Discriminating charger and compatible battery
US5443924A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1992 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | Oct 29, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A charger for a rechargeable alkaline manganese (RAM) battery has a positive contact which engages against the positive terminal of a compatible battery without making electrical contact with the positive terminal protruding nubbin. A rechargeable battery has an insulating jacket which surrounds the battery side wall but which does not overlap the positive terminal. Hence the charger positive contact may engage against the specially adapted battery and electrical contact, but will not make electrical contact with a conventional battery having a partially insulated positive terminal. Alternatively, the battery positive terminal may be insulated within less than 0.040 inches of the battery perimeter and be charged by protruding positive contacts spaced inwardly from the perimeter by approximately the same amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.