Bearings – Rotary bearing – Fluid bearing
Patent
1997-02-14
1998-08-11
Hannon, Thomas R.
Bearings
Rotary bearing
Fluid bearing
384107, F16C 3206
Patent
active
057917850
ABSTRACT:
A hydrodynamic bearing apparatus for use in a spindle motor. The bearing includes at least two hydrodynamic bearing sections for supporting a rotary member with respect to a fixed member, a hydrodynamic pressure generating mechanism, a space between the two hydrodynamic bearing sections, a lubricant, two capillary sealing sections, and a lubricant reservoir. In the hydrodynamic bearing apparatus, the hydrodynamic pressure generating mechanism is positioned at the hydrodynamic bearing sections, and the capillary sealing section of the two capillary sealing sections has a space capacity which allows for an increased amount of lubricant. The lubricant is moved by a predetermined amount in one direction by a differential pressure generated at the hydrodynamic bearing sections when the rotary member rotates.
REFERENCES:
patent: 4795275 (1989-01-01), Titcomb et al.
patent: 5423612 (1995-06-01), Zang et al.
patent: 5427456 (1995-06-01), Hensel
patent: 5433529 (1995-07-01), Hensel
patent: 5516212 (1996-05-01), Titcomb
patent: 5533811 (1996-07-01), Polch et al.
Gomyo Masato
Hayakawa Masamichi
Nose Tamotsu
Hannon Thomas R.
Sankyo Seiki Mfg. Co. Ltd.
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