ES358720A1 - Decelerator for currents of foucault. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Decelerator by eddy currents, whose rotor includes, at least, an induced disk that moves in front of an inductor device that includes electromagnets with polar extensions and on the outer face of which are provided cooling and ventilation fins whose outer ends are assembled by an annular wall, so that an opening for the entry of air from the outside is formed between, on the one hand, the inner edge of this wall and, on the other hand, the hub of the disk, the rotor shaft or the element by means of which said hub is fixed on this shaft, this opening being commanded by a shutter disposed on the rotor and capable of moving, under the action of attracting the decelerator electromagnets, when they are excited, in a direction parallel to the axis of rotation of the rotor from a position for which it closes this opening to a position for which it opens, characterized by the fact that the polar enlargements of the electromagnets are extended beyond the inner edge of the induced disk and include, at its inner end, a peak that extends axially in the space comprised inside the induced disk and on which several shutters are fixed elements of magnetic material that extend from the obturator towards the electromagnets to stop, when the obturator closes the air intake opening, in the vicinity of the ends of said peaks, so that these elements, once the electromagnets are excited, are attracted to the interval between the inner edge of the induced disc and the peaks of the polar enlargements. (Machine-translation by Google Translate, not legally binding)