Remotely addressable magnetic composite micro-actuators
US9281112B2 · kind B2 · utility
2Cited by
2References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2014 |
| Grant date | Mar 8, 2016 |
| Priority date | — |
| Expiry date | Jun 5, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F13/003
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention describes methods to fabricate actuators that can be remotely controlled in an addressable manner, and methods to provide remote control such micro-actuators. The actuators are composites of two permanent magnet materials, one of which is has high coercivity, and the other of which switches magnetization direction by applied fields. By switching the second material's magnetization direction, the two magnets either work together or cancel each other, resulting in distinct “on” and “off” behavior of the devices. The device can be switched “on” or “off” remotely using a field pulse of short duration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.