Patent ID: 6876517

Claim:
A data storage device comprising: a stator; a rotor rotatable about the stator, the rotor comprising a hub, the hub defining a recess in a top thereof and having a shoulder surrounding the recess and a plurality of threaded holes in said recess; at least one disk seated on the shoulder, the at least one disk defining a central opening above and in communication with the recess; and a clamp comprising a bottom fixing part, defining a plurality of through holes patterned to correspond to said threaded holes, a cylindrical wall extending from a circumferential edge of the fixing part, and a pressing part extending outwardly from the cylindrical wall and abutting the at least one disk, and fixed to the hub in the recess by means of a plurality of fasteners extending through the through holes and engaging with the hub in the threaded holes, respectively, and pressing on the at least one disk thereby mounting the at least one disk to the rotor.