Miniature electric motor

Claim 1

AN ELECTRIC MOTOR COMPRISING A HOUSING PROVIDED WITH A CYLINDRICAL INNER WALL, A CYLINDRICAL PERMANENT MAGNET ARRANGED IN SAID HOUSING CONCENTRICALLY WITH RESPECT TO SAID CYLINDRICAL INNER WALL SO AS TO FORM AN ANNULAR SLEEVE AIR GAP, ANNULAR MEANS IN WHICH SAID PERMANENT MAGNET IS MOUNTED FOR SUPPORTING THE LATTER IN SAID CONCENTRIC POSITION WITH RESPECT TO SAID INNER WALL; SAID SLEEVE MEANS BEING SUPPORTED IN SAID HOUSING AT ONE END THEREOF, A ROTOR COMPRISING A HOLLOW CYLINDRICAL ARMATURE WINDING, A DISC ATTACHED TO ONE END OF SAID HOLLOW CYLINDRICAL WINDING, AND A ROTOR SHAFT TO WHICH SAID DISC IS FIXEDLY ATTACHED; SAID HOLLOW CYLINDRICAL ARMATURE WINDING EXTENDING WITH ITS OTHER END INTO SAID ANNULAR AIR GAP TO SURROUND THE ENTIRE PERMANENT MAGNET AND SAID ROTOR SHAFT EXTENDING AXIALLY COMPLETELY THROUGH SAID PERMANENT MAGNET, SAID PERMANENT MAGNET BEING PROVIDED WITH A CENTRAL OPENING WITH BEARING MEANS MOUNTED WITHIN SAID OPENING FOR ROTATABLY SUPPORTING SAID ROTOR SHAFT, SAID BEARING MEANS BEING THE SOLE SUPPORT OF SAID ROTOR, SAID PERMANENT MAGNET AND SLEEVE MEANS FORMING A FIRST SUBSASSEMBLY AND SAID ROTOR AND SHAFT FORMING A SECOND SUBASSEMBLY ADAPTED TO BE EASILY ASSEMBLED TO FORM AN ELECTRIC MOTOR BY SIMPLY INSERTING EACH SUBASSEMBLY INTO OPPOSITE ENDS OF SAID HOUSING WITH THE SHAFT INSERTED IN SAID MAGNET.