Electromagnetic sensor
US10459019B2 · kind B2 · utility
0Cited by
3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2018 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | May 5, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/063
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electromagnetic sensor includes a first magnetic pack unit and a first magnetic unit. The first magnetic unit forms a first magnetic pack, a second magnetic pack, and a third magnetic pack in a first direction. The structure of the electromagnetic sensor enables even and uniform distribution of the magnetic field on the electrode and provides a good sound effect under different frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.