Patent ID: 7723886

Claim:
A continuously variable magnetodynamic transmission comprising: an input rotor ( 7 ) driven by a power source and provided with magnets ( 6 ) and pole shoes ( 10 ) that are evenly distributed along its circumference, said input rotor ( 7 ) producing during its rotation a multi-polar magnetic field revolving with it; a coaxial field concentrator ( 4 ) comprising magnetically conductive pole shoes; and a coaxial stator ( 2 ) having grooves ( 5 ) and windings in said grooves, said windings being sequentially short-circuited during operation, wherein: said input rotor is surrounded radially outwardly by said coaxial field concentrator and is separated from said coaxial field concentrator by a primary air gap ( 13 ): said coaxial field concentrator is surrounded radially outwardly by said coaxial stator and is separated from said coaxial stator by a secondary air gap ( 12 ); and said coaxial field concentrator is rotatable relative to said coaxial stator.