Abstract: A power tool, including a support structure, a pivot bearing arranged on the support structure, a shaft mounted on the support structure via the pivot bearing, a rotatable tool coupled to the shaft, in particular a saw blade, milling cutter or grinding wheel, a strain gauge arrangement for detecting a mechanical quantity which depends on a force emanating from the tool, and a control device which is adapted to recognize an event and/or a state of the power tool according to the detected mechanical quantity. The strain gauge arrangement is arranged on a stationary structure section coupled in a force-transmitting manner to the pivot bearing and is not arranged on the pivot bearing.

Abstract: A power tool with a rotatable tool designed as a saw blade or a milling cutter, including a sensor device for detecting a mechanical quantity, the mechanical quantity having a force, an acceleration, a velocity, a deflection, a deformation and/or a mechanical stress, and the mechanical quantity being dependent on a force emanating from the tool, and a control device communicatively coupled to the sensor device, which control device is adapted to recognize a kickback event based on the detected mechanical quantity, where the control device is adapted to selectively determine a first recognition function or a second recognition function different from the first recognition function based on a function determination information, and to perform the recognition of the kickback event based on the detected mechanical quantity using the determined recognition function.

Abstract: An adapter frame for mounting onto a base, in particular a suction device, a system box and/or a roller board, and for receiving a particle collecting container for a cyclone pre-separator, where the adapter frame includes a rectangular underside and adapter frame peripheral walls extending upwards from the underside, and lower adapter frame couplers, designed to provide a releasable, vertically tension-proof coupling to the base when the adapter frame is positioned on the base. The adapter frame on its upper side has a container receptacle for receiving the particle collecting container, the horizontal inner contour of which tapers towards the underside, so that the container receptacle is able to receive and horizontally stabilise a particle collecting container having an outer contour tapering downwards.

Abstract: A suction hose connecting piece for a suction hose for producing a flow connection from a machine tool to a vacuum cleaner, the connecting piece including a tubular body with a circumferential wall that delimits a flow channel, and a plug section which is arranged on the tubular body for the purpose of producing a plug connection with a mating connecting piece, it being possible to plug the connecting piece and mating connecting piece one onto the other along a longitudinal axis of the plug section, a longitudinal latch contour being arranged on the plug section, counteracting release of the mating connecting piece from the connecting piece relative to the longitudinal axis, and engaging with a longitudinal mating latch contour of the mating connecting piece when the mating connecting piece is plugged onto the connecting piece, along the longitudinal axis of the plug section.

Abstract: A processing device with a processing head including a processing unit designed as a tool and/or applicator unit, in particular a printer unit, and a first positioning device for moving the processing head in order to position the processing unit with a first accuracy at a specified processing position. The processing head has a second positioning device and the processing device is adapted to position the processing unit at the specified processing position with a second accuracy using the second positioning device, the second accuracy being higher than the first accuracy, so that the lower accuracy of the first positioning device is compensated for by the positioning with the second positioning device.

Abstract: An assembly that includes a particle collecting container and a cyclone pre-separator placed on the particle collecting container, where the particle collecting container has a rectangular container bottom and four container peripheral walls which extend upwards from the container bottom and define a horizontal outer contour of the particle collecting container, and where the cyclone pre-separator has a particle outlet which is designed to dispense particles which have been separated in the cyclone pre-separator into the particle collecting container. The horizontal outer contour defined by the container peripheral walls tapers towards the container bottom and the particle collecting container can be stacked into an identical particle collecting container.

Abstract: A connection apparatus for electrically connecting a stored energy source to an electrical device having an electric drive motor, wherein the connection apparatus is part of the stored energy source or of the electrical device and can be connected to a connection apparatus of the electrical device or of the stored energy source, wherein the connection apparatuses have plug contours and counter plug contours, by means of which the stored energy source is interlockingly fastened to the electrical device in a fastening position, in which at least two electrical connections between the electrical device and the stored energy source having different potential, are each established by means of a pair of base contact elements and base counter contact elements of the connection apparatuses, said contact elements being in contact with each other, for the supply of electrical energy to the electrical device by the stored energy source.

