Power tool having an electric brake
US8466641B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2011 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Sep 24, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2209/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method for decelerating a drive movement of a power tool and to a power tool suitable for carrying out the method, having a drive driven by a motor, an energy supply device for the provision of electrical energy, a controller having a motor controller for activating the motor and an operating-state recognition module which is to detect at least one operating-state variable and, as a function of this, to output a brake signal, the controller being designed to initiate, as a function of the brake signal, a braking procedure in which brake cycles are provided which have a first time segment, in which the motor is short-circuited, and a second time segment in which current is fed to the motor opposite to its original direction of rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.