Patent ID: 7676880

Claim:
A windshield wiper assembly comprising: at least one motor having an output shaft and a windshield wiper operatively connected to said output shaft such that said windshield wiper may be driven in repeated wiping motion across the surface of the windshield; said motor including a stator adapted to provide an electromagnetic flux and a rotor assembly supported for rotation about said stator, said rotor assembly including a back iron that defines an inner circumference and a plurality of magnets disposed in spaced parallel relationship relative to one another about said inner circumference of said back iron and in radially spaced relationship about said stator, said inner circumference of said back iron including a plurality of chord surfaces corresponding to said plurality of magnets, and a plurality of arcs disposed between adjacent ones of said plurality of chord surfaces, each one of said plurality of magnets operatively mounted to a corresponding one of said plurality of chord surfaces on said inner circumference of said back iron, said rotor assembly operatively connected to said output shaft and responsive to the electromagnetic flux generated by said stator so as to provide a rotational force to said output shaft to drive said windshield wiper in repeated wiping motion across the windshield.