Damping of vertical and offtrack dynamic modes gain at the slider in a disc drive
AssigneeHitachi Global Storage Technologies Netherlands B.V.
InventorSatya Prakash Arya
Life of this patent
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Abstract
The invention discloses an apparatus and method for passive damping of slider modes in a storage device. An exemplary apparatus comprises a cradle for supporting a slider and comprising two side members and a center member, where each of the side members are disposed at opposite ends of the center member, and a viscoelastic layer lining two side members and the center member of the cradle.
Claims22
An apparatus for passive damping of slider modes in a storage device, comprising:
- a cradle for supporting a slider and comprising two side members and a center member where each of the side members are disposed at opposite ends of the center member;
- and
- a viscoelastic layer lining the two side members and the center member of the cradle, wherein the side members are coupled to the center member, wherein the side members are positioned outside a periphery of the slider.
An apparatus for passive damping of slider modes in a storage device, comprising:
- a cradle for supporting a slider and comprising two side members and a center member where each of the side members are disposed at opposite ends of the center member;
- and
- a viscoelastic layer lining the two side members and the center member of the cradle,
- wherein the viscoelastic layer lining the center member damps attack modes of the slider, wherein the viscoelastic layer lining the two side members damps vertical modes of the slider, wherein the separate damping modes are only coupled through the viscoelastic layer.
A method for passive damping of slider modes in a storage device, comprising:
- providing a cradle comprising two side members and a center member where each of the side members are disposed at opposite ends of the center member;
- providing a viscoelastic layer;
- and
- supporting the slider in the cradle on the viscoelastic layer lining the two side members and the center member of the cradles,
- wherein a portion of the viscoelastic layer lining each side member has at least one of(i) a different length and (ii) a different width, than a portion of the viscoelastic layer lining the center member, each side member being separate from the center member.
Dependencies are inferred from the claim text.