Electrically driven magnetic shape memory apparatus and method
US10535457B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2016 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | Jul 9, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N35/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An actuation apparatus may include a magnetic shape memory (MSM) element configured to compress locally at a portion of the MSM element in response to a perpendicular concentrated portion of a magnetic field. The apparatus may further include a plurality of conductive coils laterally offset from the MSM element. Central axes of each conductive coil of the plurality of conductive coils may be substantially parallel to a longitudinal axis of the MSM element. The apparatus may also include at least one permanent magnet in proximity to the MSM element. The permanent magnet may generate a significant portion of the magnetic field. By successively applying, reversing, and reducing or eliminating electrical currents applied to the conductive coils, a position of the perpendicular concentrated portion of the magnetic field may be moved relative to the MSM element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.