One-step processing of magnet arrays
US11417462B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2019 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Jul 10, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F41/0206
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of forming an annealed magnet includes positioning a magnetizing array ring concentrically with a ring of bulk magnetic material to form an assembly, the magnetizing array ring having a magnetic field defining directions for orienting grains of the ring of bulk magnetic material, placing the assembly in a furnace, and operating the furnace to anneal the ring of bulk magnetic material and grow the grains in the directions. A magnetic array assembly includes a furnace; and an assembly including (i) a ring of bulk magnetic material having grains and (ii) a magnetizing array ring concentric with the ring of bulk magnetic material, and having a magnetic field defining directions for orienting the grains during growth thereof in a presence of heat from the furnace.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.