Abstract: A cooling device for an arrangement with at least one electric component, particularly power electronics (1), for a vehicle, wherein the arrangement can be cooled by a fluid (2) using the method of evaporative cooling, includes a heat engine (4), in particular a steam turbine or a displacement machine for expanding fluid that is evaporated during evaporative cooling.

Abstract: An electric actuator for a device which is to be actuated, having an electric-motor drive inputting its drive into a step-up gear mechanism, it being possible for the device to be driven via the step-up gear mechanism, in order to switch the device from a defined position into another defined position. A clutch element is connected after the step-up gear mechanism so that the device which is to be actuated can be driven by the step-up gear mechanism with the clutch element connected in between. The clutch element decouples the step-up gear mechanism from the device in the event of a failure of the current supply or voltage supply for the actuator, with the result that a defined basic position or rest position can be assumed automatically by the device which is to be actuated.

Abstract: A wind-driven rotor is connected to a generator via a multi-stage planetary transmission arrangement and a spur gear stage. The rotor is supported in the housing of the transmission, and an annular gear carrier with an annular gear is arranged directly on the rotor. The transmission represents a compact drive with a high transmission ratio for driving generators by wind power and makes assembly simple.

Abstract: A toothed coupling for tracked vehicles is provided having a coupling sleeve with internal toothing in engagement with one externally toothed gear and capable of engagement with another externally toothed gear. The toothed coupling is axially displaceable and fixable at defined positions. The coupling sleeve includes a flange part of the coupling sleeve extending radially inward and a spindle connected to the flange part and arranged coaxially with the coupling sleeve for rotating the coupling sleeve about the axis of the coupling sleeve. A spindle nut is arranged on the spindle with a blocking part on one end of the spindle. A tool for engaging the blocking part is also provided where removal of the tool from the blocking part is possible only at defined axial positions of the spindle.