Viscoelastic disc clamp using adhesive with radial compliance
AssigneeSeagate Technology LLC
InventorMarc Jaques Lalouette
Life of this patent
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Abstract
Herein is disclosed a method and apparatus for coupling a disc to a hub, so as to dampen radial vibrations of the disc. A hub rotates and is coupled to a magnetically encodable disc via a flexible joint. The flexible joint may be made out of a viscoelatic adhesive. There exists no rigid coupling between the disc and the hub, meaning that radial vibrations of the hub result in compression or decompression of the flexible joint, rather than in translation of the disc. The disc may be coupled to the hub by applying a viscoelastic adhesive to a hub, and applying a disc to the viscoelastic adhesive without otherwise rigidly coupling the disc to the hub.
Claims22
A disc drive with a disc-and-hub assembly that dampens radial vibrations, the disc-and-hub assembly comprising:
- a hub that rotates;
- a viscoelastic joint that bonds a magnetically encodable disc to the hub, thereby causing the disc to rotate with the hub;
- and
- an absence of rigid coupling between the disc and the hub.
A method of coupling a disc to a hub, so as to dampen radial vibration of the disc, the method comprising:
- adhering a viscoelastic adhesive to the hub;
- and
- adhering the disc to the viscoelastic adhesive without otherwise rigidly coupling the disc to the hub.
A disc drive with a disc-and-hub assembly that dampens radial vibrations, the disc-and-hub assembly comprising:
- a hub that rotates, thereby rotating a magnetically encodable disc;
- and
- a means for flexibly coupling the disc to the hub without rigidly coupling the disc and the hub.
Dependencies are inferred from the claim text.