Abstract: A screw having a shank, wherein the shank has a tip end, a rear end, and a longitudinal axis extending through the tip end and through the rear end, wherein the tip end and the rear end are opposite ends of the shank, and a screw thread, which is connected to the shank, and which winds around the shank, wherein a wedge groove is provided in the shank, which wedge groove winds around the shank and extends alongside at least a section of the screw thread, wherein the wedge groove is delimited by a rearwardly tapered wedge flank for wedging a grout shell surrounding the shank. At least one ridge is provided within the wedge groove, wherein the ridge compartmentalizes the wedge groove.

Abstract: A line feedthrough for guiding at least one line through a component, contains a cladding tube, a fastening element, and at least one sealing element which is in the form of a flexible hose body and arranged within the cladding tube. The hose body is connected, in a first axial end region, to the fastening element. It is possible to displace said hose body between a closed position, in which the hose body at least partially closes a passage through the hose body, and an open position, in which a passage through the hose body is at least partially unblocked. A spring device is provided that acts on the fastening element, which can be displaced in the longitudinal direction (L) relative to the cladding tube, with a force that presses the hose body toward a closed position.

Abstract: A flange device and to a method for fastening a saw blade to a drive spindle of a sawing device. Among other things, the flange device includes a nut, which is arranged in a movable manner in an interior of a flange body, wherein, in a closed state of the flange device, the nut surrounds a central screwing device, which is guided in the drive spindle, for the purpose of fastening. A system for fastening a saw blade to a drive spindle of a sawing device, wherein the system has a flange device, and a sawing device and a central screwing device. The drive spindle of the sawing device can be pressed in the direction of the flange device by a spring, such that, in the closed state, it can be received by an interior of the nut of the flange device.

Abstract: The present invention relates to a foamable multicomponent composition for producing foamed fire-protection profiles, and fire-protection profiles produced from the multi-component composition according to the invention. The foamable multi-component composition and the fire-protection profile comprise at least one temperature-regulating filler which improves the fire-resistance duration in the event of a fire. The present invention further relates to the use of temperature-regulating fillers for improving the fire-resistance duration of fire-protection profiles in the event of a fire, in particular fire-protection profiles having a low density.

Abstract: A method can be used for producing a firewall in an opening of a building. In this case, at least one fire protection profile is used which contains a tube made of a composite material, which is filled with a fire protection material. The fire protection profile is designed such that it can be combined with an adjacent fire protection profile in the event of a fire. In order to produce the firewall, it is first transferred into an at least partially compressed state or provided in such a state. The fire protection profile is then introduced into the opening, with the at least partially compressed state being maintained. The fire protection profile is subsequently released so that it is decompressed at least partially and at least in portions.

Abstract: A battery-operated handheld power tool (1) having a receiving bay (4) for releasably receiving at least one battery unit (10, 20, 30) is proposed. The receiving bay (4) has at least four electrical contacts (K1-K4) for making contact with at least four corresponding contacts of the at least one battery unit (10, 20, 30), wherein a load of the handheld power tool (1) is connected between a first contact (K1) and a fourth contact (K4), wherein a switch (3) that can be switched to an open and a closed switching state is connected between a second contact (K2) and a third contact (K3), and wherein a first cell arrangement (31) is connected in series with a second cell arrangement (32) of the battery unit (10, 20, 30) or a first battery unit (10) is connected in series with a second battery unit (20) via the switch (3).

Abstract: A device for introducing openings into a disposal bag for a vacuuming device, wherein the vacuuming device has a suction head and a collecting tank. The includes components that are configured in a manner corresponding to one another, wherein the components of the device that are configured in a manner corresponding to one another include an open structure, wherein the open structure is designed to effect pressure equalization between a first region and a second region of the collecting tank. Within the meaning of the invention, it is preferred for the proposed device to include a punch and a die, wherein the punch is arranged in the suction head and the die is arranged in the collecting tank. In a second aspect, the invention relates to a vacuuming device that includes at least one proposed device. In a further aspect, the invention relates to a method for introducing openings into a disposal bag for a vacuuming device.

Abstract: A power tool is provided comprising a drive, an output shaft, a threaded spindle drive and a linear actuator, wherein torque generated by the drive is transmissible via the output shaft, and the threaded spindle drive connected to the output shaft, to the linear actuator. the threaded spindle drive has an inner threaded spindle part with an external thread and an outer threaded spindle part with an internal thread, wherein the internal thread interacts with the external thread via at least one bearing roller, and the at least one bearing roller has at least one radially encircling channel by which the bearing roller engages in each case into the external thread and into the internal thread.

Abstract: A channel nut includes a web, a first flange projecting from the web where the first flange has a first notch for receiving a first lip of a strut channel, and a second flange projecting from the web where the second flange has a first notch for receiving the first lip of the strut channel. The first notch of the first flange and the first notch of the second flange are arranged in a non-aligned relationship with respect to each other such that the first notch of the first flange and the first notch of the second flange form a curved first seat for the first lip of the strut channel.

