Electromagnetic rotary drive and rotational device
US10707734B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2017 |
| Grant date | Jul 7, 2020 |
| Priority date | — |
| Expiry date | Jan 17, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K21/44
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electromagnetic rotary drive includes a contactlessly magnetically drivable rotor that is coil-free and free of permanent magnets and that includes a magnetically effective core, and a stator by which the rotor is contactlessly magnetically drivable about a desired axis of rotation in the operating state. The stator has a plurality of coil cores of which each includes a bar-shaped longitudinal limb extending from a first end in a direction in parallel with the desired axis of rotation up to a second end, all the first ends being connected by a reflux of windings generate an electromagnetic rotational field of which each surrounds one of the longitudinal limbs. The coil cores include a plurality of permanent magnets by which a permanent magnetic pre-magnetization flux can be generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.