Cordless power tool such as screwdriver, activates switch-off function when sudden increase in speed or sudden drop in torque occurs

摘要

The power tool includes a drive arranged in a housing. An automatic switch-off function is activated when the rotation speed suddenly increases and/or the torque suddenly falls. The drive may have an active brake which is activated by the switch-off function. An independent claim is included for a method of operating a cordless power tool.