Electronic device with coil for wireless charging and haptic outputs
US11670962B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2020 |
| Grant date | Jun 6, 2023 |
| Priority date | — |
| Expiry date | Mar 23, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2400/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electronic watch may include a housing, a display positioned at least partially within the housing, a transparent cover coupled to the housing and at least partially covering the display, a battery, and a coil coupled to the battery and configured to, during a battery charging operation, supply a first current to the battery and, during a haptic output operation, receive a second current from the battery to produce a haptic output. The electronic watch may further include a ferromagnetic element positioned at least partially within the housing and movable relative to the housing. The second current may cause the coil to produce a magnetic field, and the haptic output may be produced as a result of an interaction between the magnetic field and the ferromagnetic element that causes the ferromagnetic element to move relative to the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.