Patent ID: 8212445

Claim:
A polyphasic multi-coil electric device comprising: a drive shaft; a first rotor rotatable with said drive shaft and comprising a first array of circumferentially spaced magnets coupled to said first rotor; a second rotor rotatable with said drive shaft and comprising a second array of circumferentially spaced magnets coupled to said second rotor, wherein when said first rotor and said second rotor rotate with said drive shaft, said first array of magnets is angularly offset in a drive shaft rotation direction from said second array of magnets; and first and second stators interleaved with said first rotor and said second rotor, each of said first and second stators comprising an aperture that receives said drive shaft, said first stator further comprising circumferentially spaced electrically conductive coils coupled to said first stator, said second stator further comprising circumferentially spaced air coils coupled to said second stator, and each of said first and second rotors and first and second stators provided in substantially parallel planes.