Battery charging system distinguishing primary and secondary batteries
US7274168B2 · kind B2 · utility
39Cited by
42References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2003 |
| Grant date | Sep 25, 2007 |
| Priority date | — |
| Expiry date | Nov 3, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2225/31
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A remote battery charging system comprises an identifier (52) for identifying different battery types within a device (78) to a switch (46) for allowing or disallowing charging of the battery (13). The battery charging system is particularly suitable for hearing aids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.