Damped disc drive assembly, and method for damping disc...

Details Damped disc drive assembly, and method for damping disc... Damped disc drive assembly, and method for damping disc...

2008-06-24

2008-06-24

Davis, David (Department: 2627)

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

C029S603030

Reexamination Certificate

active

07391589

ABSTRACT:
A disc drive assembly is provided including a head disc assembly, a housing having a base and a cover cooperating with one another to form a chamber in which the head disc assembly is housed, and a damper structure in operative association with the housing for dampening noise and/or vibration emanated from the head disc assembly. The damper structure includes a viscoelastic damper layer and a continuous, polymeric constraining layer intimately contacting and encasing the viscoelastic damper layer. The constraining layer has a greater stiffness and higher modulus of dynamic shearing elasticity than the viscoelastic damper layer, and is molded from a high density filler and a moldable compound that is immiscible with the viscoelastic damper layer to provide a discrete interface between the constraining layer and the viscoelastic damper layer.

REFERENCES:
patent: 6879466 (2005-04-01), Oveyssi et al.

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