Abstract: A drive system for an electric vehicle includes a primary motor with a first power and a secondary motor with a second power, greater than the first power. The primary motor may be a synchronous motor and the secondary motor may be an asynchronous motor. The primary motor may be a permanent magnet motor and the secondary motor may be an induction motor. A power ratio between the first power of the primary motor and the second power of the secondary motor may be less than 1.

Abstract: The invention relates to a device (2) for injecting spin-polarized electrons and for reflecting light, comprising at least one lattice structure (3) having a plurality of recesses (4), wherein the lattice structure (3) is designed to reflect the light, and wherein a respective injection contact (5, 6) for injecting spin-polarized electrons is arranged in at least some of the recesses (4).

Abstract: A bicycle servicing system includes: a transceiver device for arrangement on a bicycle; a bicycle data processing device arranged on the bicycle and connected with the transceiver device; a stationary data processing device for processing bicycle- and/or cyclist-specific data received from the transceiver device, the data processing device being adapted to be in communication with the transceiver device via mobile data transmission; and a data output device for outputting data transmitted from the data processing device, the data output device being adapted to be in communication with the data processing device via mobile data transmission, and/or a further data processing device for further processing of the data transmitted from the data processing device, the further data processing device being adapted to be in communication with the data processing device via data transmission.

Abstract: The invention relates to a method for the production of a three-dimensional moulded body (52) by successively solidifying layers of a powdery construction material (57), which can be solidified by means of electromagnetic radiation or partial radiation, on points corresponding to the respective cross section of the moulded body (52). A carrier (43), which receives the moulded body (52) after the moulded body (52) is produced in a construction chamber (42), is displaced from a working position into a cooling position (121), wherein at least the carrier (43) is cooled or is driven into a suction position (128), wherein the non-solidified construction material (57) is removed from the construction chamber (42) or is moved into a cooling and suction position, wherein the non-solidified construction material (57) is removed from the building chamber (42) and the carrier (43) is cooled.

Abstract: The invention relates to a process for producing a shaped body by selective laser melting, in which a shaped body is built up from pulverulent metallic material using CAD data of a model, in which a powder layer is applied using an applicator unit, and in which the applied powder layer is fixed to a layer below it using a focused laser beam, in which process the powder layer is levelled to a desired layer thickness as a result of a levelling device passing over the shaped body at least once, and during the levelling elevations that project above the desired layer height of the applied powder, of the layer which was last melted by the laser beam are uncovered by the levelling device.

Abstract: The invention relates to an apparatus and a process for producing a three-dimensional shaped body by successive consolidation of layers of a pulverulent build-up material, which can be consolidated by means of electromagnetic radiation or particle radiation, at locations corresponding to the respective cross section of the shaped body, having a beam source for generating a focussed beam and a deflection device for diverting the focussed beam onto the layer which is to be consolidated, having a carrier in a build-up chamber, adjacent to a process chamber, for receiving the shaped body which is to be formed, wherein at least two working stations are formed by in each case one process chamber, the process chambers are hermetically locked off and are each designed to be separate from one another, and the deflection device and the at least two working stations can be positioned in a working position with respect to one another.

Abstract: The invention relates to a process for producing a shaped body by selective laser melting, in which a shaped body is built up from pulverulent metallic material using CAD data of a model, in which a powder layer is applied using an applicator unit, and in which the applied powder layer is fixed to a layer below it using a focused laser beam, in which process the powder layer is levelled to a desired layer thickness as a result of a levelling device passing over the shaped body at least once, and during the levelling elevations that project above the desired layer height of the applied powder, of the layer which was last melted by the laser beam are uncovered by the levelling device.