Portable engine generator
US5239253A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 1991 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Dec 24, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/093
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A portable engine generator includes an overcurrent detector which detects load current to determine whether the engine is in an overcurrent state. A voltage detector detects output voltage from the engine generator. A timer circuit starts to operate when the overcurrent state is detected by the overcurrent detector and continues to operate while the overcurrent state continues to be detected. The timer circuit starts to output a signal for interrupting the supply of output power when a predetermined time period has elapsed after the start of operation thereof. The predetermined time period is set to a shorter time period as the output voltage detected by the voltage detector assumes a lower value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.