Method and apparatus for minimization of magnetic bias force...

Electrical generator or motor structure – Dynamoelectric – Rotary

Reexamination Certificate

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C310S090000, C310S156150, C310S156830

Reexamination Certificate

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06841902

ABSTRACT:
A spindle motor is provided, which includes a stationary sleeve supported from a base, rotating shaft disposed through the sleeve, a fluid dynamic bearing between the sleeve and the shaft, a hub supported proximate a first end of the shaft, a stator supported from the base, a magnet supported from the hub and offset axially relative to the stator, and a steel ring supported from the base and positioned beneath the magnet.

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