Shock protection implemented in a balanced armature receiver
US11935695B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2021 |
| Grant date | Mar 19, 2024 |
| Priority date | — |
| Expiry date | Dec 23, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R25/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Various embodiments of balanced armature receivers are disclosed, where the receiver includes a yoke which retains permanent magnets, a coil assembly having a coil tunnel, and an armature coupled to the yoke, with a movable portion extending through the coil tunnel and an end portion that is free to deflect between the magnets when an excitation signal is applied to the coil assembly. There are a stationary protrusion which extends from the stationary portion of the receiver toward the movable portion of the armature, and a movable protrusion which extends from the movable portion of the armature toward the stationary portion of the receiver. The stationary and movable protrusions are offset laterally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.