MAGNETICALLY DRIVEN ROTARY MOTOR FIELD OF THE ART The present invention falls within the field of engineering of rotary motors and specifically relates to continuous motors driven by magnetic energy. STATE OF THE ART Different types of motors are known which rely on electromagnetic energy to actuate continuous rotation of a central motor shaft. Such electromagnetic motors must be connected to a direct or alternating current power source or an electric battery. While they are running said motors use up energy, which must be supplied by the mains power source or battery and is converted into mechanical energy in order to drive the rotation of the motor shaft. The use of endothermic motors powered by a liquid fuel contained in a tank that must be periodically refilled is also known. Hydraulic, oil hydraulic or wind-powered rotary motors are also known, as are motors powered by nuclear reactors. Ecological alterations caused to the surrounding environment are a serious concern for urban areas, where use of air-polluting endothermic engines is periodically restricted. All of the above-described motors pose a practical and economic drawback in that the energy consumed during operation needs to be replenished. The solution offered by the present invention makes it possible to overcome all problems related to energy consumption, refuelling and atmospheric pollution. DESCRIPTION The invention will now be described referring to the drawing, which is appended solely for illustrative purposes and does not limit the scope of the invention. Figure 1 schematically represents a possible embodiment of a magnetically driven rotary motor having functional characteristics as conceived in the present invention. One may note the presence of an inner central rotor (R) and outer stator (S), both equipped with mutually congruent permanent magnets (M', M). An external lever (L) is used to start and stop the rotation of the central rotor (R). A battery (B) and electric device (D) duly connected to all of the peripheral windings (A) regulate transmission of the flow of magnetic waves from the outer stator to the inner rotor. The constructive simplicity of the magnetically driven rotary motor of the present industrial invention is clearly evidenced by the illustrations. Likewise evident is the extreme simplicity of starting and stopping the motor by switching the lever (L), schematically illustrated in the bottom right corner of figure 1, to the ON and OFF positions. The invention naturally lends itself to different embodiments as regards both the dimensions and structural proportioning of the various parts making up the motor and the technological choices in terms of the materials used to construct them. The inventive concept upon which the present invention is founded basically lies in the configuration of the congruent permanent magnets (M', M) applied on the periphery of the inner rotor (R) and outer stator (S). Its innovative character derives from the transparent conceptual simplicity of exploiting the transmissibility of the flow of magnetic energy waves from the stator (S) to the rotor (R) by means of the electric device (E), which regulates its delivery from the battery (B) to the peripheral windings (A). Having now been made acquainted with the inventive combinations disclosed herein, anyone who is averagely skilled in the art will be able to construct, by means of simple practical deductions requiring no inventive effort, magnetically driven rotary motors reproducing the original characteristics of the present invention as basically described and illustrated in the claims below.