Disk drive rotary actuator assembly having a constrained...

Details Disk drive rotary actuator assembly having a constrained... Disk drive rotary actuator assembly having a constrained...

2005-08-30

2005-08-30

Watko, Julie Anne (Department: 2653)

Dynamic magnetic information storage or retrieval

Head mounting

For shifting head between tracks

Reexamination Certificate

active

06937444

ABSTRACT:
A head stack assembly for a disk drive includes a rotary actuator assembly. The rotary actuator assembly includes an actuator body having a bore defining a pivot axis, an actuator arm cantilevered from the actuator body, and a coil portion cantilevered from the actuator body in a direction opposite from the actuator arm. The coil portion includes a coil support, a flat coil supported by the coil support, the flat coil including a coil surface generally perpendicular to the pivot axis, and a constrained layer damper attached to the coil surface. The constrained layer damper includes a stiffening layer having a coil-facing planar surface generally perpendicular to the pivot axis and an adhesive layer positioned between the coil-facing planar surface and the coil surface.

REFERENCES:
patent: 4144466 (1979-03-01), Hatch
patent: 4728831 (1988-03-01), Cheng
patent: 5148071 (1992-09-01), Takahashi
patent: 6563676 (2003-05-01), Chew et al.
patent: 6600633 (2003-07-01), Macpherson et al.
patent: 2004/0095682 (2004-05-01), Dominguez et al.
Damped Voice Coil/Bobbin Assembly; IBM Technical Disclosure Bulletin, Nov. 1973, p. 1816.

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