Magnet, magnet stack, and motor
US11017928B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Sep 6, 2017 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Jan 26, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/2766
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a magnet, an insulating layer is fixed to an upper surface of the magnet provided with the insulating layer, but is not fixed to a lower surface of the magnet above the insulating layer. Therefore, even when the magnet expands or contracts due to a temperature change, stress is less likely to occur at an interface between the insulating layer provided on the upper surface of the magnet and the magnet above the insulating layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.