Portable, rechargeable power supply
US4300087A · kind A · utility
54Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 27, 1979 |
| Grant date | Nov 10, 1981 |
| Priority date | — |
| Expiry date | Jul 27, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S320/29
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A portable power supply includes a rechargeable battery in a casing. Power is supplied from the battery to a socket by means of a D.C./A.C. voltage converter and a step-up transformer. When the socket is connected to an external source of power, the battery is charged by means of an additional winding in the transformer and a rectifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.