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnetic field generating device is disclosed having an arrangement of permanent magnets, each permanent magnet (PM) having a north end and a south end, and each aligned in the same north-south orientation. The PM arrangement is configured to have a surface at the north polarity end, a surface at the south polarity end, or a surface at both ends. A layer of ferromagnetic material is securely disposed at one of the surfaces of the PM arrangement, the layer having a thickness equal to or less than about 15 millimeters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.