Abstract: An electric hand-held power tool, in particular a hammer drill and/or chipping hammer, having an electropneumatic impact mechanism which has a transmission housing, a guide tube arranged at least partially in the transmission housing, an exciter piston that is movable in an axial direction in the guide tube, a connecting rod coupled to the exciter piston, and an eccentric wheel which is coupled to the connecting rod on one side and is mounted so as to be rotatable with respect to the transmission housing via an end plate of the transmission housing on the other side, wherein the transmission housing is subdivided at least into a main shell and a cover shell separate from the main shell, such that the guide tube is braced against the main shell at least partially by the cover shell.

Abstract: An apparatus contains an inertial body held by three electrical conductors along the three principal inertial axes, wherein a voltage is applied to each of the three electrical conductors and are configured such that when a predetermined acceleration threshold value for the inertial body is reached the conductivity of at least one electrical conductor is impaired such that the reaching of a predetermined threshold value is detectable by the voltage measuring device. A rechargeable battery having an apparatus for detecting a critical fall and a method involving detecting three voltages are also provided.

Abstract: The present invention relates to a composite material, to a method for the production thereof, and to a fire protection element containing the composite material according to the invention for the protection of passage openings in components in the event of fire, such as building parts, through which conduits are guided. The present invention further relates to the use of the composite material as a fire protection element for sealing passage openings and/or joints in components.

Abstract: A method for securing a first part to a second part where the first part has a locking oblong hole. The method includes passing a locking threaded rod through the locking oblong hole and into the second part. The locking threaded rod is oversized with respect to a width of the locking oblong hole such that the locking threaded rod widens the locking oblong hole as the locking threaded rod is passing through the locking oblong hole.

Abstract: A self-drilling expanding anchor bolt, including a drill bit for drilling, an anchor rod connected to the drill bit, and an expanding sleeve surrounding the anchor rod, the anchor rod having an expansion cone at a first end adjoining the drill bit, having a neck region behind and contiguous with the expansion cone, and having a threaded segment at a second end of the neck region remote from the drill bit, wherein the expansion cone expands the expanding sleeve in a radial direction when the expansion cone is pulled into the expanding sleeve; a transition part is provided between the drill bit and the expansion cone of the anchor rod, the maximum diameter of the transition part being smaller than the hole diameter of a drilled hole formed by the drill bit.

Abstract: A multi-component inorganic capsule anchoring system can be used for chemical fastening of anchors, bolts, screw anchors, screw bolts, and post-installed reinforcing bars in mineral substrates. The multi-component inorganic capsule anchoring system contains a curable powdery ground-granulated blast-furnace slag-based component A, and an initiator component B in aqueous-phase for initiating the curing process. The powdery ground-granulated blast-furnace slag-based component A contains further silica dust. The component B contains an alkali- or alkaline earth-hydroxide, alkali- or alkaline earth-carbonate, or alkali- or alkaline earth-sulfate component.

Abstract: The invention relates to a device for passing pipes or cables through an opening in a building. Said device comprises a sleeve-like housing that has an axial passage channel that is open at its opposite ends; bristles that are mounted on the walls of the passage channel in such a way that they are opposite each other and that are extended inwards in such a way that they mesh with one another in order to close the passage channel; and flexible strips of material that are mounted in the passage channel and that are coated with an intumescent material.

Abstract: Threaded rod connector including a housing having a cavity for receiving a threaded rod therein, wherein the cavity has a mouth, and an insert including a plurality of rod engagement segments, which are arranged within the cavity, wherein the cavity has a tapered zone tapering towards the mouth for wedging the rod engagement segments against the threaded rod, wherein the insert further includes a plurality of segment carrying arms, wherein each of the segment carrying arms carries at least one of the rod engagement segments, wherein the segment carrying arms form a cage for accommodating the threaded rod. The insert further includes a collar, which is connected to the segment carrying arms, and which interconnects the segment carrying arms, and the cavity has a collar locking zone, in which the collar is arranged, wherein the housing rotationally locks the collar arranged in the collar locking zone to the housing.

Abstract: At least one alkali and/or earth alkaline metal salt in an inorganic mortar system can be used for a chemical fastening of anchoring means in mineral substrates. The inorganic mortar system has a curable aluminous cement component A and an initiator component B for initiating the curing process. Component A further has at least one blocking agent selected from the group of phosphoric acid, metaphosphoric acid, phosphorous acid, boric acid, and phosphonic acids, and component B has an activator. The at least one alkali and/or earth alkaline metal salt in an inorganic mortar can accelerate curing of the cements as well as increase load values. A method for a chemical fastening of anchoring means, preferably of metal elements, in mineral substrates such as structures made of brickwork, concrete, pervious concrete or natural stone can also be performed.

Abstract: A method for setting more precisely a position and/or an orientation of a device head in a measuring environment by a distance measuring device which has a number of M, M?1, distance measuring sensors and which is connected to the device head. A control device is communicatively connected to the distance measuring device and an on-board sensor device. The position and/or the orientation of the device head is determined by the on-board sensor device and the position and/or the orientation of the device head determined by the on-board sensor device is set more precisely by the control device.