High intensity radial field magnetic array and actuator
US6876284B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2004 |
| Grant date | Apr 5, 2005 |
| Priority date | — |
| Expiry date | Jul 27, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/122
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
At least one set of two nested magnetic arrays is provided, each nested magnetic array having an outer magnet, a middle magnet, and an inner magnet. The outer magnet has a magnetization pointing in an at least partially axial direction. The middle magnet has a magnetization substantially perpendicular to the magnetization of the outer magnet. The inner magnet has a magnetization directed substantially anti-parallel to the magnetization of the outer magnet. The apparatus also includes at least one electrically conductive coil positioned at least partially between the two nested magnetic arrays. At least one substantially magnetically permeable object is positioned at least partially between the two nested magnetic arrays. A rod is integral with the substantially magnetically permeable object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.