Electrical synchro-machines of the axial air-gap type

Claim 1

AN ELECTRIC SYNCHRO-MACHINE OF THE AXIAL AIRGAP TYPE, COMPRISING AN ANNULAR STATOR MEMBER AND AN ANNULAR ROTOR MEMBER ARRANGED IN PARALLEL COAXIAL RELATION AND AXIALLY SPACED APART TO FORM AN ANNULAR AIRGAP THEREBETWEEN, EACH OF SAID MEMBERS EMBODYING A FLAT ANNULAR WINDING UNIT, EACH WINDING UNIT COMPRISING A THIN CARRIER DISC HAVING ANNULAR INSULATING SURFACES ON OPPOSITE FACES THEREOF AND SUPPORTING AN ANNULAR WINDING, EACH ANNULAR WINDING BEING FORMED OF TWO SETS OF FLAT AND BARE HALFTURN CONDUCTORS INTIMATELY ADHERING TO THE ANNULAR INSULATING SURFACES ON OPPOSITE FACES OF SAID CARRIER DISC, EXTENDING TRANSVERSELY ACROSS SAID ANNULAR SURFACES AND BEING EVENLY DISTRIBUTED THROUGHOUT SAID ANNULAR SURFACES, THE NUMBER OF CONDUCTORS AND THEIR DISTRIBUTION BEING THE SAME ON EACH CARRIER DISC, SAID HALF-TURN CONDUCTORS BEING INTERCONNECTED FROM ONE FACE OF SAID DISC TO THE OTHER TO FORM A WINDING HAVING POLE-PRODUCING COILS DISTRIBUTED ABOUT SAID ANNULAR SURFACES, THE COILS IN THE TWO WINDINGS BEING THE SAME IN NUMBER AND FORMATION, SAID STATOR MEMBER ALSO COMPRISING A FIRST MAGNETIC YOKE PLATE ON WHICH THE STATOR WINDING UNIT IS AFFIXED AND FORMING A CONTINUOUS ANNULAR MAGNETIC YOKE FOR SAID STATOR WINDING, A SECOND MAGNETIC YOKE PLATE COOPERATING WITH THAT FACE OF THE ROTOR WINDING OPPOSITE TO THE AIRGAP FACE OF SAID ROTOR WINDING UNIT AND FORMING A CONTINUOUS ANNULAR MAGNETIC YOKE FOR SAID ROTOR WINDING, AND CURRENT COLLECTOR RINGS CARRIED ON THE ROTOR AND CONNECTED TO TAPS OF SAID ROTOR WINDING.