Patent ID: 7168502

Claim:
An electric power tool, including a hand-held circular saw and routing machine the power tool having a circular tool (T) motor-driven by an axially extending single part shaft ( 1 ) with a first end and a second end with the tool clamped to the first end of the shaft by a tool clamping device (C) actuated by a pivotally displaceable clamping lever ( 12 ) located adjacent the second end of said shaft ( 1 ), a mechanical braking device ( 2 ) mounted on the second end of said shaft and displaceable between a braking position and a release position and spaced axially from said tool clamping device (C), a switching member ( 3 ) spaced from the braking device ( 2 ) for turning the motor (M) on and off, a safety element ( 4 ) engageable by said switching member ( 3 ) and mechanically connected by an actuation part ( 5 ) to said braking device ( 2 ) and displaceable between a safety position for preventing the motor (M) from being turned on and for actuating said braking device and a release position for allowing the motor (M) to be turned on and releasing said braking device, wherein a locking mechanism includes means arranged for preventing pivoting of said clamping lever ( 12 ) while the tool (T) is rotating for placing said clamping lever ( 12 ) in a clamped state where said clamping lever ( 12 ) is unlocked in the safety position of said safety element ( 4 ) and is in a locked state in the release position of said safety element.