Electric motor

Claim 1

A MOTOR OF THE SYNCHRONOUS INDUCTOR TYPE COMPRISING A FRAME, AN ANNULAR STATOR MOUNTED ON THE FRAME AND HAVING A PLURALITY OF EQUALLY SPACED, RADIALLY INWARDLY EXTENDING POLES, THE INNER PERIPHERY OF THE POLES BEING FORMED WITH EQUALLY SPACED TEETH, A WINDING INDUCTIVELY ASSOCIATED WITH EACH POLE, MEANS CONNECTING THE WINDINGS OF DIAMETRICALLY OPPOSITE POLES IN SERIES TO FORM INDEPENDENTLY ENERGIZABLE WINDING SETS WITH ENERGIZATION OF EACH WINDING SET PRODUCING A POLARITY OF MAGNETIZATION OF ONE POLE OPPOSITE TO THAT OF THE OTHER, THERE BEING AT LEAST FOUR POLES FORMING TWO WINDING SETS, A ROTOR ROTATABLY MOUNTED ON THE FRAME AND AXIALLY EXTENDING THROUGH THE STATOR, SAID ROTOR INCLUDING A SUBSTANTIALLY CYLINDRICAL PORTION POSITIONED TO BE RADIALLY ALIGNED WITH THE POLES AND HAVING A PERIPHERY FORMED WITH EQUALLY SPACED TEETH CLOSELY JUXTAPOSED TO THE TEETH OF THE POLES, SAID ROTOR BEING FREE OF PERMANENT MAGNETISM, MEANS CONNECTIBLE TO A SOURCE OF ALTERNATING CURRENT AND TO THE WINDING SETS FOR ENERGIZING ONE WINDING SET WITH INPHASE ALTERNATING CURRENT AND ENERGIZING THE OTHER WINDING SET WITH OUT-OF -PHASE ALTERNATING CURRENT, AND INCLUDING MEANS LIMITING THE CURRENT THROUGH ONE WINDING SET TO ONLY A UNIDIRECTIONAL CURRENT WHICH IS OPPOSITE TO THE UNIDIRECTIONAL CURRENT THROUGH THE OTHER WINDING SET TO CAUSE ROTATION OF THE ROTOR AND MEANS UPON CESSATION OF ENERGIZATION OF THE WINDING SETS BY THE ALTERNATING CURRENT FOR SUPPLYING A UNIDIRECTIONAL CURRENT TO THE WINDING SETS TO MAINTAIN THEM ENERGIZED TO MAINTAIN THE ROTOR STATIONARY.