Linear motor with stacked electromagnets
US11456655B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2019 |
| Grant date | Sep 27, 2022 |
| Priority date | — |
| Expiry date | May 29, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Embodiments described include a electrical linear motor comprising a stator and an actuation shaft movable in a linear axial direction with respect to the stator. The stator comprising a casing, an electromagnet array mounted in the casing. The electromagnet array comprising a central orifice extending in the linear axial direction within which the actuation shaft extends. The actuation shaft comprising a permanent magnet arrangement comprising a plurality of magnetic pole segments. The electromagnetic array comprising a plurality of electromagnets to generate a magnetic field that in conjunction with the magnetic field of the permanent magnet arrangement generates an electromotive force between the stator and actuation shaft having a component in the axial direction to drive the actuation shaft relative to the stator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.