Patent 7504791 was granted and assigned to Bosch on March, 2009 by the United States Patent and Trademark Office.
The invention relates to an electric power tool (1), having an electric motor (8) that serves to drive a tool (6). The electric power tool (1) is characterized in that a sensor unit (9) that detects the contact pressure of the tool (6) against a workpiece (7) cooperates with a signal transducer (10).