Patent ID: 11935560
Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. A disk clamp part for a hard disk drive, the disk clamp configured to clamp disk media to a spindle, the disk clamp comprising:
a bottom side and a top side, and
multiple protrusions extending from a surface of the bottom side and configured to contact a disk medium at multiple respective contact positions of the disk medium in response to application of a clamping load;
wherein:
each of the multiple protrusions comprises an annular protrusion circumscribing a hub of the disk clamp, and
the multiple protrusions comprise an inner annular protrusion having a first center height and an outer annular protrusion having a second center height greater than the first center height.