Hydrodynamic bearing device

Details Hydrodynamic bearing device Hydrodynamic bearing device

2005-05-10

2005-05-10

Hannon, Thomas R. (Department: 3682)

Bearings

Rotary bearing

Fluid bearing

C384S107000, C384S132000

Reexamination Certificate

active

06890104

ABSTRACT:
A bearing has a thrust plate integrated with its shaft and a bearing member surrounds both. A radial pressure bearing portion and separate thrust portion generate pressure on a lubricating fluid in a gap between the shaft and bearing member. One end of the gap is closed while the other is open and has a capillary seal formed with an angle that is large at a boundary but smaller at increasing distance therefrom. The fluids fills the gap so that gas-fluid interface is where the angle is small and causes the thrust plate to float. A pressure mechanism forces the fluid from the open to the closed end and the quantity of fluid is set to fill the mechanism even if the gas-fluid interface moves.

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IPEA (in Japanese) for PCT/JP01/05979, dated Jan. 16, 2002.
Patent Abstracts of Japan Publication No. 10-184691, (Translation for Reference AL above).

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