Asymmetry pressure regulation and check valve device for...

Bearings – Rotary bearing – Fluid bearing

Reexamination Certificate

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Reexamination Certificate

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07063462

ABSTRACT:
A disk drive motor is provided comprising a stationary assembly supported from a base, a rotating assembly supported by the stationary assembly, a fluid dynamic bearing positioned in a gap between the rotating assembly and the stationary assembly, a seal reservoir defined between the stationary assembly and the rotating assembly, at least one fluid re-circulation path extending through the stationary assembly and ending in the seal reservoir, and a pressure-regulating obstruction located in the re-circulation path.

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