Magnetic field generating apparatus
US5438264A · kind A · utility
10Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1993 |
| Grant date | Aug 1, 1995 |
| Priority date | — |
| Expiry date | Jun 29, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/383
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnetic field generating apparatus has a hollow permanent magnet formed of a plurality of permanent magnet elements arranged to have a polygonal section. Magnetization directions of the end portions of the hollow permanent magnet in its longitudinal direction are made different from those of the central portion thereof so that the magnetic field generated in a predetermined region in the hollow space of the permanent magnet is increased as compared with a case where the magnetizations of the hollow permanent magnet are all directed in the same direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.