Patent ID: 7182516
Filing Date: 2007-02-27
Classification: F16C,G11B,H02K

Abstract:
1. A hydrodynamic bearing system for the rotary bearing of a spindle motor to drive the platter(s) in a hard disk drive having a stationary shaft ( 4 ; 40 ), a bearing sleeve ( 3 ; 30 ) journaled to be rotatable about the axis of the shaft and a cover plate ( 9 ) fixedly attached to the bearing sleeve to cover the bearing sleeve in the region of the free end of the shaft, the surfaces of the shaft, the bearing sleeve and the cover plate facing each other and spaced apart from each other by a bearing gap ( 7 ) forming at least one radial bearing region ( 8 ; 8 ′) and at least one axial bearing region ( 13 ; 13 ′), characterized in that the cover plate (