Abstract: A suction device, having a suction unit for generating a suction flow and having a suction-device housing, in which a dirt-collecting chamber is arranged, which has a suction inlet and is flow-connected to the suction unit via at least one filter and a suction-extraction channel arrangement, wherein at least one external-air inlet, which can be closed by an external-air valve, is arranged on the suction-extraction channel arrangement between the filter and the suction unit, wherein the external-air valve has an external-air-valve body for closing the external-air inlet, which external-air-valve body can be moved, by movement of an actuating element along an actuation path. A transmission is arranged between the actuating element and the external-air-valve body, which transmission enables movement of the actuating element.

Abstract: A power tool with a rotatable tool in the form of a saw blade or milling cutter, including a sensor device for detecting a mechanical vector quantity, where the mechanical vector quantity includes a force, an acceleration, a velocity, a deflection, a deformation and/or a mechanical stress and the mechanical vector quantity depends on a force emanating from the tool, and a control device which is communicatively coupled to the sensor device and is adapted to recognize an event and/or a state of the power tool according to a direction and/or change of direction of the mechanical vector quantity detected by the sensor device.

Abstract: An assembly that includes a particle collecting container and a cyclone pre-separator placed on the particle collecting container, where the particle collecting container has a rectangular container bottom and four container peripheral walls which extend upwards from the container bottom and define a horizontal outer contour of the particle collecting container, and where the cyclone pre-separator has a particle outlet which is designed to dispense particles which have been separated in the cyclone pre-separator into the particle collecting container. The horizontal outer contour defined by the container peripheral walls tapers towards the container bottom and the particle collecting container can he stacked into an identical particle collecting container.

Abstract: A cyclone pre-separator for positioning on a particle collecting container, the cyclone pre-separator including a box-shaped housing and a cyclone unit arranged in the housing, the cyclone unit including an air inlet, an air outlet, and a particle outlet arranged on a underside of the cyclone pre-separator, where the housing has an air inlet hose port connected to the air inlet and an air outlet hose port connected to the air outlet, and has lower housing couplers, adapted to provide a releasable, vertically tension-proof coupling to the particle collecting container, when the cyclone pre-separator is positioned on the particle collecting container.

Abstract: A stack arrangement having at least two stack elements, which can be stacked on each other in a stacking direction, of which at least one is formed from a transport container which has a container body having a storage receptacle which has a machine receptacle for an electrical or pneumatic hand tool machine. The stacking elements have bus interfaces for transferring data and/or energy between the stacking elements of the stack arrangement, wherein the bus interfaces form a bus connection between the stack elements when the stack elements are stacked on each other.

Abstract: A hand-held machine tool, in particular a sanding machine, including a rod-type handle element for the user to grip and a processing head which is moveably mounted on the handle element by means of a joint assembly. The processing head has an electric drive motor for driving a tool holder provided for holding a processing tool and a speed-reducing gearbox between the drive motor and the tool holder, the gearbox being designed to achieve a reduction in speed of an output of the drive motor relative to a speed of the tool holder. The drive motor is a brushless motor and a power supply system for the drive motor is arranged at a distance from the drive motor on the handle element, the power supply system being connected to the drive motor by means of a cable arrangement.

Abstract: A suction hose connecting piece for a suction hose for producing a flow connection from a machine tool to a vacuum cleaner, the connecting piece including a tubular body with a circumferential wall that delimits a flow channel, and a plug section which is arranged on the tubular body for the purpose of producing a plug connection with a mating connecting piece, it being possible to plug the connecting piece and mating connecting piece one onto the other along a longitudinal axis of the plug section, a longitudinal latch contour being arranged on the plug section, counteracting release of the mating connecting piece from the connecting piece relative to the longitudinal axis, and engaging with a longitudinal mating latch contour of the mating connecting piece when the mating connecting piece is plugged onto the connecting piece, along the longitudinal axis of the plug section.