Abstract: Earth conductor for earthing systems of electrostatic separator, consisting of an electrically conductive core with a plastic or rubber sheath. In order to prevent the passage of liquid, the earth conductor consists of two conductor parts, the conductor parts are connected via a liquid-tight graphite piece, to which sections of the conductor parts are fixed, and the graphite piece and the sections of the conductor parts are embedded in a plastic body.

Abstract: The invention concerns a method and a device for feeding, clamping, and processing, particularly for geometric welding of automobile body components in a work station. The invention method consists of side-section clamping frames which, after receiving a body side section with the help of portal robots which travel along an elevated four-axle portal in the X-Y axis, are brought into the geometrical welding station, positioned at both sides of the body conveyer system for geometrical welding. The device is characterized in that a four-axle portal (2) is arranged above the geometrical welding station and along which four-axle portal (2), on each side of the body conveyer system (1), at least one portal robot (3), from which side-section clamping frames (9) are hung, can travel in the X-Y axis between a position for receiving the body side sections (8) and a position for clamping and welding the body.

Abstract: The invention relates to a method and an apparatus by means of which a material is vaporized in a treatment chamber by means of an electron beam. Due to controlling the inhomogenity of power distribution over the working area of the beam it becomes possible to prevent local overheating of the target material and thus of a deformation of the target surface. This is realized by oscillating the beam around its working point. The amplitude of the oscillation is, thereby, of almost a few beam diameters and this oscillation is superimposed on the momentarily working position of the beam on the target.

Abstract: In an electron beam-generating system including an electron-emitting cathode, a beam focusing electrode, and an anode electrode for accelerating the emitted electrons, the magnetic fields for deflecting the beam to material to be heated and for periodically deflecting the focal spot of the beam on the material are produced by a heavy current conductor, that is, a conductor carrying a high current, arranged in proximity to the curved path of the deflected electron beam and extending perpendicular to the plane of deflection of the electron beam. The anode electrode may be formed with an opening for the passage of the electron beam, and the heavy current conductor is arranged in the proximity of the opening and parallel to the latter. The heavy current conductor may be designed as an edge of a slot-shaped opening, and may comprise a plurality of individual conductors.