Electric hand-held power tool with a shut-off delay device
US8305042B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2007 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Jul 17, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a handheld electrical machine tool having at least one electrical drive, at least one electrical device requiring electrical energy for its operation, a shut-off delay apparatus for the electrical drive and/or the electrical device and having at least one rechargeable battery for the electrical supply to the drive and the electrical device. Provision is made for the handheld electrical machine tool to have an exhaustive discharge protection apparatus (8), which predetermines the delay time (t) of the shut-off delay apparatus (3) as a function of the state of charge of the rechargeable battery (9) detected by it. In addition, the invention relates to a corresponding method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.