Abstract: A target for skeet shooting which comprises a hub associated with a rotor that has at least two blades. The hub is associated with an elastic membrane, which in turn is associated with a valve and is designed to be inflated, in order to obtain a substantially spherical surface, before launching the target. Each blade extends longitudinally in a substantially crescent shape and has a geometric keying angle that is variable as a function of the rotation speed of the rotor about its own axis.

Abstract: The invention relates to a wing shooting target made up of an internally empty body, subdivided into two half-portions (1, 2) integrally coupled to each other at the time of shooting, endowed with at least two radial vanes (3) and realized in a light material.

Abstract: A door opener has a housing in which is contained a small fractional-horsepower reversible motor whose output shaft is connected to a worm gear journaled in the apparatus and meshing with a main gear in turn connected to an output member constituted as a sprocket. A clutch is provided between the main gear and the sprocket for disconnecting the two when rotation of the output member is resisted with a torque exceeding a given limit torque. A step-down transmission is connected between this output member and a control disk that carries opening and closing stops that are respectively engageable with opening and closing switches of an electrical control circuit. Thus the angular position of the control disk is directly related to the position of a door connected to the output member. A switch is provided which is actuated whenever the torque exerted between the motor and the worm exceeds a predetermined limit, and serves to reverse the displacement direction of the door in this case.