Disk drive suspension assembly including a base plate with...

Details Disk drive suspension assembly including a base plate with... Disk drive suspension assembly including a base plate with...

2005-11-22

2005-11-22

Castro, Angel (Department: 2653)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Selective erase recording

C360S244800

Reexamination Certificate

active

06967800

ABSTRACT:
A disk drive suspension assembly. The suspension assembly includes a load beam and a base plate with a longitudinal axis. The base plate includes an actuator arm and an opposing actuator arm end. The head gimbal end is disposed in mechanical communication with the load beam for distally supporting the load beam. The head gimbal end defines opposing first and second distal corners. The base plate includes first and second mass reduction openings formed through the base plate symmetrically about the longitudinal axis at the head gimbal end for locally reducing mass to mitigate torsional vibration mode frequency about the longitudinal axis. The first mass reduction opening is disposed at the head gimbal end between the first distal corner and the longitudinal axis. The second mass reduction opening is disposed at the head gimbal end between the second distal corner and the longitudinal axis.

REFERENCES:
patent: 5870252 (1999-02-01), Hanrahan
patent: 5894381 (1999-04-01), Allen et al.
patent: 5995335 (1999-11-01), Jurgenson et al.
patent: 6063508 (2000-05-01), Hanrahan et al.
patent: 6141187 (2000-10-01), Wong et al.
patent: 6399179 (2002-06-01), Hanrahan et al.
patent: 6731472 (2004-05-01), Okamoto et al.

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