Bearings – Rotary bearing – Fluid bearing
Patent
1998-08-03
2000-03-14
Footland, Lenard A.
Bearings
Rotary bearing
Fluid bearing
F16C 3374
Patent
active
06036369&
ABSTRACT:
A fluid dynamic pressure bearing has a shaft member, a sleeve member which is relatively rotatable to this shaft member and radial and thrust fluid dynamic pressure bearings. A lubricating oil retaining channel is provided to retain lubricating oil by the capillarity, a part of the retaining channel is open to the atmosphere and the other part is communicated with the fluid dynamic pressure bearings. The retaining channel can be formed on the shaft member. Further, a fluid dynamic pressure bearing in such the construction is favorably used in a motor and a disk driving apparatus.
REFERENCES:
patent: 5403098 (1995-04-01), Yasui et al.
patent: 5558443 (1996-09-01), Zang
patent: 5558445 (1996-09-01), Chen et al.
patent: 5559382 (1996-09-01), Chen et al.
patent: 5722775 (1998-03-01), Thijsse et al.
Footland Lenard A.
Nidec Corporation
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