Robert Boschgmbh

Mike Voigt

Albert Kleider

Kurt Neef

Joachim Schadow

Dieter Wendt

Martin Schulz

Erhard Hoffmann

Ulrich Mueller-Boysen

Frank Fuchs

Manfred Schuele

Heidemarie Schanbacher

The invention is based on a method for producing a screw connection by means of a cutout screwdriver () that terminates a screw driving operation when a predetermined torque is achieved. According to the invention, data relating to an operation are detected in the cutout screwdriver () and transmitted to an external monitoring unit (). The invention also discloses a device for executing the method as well as a cutout screwdriver.

Method and device for producing screw connections

A guard for a power tool with a rotatably driven insertion tool () is configured to cover at least portions of the insertion tool (). At least one blocking means () prevents the insertion tool () from turning around an axis of rotation ().

Guard for an electric machine tool, electric machine tool, and system comprising a guard and electric machine tool

An electric hand tool having a machine housing, with an electric motor accommodated in the machine housing for driving a tool, and a fan wheel accommodated in the machine housing for generating a main cooling air current that flows from a main air inlet to a main air outlet through the machine housing, which said fan wheel creates a suction space and a pressure space on opposite sides when it rotates, wherein means for generating an additional air current are provided and configured such that the additional air current flows onto at least one machine component that is located outside of or in a low-flow region of the main cooling air current, wherein the electric motor includes a motor winding with winding heads that project outward on at least one end face of the electric motor, the fan wheel is located with axial clearance in front of the end face of the electric motor and is configured such that the suction space is located in front of the end face of the electric motor where the winding heads are located, and the means for generating the additional air current have additional air inlets that lead into the suction space, wherein the additional air inlets are passages located in a dividing wall that separates the pressure space from the suction space and, preferably, the passages are separated from the axis of the fan wheel by the greatest radial distance possible.

Electric hand tool

A guard device for a hand power tool, in the form of a sanding/grinding hand power tool, has a wheel guard enclosing at least part of a rotating tool in a radial direction; a guide for guiding the wheel guard along a work piece, and comprising a fastening device for mounting the wheel guard on the hand power tool, wherein the guide is joined with the wheel guard in torsion-resistant fashion, and the wheel guard is mounted in a fashion that allows it to move relative to the fastening device; and a depth-of-cut stop limiting the relative movement of the wheel guard and fastening device, and being lockable in position with positive engagement in preselected stepped positions.

Protective device for a hand machine tool

The invention is based on a guard device () for a power tool, in particular for a sanding power tool, having a protective cover () that is provided to at least partially encompass a disk-shaped, rotating tool, and having a dust removal tube (), the longitudinal axis of which is located at an angle of up to 80&#xb0; to the axis of rotation of the tool. It is proposed that part of the dust removal tube () passes through the plane of a flat side of the tool.

Growing community of inventors

Gaildorf, Germany

Mike Voigt