Method and apparatus for determining the remaining operating time of battery-powered appliances
US6344730B1 · kind B1 · utility
4Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2000 |
| Grant date | Feb 5, 2002 |
| Priority date | — |
| Expiry date | Apr 5, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/3835
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for determining the remaining operating time of an appliance powered by batteries or accumulators determine and indicate the remaining operating time by measuring and evaluating the battery voltage wherein an EEPROM is provided which stores the value of the battery voltage at the instant of switching off the appliance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.