Patent ID: 8754563
Filing Date: 2014-06-17
Classification: G11B,H02K,Y10T

Abstract:
1. A rotating machine comprising: a hub on which a recording disk is to be mounted; a base configured to rotatably support the hub through a bearing; a stator core that is fixed to the base and includes an annular portion and a salient pole radially extending from the annular portion; and a magnet that faces the salient pole radially and is rotated with the hub, wherein the magnet has a plurality of magnetic poles in a circumferential direction such that each of the plurality of magnetic poles faces the salient poles, wherein the salient pole includes a rod-shaped body around which a wire is wound and a tooth portion that is provided radially outside the rod-shaped body and extends circumferentially, wherein a circumferential end located at the end in the circumferential direction of the tooth portion is located radially inside a circumscribed circle passing through a tip located at a radially outermost end of the tooth portion, and wherein a diameter of the circumscribed circle passing through the tip is D