Patent ID: 7893585

Claim:
A motor assembly comprising: a spindle including at least one journal bearing pattern formed on a circumferential surface thereof and including a coupling structure depending from an end region; a base having a generally cup shaped structure formed therein, the generally cup shaped structure including an open first end portion, a second end portion, and an inner surface that tapers outwardly from at least about the second end portion to at least about the first end portion; a thrust washer having a fluid dynamic bearing pattern formed on a surface thereof, and defining a hole configured to couple with the coupling structure of the spindle, and having an outer circumferential region configured to fit within the generally cup shaped structure; a hub including a recessed region configured to fit rotatably between the spindle, the thrust washer, and the cup shaped structure, having an outer circumferential surface opposing at least a portion of the tapering inner surface of the cup shaped structure, and defining an opening through which the coupling structure of the spindle is fixedly secured to the hole of the thrust washer, and including a surface adjacent to the fluid dynamic bearing pattern formed on the surface of the thrust washer; and a stator coupled to the base.