Stiffened shaft bearing cartridge

Details Stiffened shaft bearing cartridge Stiffened shaft bearing cartridge

2011-05-31

2011-05-31

Evans, Jefferson (Department: 2627)

Dynamic magnetic information storage or retrieval

Head mounting

For shifting head between tracks

C360S265300

Reexamination Certificate

active

07952837

ABSTRACT:
The present invention is a device for increasing the stiffness of a pivot bearing assembly generally employed along with an actuator assembly of a magnetic disk drive. More specifically, bearing cartridges generally used in the art, are modified with a smaller spacer and a stiffener that is associated with the shaft. This modification reduces the rotating mass of the actuator assembly and increases the stiffness of the pivot assembly about which it rotates, thereby yielding greater system performance by increasing a critical resonance mode frequency.

REFERENCES:
patent: 5295029 (1994-03-01), Elsing et al.
patent: 6246137 (2001-06-01), Obara
patent: 6574076 (2003-06-01), Koyama
patent: 6631053 (2003-10-01), Chew
patent: 6801386 (2004-10-01), Niroot et al.
patent: 6949852 (2005-09-01), Aiello
patent: 7072148 (2006-07-01), Tsuchiya
patent: 2002/0024770 (2002-02-01), Hong et al.
patent: 2005/0117259 (2005-06-01), Uefune et al.
patent: 2005/0146810 (2005-07-01), Mouri et al.

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