Patent ID: 6545974
Filing Date: 2003-04-08
Classification: G11B

Abstract:
A rotatable device for signal recording and reproduction operations comprising:a rotatable spindle having a spindle shaft and a protruding shoulder; a planar disc body having a thickness between 0.075 and 0.125 inches, the planar disc body comprising a molded member of polymeric material, the member having a principal signal transduction portion having a constant thickness, wherein the portion has a stiffness large enough to reduce off track motion due to nonrepeatable runouts; and a deformable inner radial hub, coupled to an inner radial disc region of the planar disc body, having resilient members disposed about a central bore and sized to seat against the spindle circumference, wherein said resilient members include an upper surface that engage the shoulder of the spindle when the hub is placed on the spindle.