Bearings – Rotary bearing – Plural bearings one plain and one antifriction
Reexamination Certificate
2007-11-27
2007-11-27
Hannon, Thomas R. (Department: 3682)
Bearings
Rotary bearing
Plural bearings one plain and one antifriction
C384S100000, C384S107000, C310S090000, C360S099080
Reexamination Certificate
active
10496810
ABSTRACT:
Disclosed is an aerodynamic bearing assembly for a spindle motor for hard disk drives, in which a hub of the spindle motor is pivoted in both radial and thrust directions by the ball bearing, which directly contacts the center of the hub, to perform rotation according to the rotational principle of a whirligig, and is subject to the thrust load through the aerodynamic bearing assembly with air groove(s) without being in contact with it, so that the hub maintains a rotational center without mechanical contact resulting in noise and starting failure of the assembly during an initial starting (low-speed rotation). The assembly includes air grooves, the air groove generating aerodynamic pressure between the hub and the aerodynamic bearing while the hub rotates.
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Kim Sang Uk
Myung Beom Young
G & W Technologies Inc.
Hannon Thomas R.
Keusey, Tutunjian & & Bitetto, P.C.
Pilkington James
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