Patent ID: 7466049

Claim:
A wheel assembly, comprising: a carrier; a wheel mounted adjacent to the carrier for rotation relative to the carrier, the wheel having a first side facing the carrier and an opposed second side; a first array of magnets carried by one of the first side of the wheel and the carrier; a first array of coils carried by the other of the first side of the wheel and the carrier corresponding to the first array of magnets, the first array of coils spaced from and aligned with the first array of magnets; a spinner mounted adjacent to the second side of the wheel for rotation relative to the wheel; a second array of magnets carried by one of the second face of the wheel and the carrier; and a second array of coils carried by the other of the second face of the wheel and the spinner corresponding to the second array of magnets, the second array of coils spaced from and aligned with the second array of magnets.