Abstract: A description is given of an extraction device (1) for a core drill, including a housing (4) which has at least one cavity (7), a cover (2) and a wall (3) connected to the cover (2) around the periphery. An extraction nozzle (5) connected to the housing (4) is provided, designed for attaching the extraction device (1) to a suction device. The wall (3) has at least one inlet opening (44, 45), by way of which the cavity (7) is connected to the surroundings (U). A sealing device (50, 51), which can be moved between an inoperative position, lying substantially against the wall (3) of the housing (4), and an operative position, pivoted with respect to the inoperative position about a pivot axis (57, 58), is connected to the housing (4) on a side of the wall (3) that is facing away from the cavity (7).

Abstract: A description is given of an extraction device (1) for a core drill, including a housing (4) which has at least one cavity (7), a cover (2) and a wall (3) connected to the cover (2) around the periphery. An extraction nozzle (5) connected to the housing (4) is provided, designed for attaching the extraction device (1) to a suction device. The wall (3) has at least one inlet opening (44, 45), by way of which the cavity (7) is connected to the surroundings (U). The wall (3) has a first substantially planar wall region (10) and a second substantially planar wall region (11), wherein a surface (14) of the first wall region (10) that is facing away from the cavity (7) forms an obtuse angle (16) with a surface (15) of the second wall region (11) that is facing away from the cavity (7).

Abstract: An arrangement of components in a portable wet vacuum cleaner, wherein the wet vacuum cleaner includes a container for collecting a liquid-dirt mixture. The component arrangement is characterized, in particular, by a sloping sealing plane as the upper termination of a collecting container of the wet vacuum cleaner, wherein the sloping sealing plane includes a filter unit. In a second aspect, the invention furthermore relates to a wet vacuum cleaner having a component arrangement of this kind.

Abstract: A profile structure for a component of a power tool, wherein the profile structure has a front side and a rear side, and wherein the profile structure has at least two corrugations on one of the two sides and at least one corrugation on the other side. A power tool having a component that includes a profile structure. The power tool may preferably be a cutting or severing device, wherein the power tool component may be a cutting arm. The profile structure is particularly suitable for withstanding different loadings to which a component of a power tool may be exposed. The loadings may be for example bending about a horizontal or about a vertical axis or torsion. In a further aspect, the invention relates to a cutting arm for a power tool, wherein the cutting arm comprises a profile structure. The cutting arm may in particular be formed in one piece.

Abstract: A power tool having at least one front handle and a tool, wherein the tool can be cooled with a cooling liquid during the operation of the power tool. The power tool has a regulating unit for providing the cooling liquid, wherein the regulating unit has a valve for setting a quantity of cooling liquid and is integrated on the front handle.

Abstract: A power tool having a disk-shaped tool and a guard plate in order to protect the power tool from flying sparks. The guard plate here has devices for supporting a secure standing position of the power tool, wherein the devices include an elastic material and can be preassembled on tabs of the guard plate. An assembly and a method for rapidly mounting a guard plate and devices for supporting a secure standing position of a power tool on a power tool is also provided.

Abstract: A mobile energy store for outputting electrical energy. The mobile energy store has, in particular, a storage unit which may have a modular structure and may comprise storage modules, wherein the mobile energy store also has a number of rechargeable battery interfaces for outputting the electrical energy to rechargeable batteries and/or electrical devices comprising rechargeable batteries. A method for operating a mobile energy store, wherein the storage unit of the mobile energy store can be charged with electrical energy and the electrical energy is output from the storage unit to rechargeable batteries and/or electrical devices including rechargeable batteries with at least one rechargeable battery interface.

Abstract: A power tool includes a motor, a rotary disk, a belt drive connecting the motor to the rotary disk, and a reduction gear stage between the motor and the belt drive. A power tool with a ratio of an outer diameter of the drive pulley and an outer diameter of the output pulley being 0.75 to 1.33 is also provided as is a method of operating a power tool.

Abstract: An electric power tool having a rotating tool. The electric tool is characterized in that a direction of rotation of the tool on the electric power tool can be set in dependence on an operating state of the electric power tool. The automatic settability of the direction of rotation of the electric tool is associated with the advantage that no gearbox for changing the direction of rotation, as in an internal combustion engine, is required. In addition, the user-friendliness of the electric power tool for the user can be significantly improved, since the user practically no longer has to worry about setting a “correct” direction of rotation of the tool. In a further aspect, the invention relates to a method for operating an electric power tool having a rotating tool, wherein the direction of rotation of the tool on the electric power tool is set in particular in dependence on whether or not a suction device is connected to the electric power tool.

Abstract: A dust hood device for a power tool and to the use thereof and to a method for dust collection. The dust hood device includes, on the lower side thereof, various openings, through which a mixture of air and dust formed during work with the power tool can be extracted. Also disclosed is the use of a dust hood, in particular at various working depths of the power tool, and to a method for dust collection, wherein opening and closing of the openings of the dust hood device can be controlled in accordance with the working depth of the power tool.

