Linearly enhanced circular magnetic field actuator
US11094440B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2020 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | Mar 30, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N35/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus may include a rotatable permanent magnet exhibiting a magnetic field. Alternatively, the actuation apparatus may include a set of coils configured to generate a rotatable magnetic field. The apparatus may further include a magnetic shape memory (MSM) element including MSM material and having a long axis, where the MSM element is configured to contract locally in a first part in response to local exposure to a first component of the magnetic field that is substantially perpendicular to the long axis and to not contract locally in a second part that is exposed to a second component of the magnetic field that is not substantially perpendicular to the long axis. The apparatus may include a first fixed magnet positioned at a first end of the MSM element and a second fixed magnet positioned at a second end of the MSM element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.