Electromagnetic actuator for a display with improved spring arrangement and output device with said actuator
US11948549B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2020 |
| Grant date | Apr 2, 2024 |
| Priority date | — |
| Expiry date | Jun 6, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/15
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to an electromagnetic actuator, which is designed to be connected to a backside of a plate like structure and which comprises an annular coil arrangement and a magnet system being designed to generate a magnetic field transverse to the annular coil arrangement. The annular coil arrangement and the magnet system are connected to each other by a plurality of springs, which are arranged inside of the annular coil arrangement. Furthermore, the invention relates to an output device, comprising a plate like structure and an electromagnetic actuator of the above kind connected to a backside of the plate like structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.