Patent ID: 7337524

Claim:
A method of forming a winding core for an electric motor of the type comprising an internal stator, including a shaft fixedly mounted to a structural support and having multiple windings capable of reversible current flow to alter the winding polarity, and an external rotor rotatably mounted relative to the shaft and having multiple magnets radially spaced about the periphery of the stator, with each of the magnets having at least one predetermined pole, comprising the steps of: providing a hollow cylindrical jig having at least one guide; providing plates, each having a central opening, radial poles with caps at the end of each pole, and having a guide corresponding in shape to mate with the at least one guide in the jig; providing a stop in the jig; sliding each plate in the jig with the guide in the plate mating with the guide in the jig, and with the first plate bearing against the stop until a plurality of plates are disposed in the jig; pressing a shaft into the central openings; compressing the plates to form a lamination; and securing a lock nut on the shaft adjacent to the last plate to hold the lamination in compression.