Hydrodynamic bearing apparatus

Details Hydrodynamic bearing apparatus Hydrodynamic bearing apparatus

1997-02-06

1998-09-15

Hannon, Thomas R.

Bearings

Rotary bearing

Fluid bearing

384119, 384107, 384132, F16C 3206

Patent

active

058069879

ABSTRACT:
A hydrodynamic bearing apparatus which includes at least two hydrodynamic bearing sections for rotatably supporting a shaft member and a cylindrical member, where the bearing sections constitute a continuous bearing clearance. A hydrodynamic pressure generating portion is provided for generating a hydrodynamic pressure in a lubricant which is filled in the bearing clearance. One hydrodynamic generating portion is shaped asymmetrically to move the lubricant in one direction. Two capillary sealing sections are also provided. One capillary sealing section is positioned downstream in a moving direction of the lubricant and is configured such that the lubricant moves by a predetermined amount to cancel a differential pressure which is generated at the hydrodynamic bearing sections.

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.

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