Patent ID: 6731043
Filing Date: 2004-05-04
Classification: B21D,B21K,H02K

Abstract:
A one-piece field core shell that is formed from a disc having top and bottom surfaces comprising:an outer annular ring integrally formed with the disc as one-piece structure from a single sheet of metal material and encircling a center axis of the disc and extending from the bottom surface in a direction that is perpendicular to the bottom surface of the disc and parallel to the center axis of the disc; an inner annular ring integrally formed with the disc as one-piece structure from a single sheet of metal material and encircling a center axis of the disc, said inner annular axis spaced radially inward from said outer annular ring and extending from the bottom surface in a direction that is perpendicular to the bottom surface of the disc and parallel to the center axis of the disc; and a mounting flange integral to the disc and having a bore extending from the mounting flange to the bottom surface of the disc.