Patent ID: 6201661
Filing Date: 2001-03-13
Classification: G11B

Abstract:
A disc stack assembly for use in a disc drive comprising:a spindle hub operatively configured to rotatable couple to the disc drive which provides an axis about which the disc stack assembly rotates, the spindle hub including a substantially cylindrical portion;a disc positioned on the spindle hub;an annular disc spacer further comprising a first disc contact surface having a first annular channel therein and, a second disc contact surface having a second annular channel therein; anda clamp which provides an adhesiveless coupling of the disc and disc spacer to the spindle hub, wherein the disc spacer includes an inner diameter and an outer diameter, the first channel in the disc spacer being annular and having a first cross sectional shape, said first channel positioned between the inner diameter of the disc spacer and the outer diameter of the disc spacer, the second channel in the disc spacer being annular and having a second cross sectional shape different than the first cross sectional shape, said first channel positioned between the inner diameter of the disc spacer and the outer diameter of the disc spacer.