Patent ID: 8622705

Claim:
A device for adjusting a blade pitch of a wind generator comprising: a rotating head-piece comprising a plurality of tubular radial bearings to which blades of the wind generator are articulately connected by means of end supports to which said blades are fixed; and a linear actuator comprising a pneumatic or hydraulic cylinder, located in a central hollow of the rotating head-piece; wherein the rotating head-piece comprises a tubular body inside of which the linear actuator is located, and an annular extension wherein the tubular radial bearings are solidly joined; and wherein the device further comprises a spring coupled around the tubular body, and a mobile crosspiece that incorporates a coupled ring guided around an end span of the tubular body and that comprises arms and connecting rods connected to the end supports of the blades, so that the linear actuator is connected to a central point of the crosspiece to move the crosspiece, either against or with the resistance of the spring, thus varying the blade pitch by means of the connecting rods and producing a rotation of the blades around an axial direction thereof.