Abstract: A thread-forming screw which is provided in particular for thin, perforated sheet metal contains a threaded shank which below the screw head is initially configured so as to be cylindrical and then continues to a conical forming portion. The screw shank within the forming portion has a rib forming an incomplete counter thread.

Abstract: The invention relates to a screw having a screw head and a screw shank, wherein the screw shank is provided at least partially with a thread, characterized in that a periphery of the screw head is provided with a plurality of riblike protrusions protruding in a radial direction.

Abstract: The present invention relates to a connecting element for non-detachably connecting at least two components by means of friction welding when the connecting element is rotated about a longitudinal axis of the connecting element. The connecting element includes a stem formed along the longitudinal axis with a stem face at a free end of the stem for penetrating at least one component, and a head connected to the stem for transmitting a torque about the longitudinal axis from a turning tool to the stem. The stem face has a stem end face which has a convex envelope with a blunt shape.

Abstract: A thread-forming screw which is provided in particular for thin, perforated sheet metal contains a threaded shank which below the screw head is initially configured so as to be cylindrical and then continues to a conical forming portion. The screw shank within the forming portion has a rib forming an incomplete counter thread.

Abstract: A self-drilling and tapping screw for directly screwing together components includes a head and a shank integrally formed with the head. The shank has a self-tapping thread section and, in front thereof, a punch-forming section for flow punch forming. The shank further has at least one cutting edge with a chip removal function, which is essentially located in front of the self-tapping thread section, wherein on the one hand this cutting edge makes it possible to generate a clearance hole into at least one of the components by turning the screw, while on the other hand not impairing a flow punch forming in another component. A component assembly may be joined together by use of at least one such self-drilling and tapping screw.

Abstract: A frame piece for a rack of a switching cabinet. With minimum material an optimum result is obtained with regard to fastening planes and fastening direction as well as stability. A profile inside and a profile outside are used to form the frame piece as a closed hollow profile with one or two longitudinally directed hollow spaces. The profile outside delineates a free space to an outside corner edge of the rack. The profile inside has a profile section with several rows of fastening seats or several profile sections at an angle with respect to one another with at least one series of fastening seats. The profile inside and the profile outside form outside edges in a region of the right-angled abutting outsides of the rack. The outside edges are designed as double-layer sealing struts or connected to them in a direction to the outside corner edge connecting struts with or without receiving grooves for sealing elements.

Abstract: A frame piece for a rack of a switching cabinet having fastening possibilities, torsional rigidity, material expenditure and manufacture that corresponds to requirements. The frame piece includes a section outside as a connection section between outsides of the rack that contact at right angles. Fastening sections of a section inside are connected to the connection section, which have in a longitudinal direction of the section fastening mounts and transition into section sides having second fastening mounts. The fastening sections are at a first angle to the outsides of the rack and the section sides are at a second angle to the connected fastening section. The fastening sections and the section sides form two inside edges of the section inside.

Abstract: A switching cabinet with two side walls, a back wall, a bottom side and a cover side and with frame pieces which, at least in part, are formed by multiple beveling of the side walls, the back wall, the bottom side or the cover side in the inner space of the switching cabinet, where the sections formed by beveling have a section which is inclined or parallel to the plane of the corresponding side wall, the back wall, the bottom side or the cover side and is at a distance from these. Extended mounting capabilities are offered by the fact that the inclined or parallel sections of two bordering walls standing perpendicular to one another or of a wall and a side of the switching cabinet are assigned to one another in such a way that they form a deepened inside receptacle in the inside space of the switching cabinet.

Abstract: A frame piece for a rack of a switching cabinet, which has a profile outside and a profile inside, the transitions of which lie at a distance from an outside corner edge of the rack and form a free space with the profile outside to the outside corner edge, for swinging a cabinet door and introducing edges of abutting paneling elements. A frame piece with many possibilities of variation with respect to fastening planes, fastening directions and stability is created according to this invention, because the frame piece is designed as having mirror image symmetry in cross-section with respect to an axis of symmetry which is at an angle of inclination to the rack diagonal. On both sides of the rack diagonal with the profile inside and profile outside, there are at least two profile sections that are at an angle with respect to one another, at least a part of which has fastening seats.

Abstract: A frame leg for a rack of a switchgear cabinet having two partial profile strips produced from material strips in a stamping and bending process, wherein the partial profile sections overlap each other with partial sections in connecting areas and are fixedly connected with respect to each other. The stability, the torsional stability and sealing of a frame leg of this type can be improved with negligible outlay. Prior to or during the stamping and bending process of the two partial profile sections, the partial sections included in the connecting areas are provided with a curable adhesive layer at least in one of the partial sections, and that the cured adhesive layers connect the partial sections of the two partial connecting sections included in the connecting areas in a fixed manner.

Abstract: An x-ray examination apparatus has an x-ray radiator mounted on a radiator carrier, with an x-ray film cassette loading and positioning device arranged relative to the radiator carrier so that an x-ray film cassette can be loaded into the device at a position remote from the x-ray radiator, and can be conveyed by the device, after loading, to an exposure position disposed beneath the x-ray radiator.

Abstract: The apparatus for non-contacting disintegration of concretions situated in a life form includes a patient bed, a shock wave generator secured on a carriage below the surface of the bed with an arrangement for coupling energy from the shock wave generator positioned between the generator and the bed; an X-ray unit being mounted for pivotable movement on a longitudinal axis and used for positioning the patient with the isocenter of the region to be treated to lie on the longitudinal axis at a space above the surface of the bed and the carriage for the shock wave generator moving the focal point of the shock wave generator along said longitudinal axis from a working position with the energy focused on the isocenter to a remote position. The arrangement for mounting the X-ray unit includes a C-shaped carrier, which will pivot around the longitudinal axis and positions the X-ray radiator or emitter on an opposite side from the radiation receiver.

Abstract: An X-ray examining apparatus having X-ray exposure installation, an inclinable support bed for a patient, and an overhead X-ray tube which is connected with the X-ray exposure installation. The X-ray exposure installation together with the X-ray tube is rotatably supported about a horizontal axis, and the patient support bed for the patient longitudinally slidably carried on the X-ray exposure installation. In this manner, the X-ray tube together with its high voltage cable, and the X-ray exposure installation, are commonly supported at a location which is fixed with respect to the horizontal direction. The X-ray exposure installation may be fastened to a carrier or support tube which envelops the horizontal axis. The carrier tube may be supported, so as to rotate about the horizontal axis, on a carriage which is slidable in a vertical direction along a separating wall.