Patent ID: 8235137

Claim:
A manually operable electrically powered tool, comprising: an electric motor disposed in a housing; a drive train disposed between the motor and a tool spindle, comprising: a gearbox comprising a plurality of gears, the gearbox being coupled to the motor and being arranged for changing the rotational speed of the spindle between a first and a second speed, and a torque limiter which limits drive to the spindle when a predetermined torque is applied to the spindle; and an adjustment member for setting different modes of operation, the adjustment member being moveable between a first and Nth position such that, when the adjustment member is in the range of positions between the first and N−1 positions the tool is operable in a screw driving mode and the torque at which the torque limiter limits drive to the spindle can be varied, and, when the adjustment member is in the Nth position the tool is operable in a drilling mode and torque to the drive spindle is not varied; wherein the speed of rotation of the spindle is changed between the first and second speeds by axial movement of one of the plurality of gears relative to the housing when the adjustment member is moved between the N−1 and Nth position.