Patent ID: 6313967
Filing Date: 2001-11-06
Classification: F16C,G11B

Abstract:
A disk storage drive comprising:a stationary shaft having a bearing portion and a spindle portion, said bearing portion is concentric to said spindle portion and has a diameter at least about 4 times greater than the diameter of said spindle;a hub having a cylindrical bore concentric to said stationary shaft, wherein a side portion of said cylindrical bore is adjacent to a side portion of said bearing portion, and wherein a top portion of said cylindrical bore is adjacent to a top of said bearing portion;an annular thrust plate interconnected to said hub, wherein said thrust plate is concentric to said stationary shaft and adjacent to a bottom of said bearing portion;a fluid filled gap between said cylindrical bore and said bearing portion, and between said annular thrust plate and said bearing portion;a plurality of magnets interconnected to said hub; anda stator assembly for interacting with said magnets, wherein said stator assembly is arranged in a circular fashion to define a circle about said plurality of magnets, wherein said circle is concentric to said gap between said cylindrical bore and said bearing portion, wherein said circle has a diameter greater than said diameter of said bearing portion, and wherein a plane perpendicular to an axis of rotation of said hub that intersects said stator assembly along a line midway between a bottom and a top of said stator assembly also intersects said bearing portion.