ES168519U - Helice for fans. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Propeller for fans, characterized by comprising a hub or central support, consisting of a hollow body, generally cylindrical in shape, closed by a base and provided therein with means to carry out its assembly and fixation on the corresponding motor shaft, and endowed at the opposite base with a central opening that can be closed by means of a corresponding cover that is fixed in position in an easily removable form, whose body has a series of circular openings in its side wall which are equal to each other and regularly spaced, in each case. One of which can adjust, resting against a corresponding internal circular rim provided therein, the end stump provided in one of the blades that make up the propeller, which are constituted by independent bodies, which are able to rotate, modifying its inclination with respect to the axis of the set, and that can be immobilized in the position in each case chosen p or by means of screws that go through the said stump through corresponding holes and that thread in the holes provided in an internal plate, which fits in the same opening as that resting against the internal face of the said shoulder; all in such a way that it suffices to tighten the expressed screws in depth, to trap the rim of the opening between the internal plate and the end stump of the blade, determining the locking of the latter in the position in each case chosen, and it suffices to loosen those screws for to be able to modify this position. (Machine-translation by Google Translate, not legally binding)