Self-oommutating rotor with screen disc

Claim 1

AN ELECTRIC MOTOR COMPRISING A STATOR WINDING SUITABLY MOUNTED FOR GENERATING A MAGNETIC FIELD INSIDE A STATOR COMPRISING A PLURALITY OF POLES, A PERMANENTLY MAGNETIZED ROTOR SUITABLY MOUNTED FOR ROTATION WITHIN SAID MAGNETIC FIELD, A SOURCE OF DIRECT CURRENT FOR ENERGIZING SAID STATOR WINDING TO ENERGIZE ALL OF SAID STATOR POLES SIMULTANEOUSLY WITH NEIGHBORING POLES HAVING OPPOSITE POLARITY, A CONTROL CIRCUIT COMPRISING SWITCHING MEANS CONNECTING SAID STATOR WINDING IN SELECTED POSITIONS OF SAID ROTOR ALTERNATIVELY IN THE ONE AND IN THE OTHER CURRENT DIRECTION TO SAID DIRECT CURRENT SOURCE TO ENERGIZE SAID STATOR WINDING TO GENERATE AN ALTERNATING MAGNETIC FIELD, WHEREBY THE POLARITY OF EACH OF SAID POLES ALTERNATELY CHANGES ITS SIGN, AND PICKUP MEANS FOR RECEIVING AN ELECTRIC CURRENT TO CONTROL SAID SWITCHING MEANS, SAID PICKUP MEANS COMPRISING A TRANSMITTER COIL, MEANS FOR SUPPLYING HIGH FREQUENCY CURRENT TO ENERGIZE SAID COIL, A CONTROL COIL IN SAID CONTROL CIRCUIT AND IN POSITION TO BE EXCITED BY SAID TRANSMITTER COIL BUT SPACED THEREFROM AND A SCREENING DISC ROTATING IN SYNCHRONISM WITH SAID ROTOR AND DISPOSED BETWEEN SAID TRANSMITTER COIL AND CONTROL COIL, SAID DISC HAVING AT LEAST ONE CUTOUT PORTION PERMITTING EXCITATION OF SAID CONTROL COIL BY SAID TRANSMITTER COIL.