Charging apparatus for wireless device with magnetic lead switch
US5874723A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1997 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Feb 12, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A charging apparatus suitable for use with a wireless device, which is capable of eliminating the occurrence of an electric shock and an electrical short due to an operator's contact with charging terminals of the wireless device upon non-charging of the wireless device. The charging apparatus comprises a charger including a wireless device placement portion, a pair of charging terminals exposed to the wireless device placement portion, a charging circuit portion for supplying power for charging the wireless device to the charging terminals, and a built-in magnet; and the wireless device including a secondary battery, a pair of power receiving terminals respectively provided at positions where they are brought into contact with the charging terminals when the wireless device is placed in the wireless device placement portion, and a magnetic switch. When the wireless device is placed in the wireless device placement portion and the magnetic switch detects magnetism of the magnet, the secondary battery is electrically connected to the pair of power receiving terminals so as to charge the secondary battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.