Abstract: A device for extracting drilling sludge for use at difficult to access locations on a building site includes a main body. The main body has a cavity on a lower side of the main body and a drilling sludge that is disposed in the cavity during a use of the device is extractable from the cavity by a suction device. The main body also has an extraction opening which opens into the cavity.

Abstract: An arrangement of components in a portable wet vacuum cleaner, wherein the wet vacuum cleaner includes a container for collecting a liquid-dirt mixture. The component arrangement is characterized, in particular, by a sloping sealing plane as the upper termination of a collecting container of the wet vacuum cleaner, wherein the sloping sealing plane includes a filter unit. In a second aspect, the invention furthermore relates to a wet vacuum cleaner having a component arrangement of this kind.

Abstract: A description is given of an extraction device (1) for a core drill, including a housing (4) which has at least one cavity (7), a cover (2) and a wall (3) connected to the cover (2) around the periphery. An extraction nozzle (5) connected to the housing (4) is provided, designed for attaching the extraction device (1) to a suction device. The wall (3) has at least one inlet opening (44, 45), by way of which the cavity (7) is connected to the surroundings (U). The wall (3) has a first substantially planar wall region (10) and a second substantially planar wall region (11), wherein a surface (14) of the first wall region (10) that is facing away from the cavity (7) forms an obtuse angle (16) with a surface (15) of the second wall region (11) that is facing away from the cavity (7).

Abstract: A description is given of an extraction device (1) for a core drill, including a housing (4) which has at least one cavity (7), a cover (2) and a wall (3) connected to the cover (2) around the periphery. An extraction nozzle (5) connected to the housing (4) is provided, designed for attaching the extraction device (1) to a suction device. The wall (3) has at least one inlet opening (44, 45), by way of which the cavity (7) is connected to the surroundings (U). A sealing device (50, 51), which can be moved between an inoperative position, lying substantially against the wall (3) of the housing (4), and an operative position, pivoted with respect to the inoperative position about a pivot axis (57, 58), is connected to the housing (4) on a side of the wall (3) that is facing away from the cavity (7).

Abstract: An apparatus (2) for treating a cooling and rinsing fluid stemming from a soiled drilling fluid (15), including a first container (20) that collects the soiled drilling fluid (15), a second container (21) that is connected to a discharge line (38) for the treated cooling and rinsing fluid (36), a pressure switch (41) that is arranged in the discharge line (38) for purposes of measuring the pressure, and a control unit (40) for switching the treatment apparatus (2) over between a first mode of operation and at least one other mode of operation, whereby the treatment apparatus (2) can be switched over between the first and the at least one other mode of operation as a function of the pressure measured in the discharge line (38).

Abstract: A device for processing a cooling and flushing liquid from a dirty liquid is disclosed. The device includes a first container, which cooperates with a suction device for the dirty liquid and collects the suctioned dirty liquid, a second container, which cooperates with an overpressure device, and a filter element, which is arranged in the second container. The filter element is arranged in a direction of flow before the second container.

Abstract: A device and method for processing a cooling and rinsing liquid from a dirty liquid is disclosed. The device includes a first container, which is connected to a feed line for the dirty liquid, a second container, which is connected to a discharge line for the process cooling and rinsing liquid, and a filter element which is arranged in the second container. A connecting line connects the first and second containers and a bypass line connects the discharge line to the connecting line.

Abstract: A suction device for a pick power tool includes a securing device provided at the first axial end of the suction device for securing the suction device (11) on the pick power tool (6), a connection element (17) for a vacuum source inclined to the longitudinal axis (14) of the suction device (11), and a first baffle wall (21) and at least one further baffle wall (26) spaced from the first baffle wall (21), with the first baffle wall being located between the connection element (17) and the first end (12) of the suction device (11) and the at least one further baffle wall (21) being located between the first baffle wall and the first end (12), and the first baffle wall (21) and the second baffle wall (26) each having, respectively, a through-opening (22, 27) for the working tool (7) of the pick power tool (6).

Abstract: A handle (2; 4) for a hand-held power tool (6) includes a support member (20; 36) for securing the handle grip element (28; 48) to the hand-held power tool (6), and a decoupling device (24; 34) for at least partially vibration-decoupling of the grip element (28; 48) from the support member (20, 36) and including at least three, spaced from each other and extending parallel to each other pin-shaped decoupling elements (30; 44) for connecting the grip element (28; 48) with the support member (20; 36) and for guiding the grip element (28; 48) relative the support member (20; 36), without a position stability of the grip element being affected.

Abstract: A mobile liquid conveying apparatus includes a service liquid area (10) having a service liquid outlet (18) for communicating with the power tool (4), a dirty liquid area (12) having a dirty liquid inlet (28) through which dirty liquid from the power tool (4) can flow into the dirty liquid area (12) with both the service liquid area and the dirty liquid area being provided in a common storage space (7), and a separation element for separating the service liquid area (10) from the dirty liquid area (12).