Actuator
US9331529B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2013 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Nov 12, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/1672
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An actuator includes: a coil; a permanent magnet rotor secured to and rotatably supported by an output shaft inside the coil; a bobbin made of a non-magnetic material and around which the coil is wound; a first stator inserted into and secured to the bobbin in one direction, and including an inner magnetic pole portion and an outer magnetic pole portion extending inside and outside the coil in an axial direction of the rotor, respectively; and a second stator inserted into and secured to the bobbin in a direction opposite to the one direction, and including an inner magnetic pole portion and an outer magnetic pole portion extending inside and outside the coil in the axial direction of the rotor, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.