An electric power tool has a motor-driven circular tool that can be clamped by means of a clamping device. A mechanical braking device (2) serves to brake the tool. A safety element (4) prevents improper handling of the electric power tool. In a safety position, the safety element (4) prevents the motor...http://www.google.de/patents/US20050092149?utm_source=gb-gplus-sharePatent US20050092149 - Electric power tool with locking mechanism
