Bearings – Rotary bearing – Fluid bearing
Reexamination Certificate
2007-05-01
2007-05-01
Hannon, Thomas R. (Department: 3682)
Bearings
Rotary bearing
Fluid bearing
C384S113000
Reexamination Certificate
active
11183745
ABSTRACT:
A hydrodynamic bearing device includes a sleeve having a bearing bore substantially at a center portion, a shaft inserted in the bearing bore in a rotatable manner, a thrust plate for supporting an end of the shaft in the thrust direction and an upper retaining portion that has an opening portion through which the shaft passes and covers the upper surface of the sleeve. A radial hydrodynamic bearing is formed between the bearing bore of the sleeve and the shaft, while a thrust hydrodynamic bearing is formed between the thrust plate and an end of the shaft. A first space is formed between the upper surface of the sleeve and the upper retaining portion. A second space is formed between the upper retaining portion and a step portion.
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Asada Takafumi
Fujimoto Koichi
Kusaka Keigo
Yano Hisaaki
Hannon Thomas R.
Matsushita Electric Industrial Col Ltd.
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