Electromotive drive

An electromotive drive, particularly for vehicle with storage batteries comprising a rotary armature with windings, a stator with windings fixed with respect to the armature and a control for pulsed operation, wherein the armature (2) being connected to an output shaft and includes radially movable and pulsating heavy free pistons (6), spring means biasing each piston radially inwardly, and which pistons at an established rated operational rotational speed and in any position of the pistons, move on known principle of a resonance pulsation torque motor with a radial force compensation between centrifugal forces and spring forces reactive thereto by said spring means, and which pistons are so arranged and dimensioned that by means of a DC pulse changer, the tangential parametric acceleration resonance excitation by windings of the device is also maintained during centrifugation of the free pistons (6) so that at instants of increase performance or acceleration of the vehicle, the frequency of pulsation is doubled or tripled, and that as free pistons (6) move back toward the output shaft (9) of the device during the oscillatory or pulsatory motion, also higher power-energetic kinetic total amounts are delivered by the armature (2) due to a temporary increase of a flywheel-like reactive-active effect, only driving torque of the armature sustaining angular momentum thereof with battery current being interrupted during these partial periods of the piston oscillation and the current energy instantaneously drawn from the battery being always approximately doubled, relative to the normal, average theoretical consumption of operating energy, during the alternating purely electromotive partial periods of piston centrifugation, while, contrary to the usual flywheel function and in order to maintain an isocyclic quality of an intertial-power integrating system, no appreciable deviations from the designed rated speed occur, and only a shift to higher kinds of oscillatory dynamic equilibriums takes place at which, if the speed is constant, even mechanical damping, partially simultaneously exciting, is energetically utilized, particularly at a harmonic compulsory excitation of a parametrically resonant oscillator capable of self-excitation, and further that during the last mentioned partial periods of piston centrifugation which always take about a third of the entire period of oscillation, on the one hand, branch currents having an electromagnetic effect flow through appropriately dimensioned windings encircling radial cylinders which slidably accommodate the free pistons and the corresponding springs, to energize them while also varying in time according to the frequency and parametic resonance, and to move the pistons quickly outwardly and displace them in accordance with the necessary cycle once or several times per second during the rotation of the armature at the operating speed, and, on the other hand, the normal function of an electric motor takes effect due to the overdimensioned supply line from the source of power, so that also the additional energy for the simultaneous acceleration varying in time of the heavy armature with the heavy metallic masses of the pistons sliding outwardly, thus with the moment of inertia or flywheel moment GD.sup.2 increasing in time, is produced, in accordance with the known, but modified, differential equation for electric motors, and finally that during the generating operation, within the partial periods in which the pistons move back toward the output shaft, any rotary energy in excess instantly produced by stopping the acceleration is continuously directed by an automatically operating semiconductor control forming the control of the device, through an interconnected, also accumulating, capacitor circuit as well as through necessary transformers and a smoothing rectifier, to the storage battery, for permanent recharge.