Patent ID: 7113365
Filing Date: 2006-09-26
Classification: G11B,H02K

Abstract:
1. A disk drive comprising: (a) a disk; (b) a head actuated over a surface of the disk; (c) a spindle motor for rotating the disk, the spindle motor comprising: (d) a hub comprising a plurality of magnets for interacting with the stator teeth to rotate the hub about the shaft when the windings are energized, the hub comprising a first ring-shaped planar surface positioned over the windings defining a first vertical gap between the windings and the hub; and (e) a first ring-shaped shield disposed in the first vertical gap between the windings and the hub to reduce the voltage coupled to the surface of the disk, wherein the first ring-shaped shield is grounded to at least one of the base and the shaft to reduce the voltage coupled to the surface of the disk.