Rechargeable electric tool
US7817053B2 · kind B2 · utility
5Cited by
11References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2005 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Sep 7, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rechargeable electric tool includes a warning device which monitors a voltage of a power source battery and indicates a warning by means of an LED or a buzzer when the power source voltage is reduced to be equal to or lower than a reference voltage. The tool is configured such that, even when the warning is indicated, a control to interrupt a power supply to a motor is not performed, thereby enabling a usual operation in response to an activating operation on a trigger switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.