Patent ID: 6853111

Claim:
An electric-machine rotor, comprising: a field coil having a pair of wire ends; a pair of pole cores each having a plurality of claw poles extending alternately from one pole core to the other to enclose said field coil; a plurality of auxiliary permanent magnets disposed in spaces formed between two of said claw poles; a shaft fixed to said pair of pole cores; a pair of slip rings connected to said pair of wire-ends; and means disposed in said pole cores integrally for indicating the polarity of one of said claw poles when said field coil is energized, wherein said means comprises connecting structures between said pair of wire-ends and said slip rings, the connecting structures being visibly distinctive in shape in order to indicate the polarity of one of said claw poles when said field coil is energized, and at least one of said pair of wire-ends extends through a saddle portion between neighboring claw poles.