Magnetic battery charging system for stylus
US9898098B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2014 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | Oct 1, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0042
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments are disclosed for a stylus comprising an energy storage device for powering active functionality of the stylus, and a charging circuit electrically coupled to the energy storage device and configured to provide charging current for recharging the energy storage device. The stylus further comprises a magnetically-attractable element comprising ferromagnetic material disposed in a ring formation on an outer surface of the stylus, the magnetically-attractable element being electrically coupled to the charging circuit to form a terminal of the charging circuit, and the magnetically-attractable element being configured to be received on a dock via magnetic attraction to a permanent magnet of the dock to bring the stylus into a docked position in which the magnetically-attractable element contacts a charging contact of the dock to thereby cause the charging circuit to receive charging current from the dock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.