Robert Boschgmbh

Alfred Kärcher Gmbh Co. Kg

Alfred Kärcher Se Co. Kg

Frank Fuchs

Erhard Hoffmann

Maic Hensel

Julien Scholl

Martin Kraus

Martin Schulz

Wolfgang Hirschburger

Andreas Schlegel

Holger Frank

Mike Voigt

Thorsten Langen

Ulrich Engenhardt

Rainer Engelhardt

Winfried Habel

Britt Wirbel

Steffen Kunz

Jürgen Frank

Denis DAMMKÖHLER

Heiner KÜHN

Marcel De Marco

A vacuum cleaner is provided, including a suction inlet, a dirt collection container, a filter device, a suction conduit, a suction unit, wherein the dirt collection container is in flow communication with the suction unit via the filter device and the suction conduit and wherein the filter device has a negative pressure applied to it by the suction unit, and including an external air valve device, wherein the filter device is capable of having external air applied thereto on the clean side thereof via the external air valve device and wherein for cleaning the filter device the external air valve device is capable of being brought from a closed valve position to an open valve position and back again from the open valve position to a closed valve position, characterized by a battery device for supplying energy to the external air valve device.

Vacuum cleaner and method for cleaning a filter

A method is provided for cleaning at least one filter of a vacuum cleaner, wherein the vacuum cleaner comprises a suction inlet and a dirt collection container, which can be subjected to negative pressure by a suction unit via the at least one filter and a suction extraction line, and wherein for cleaning purposes the at least one filter can be acted upon by external air on the clean side via at least one external air valve, which moves from a closed valve position via an open valve position back into the closed valve position for cleaning the at least one filter. So that the at least one filter can be cleaned particularly effectively, the suction power of the suction unit can be increased before transfer of the external air valve to the open valve position and reduced again later. A vacuum cleaner for performing the method is also provided.

Method for cleaning a filter of a vacuum cleaner and vacuum cleaner for performing the method

An electric power tool has a housing having an inlet opening and an outlet opening, a drive motor contained in the housing, an electronic unit for controlling and regulating the drive unit, a fan a main air conduit extending between the inlet opening and the outlet opening of the housing, the drive motor being situated in the main air conduit supplyable with cooling air, and a heat sink operative for indirectly cooling the electronic unit.

Electrical power tool

A hand router has a housing () and a tool () situated in the housing in a rotary drivable fashion, which it is possible to operate in the intended manner by means of a suction air flow, in particular by means of a vacuum cleaner. The hand router is particularly powerful because a radial turbine wheel () equipped with intake and outlet gratings () is used as the drive. The housing () is made up of tube-like sections (), in particular that can be grasped by an operating hand, which it is possible to connect with one another by means of flanges ().

Manual routing machine

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 power tool with a housing () and a tool () located thereon such that it is capable of being driven in a rotating and/or oscillating manner, the tool being operable as directed using vacuum flow, in particular using a vacuum cleaner. The power tool is made particularly powerful by the fact that a radial turbine wheel () with forward-guiding and rearward-guiding vane rows () functions as the drive.

Power tool

Growing community of inventors

Rutesheim, Germany

Frank Fuchs