Fluid bearing device

Details Fluid bearing device Fluid bearing device

2007-04-10

2007-04-10

Hannon, Thomas R. (Department: 3682)

Bearings

Rotary bearing

Fluid bearing

C384S132000

Reexamination Certificate

active

10972495

ABSTRACT:
A fluid bearing device capable of preventing a lubricant from scattering outward even during rotation thereof, while holding a relatively large amount of lubricant at a seal surface portion. A lubricant is filled between a sleeve and a shaft, a seal surface portion is formed on the sleeve in a location facing an open end thereof, the seal surface portion has a sectional shape defined by a plurality of inclined surfaces, and an inclination angle α of the inclined surface of the seal surface portion adjacent a radial bearing portion with respect to a shaft axis is formed to be larger than an inclination angle β of the inclined surface of the seal surface portion distant away from the radial bearing portion with respect to the shaft axis.

REFERENCES:
patent: 5423612 (1995-06-01), Zang et al.
patent: 5427456 (1995-06-01), Hensel
patent: 5667309 (1997-09-01), Nose
patent: 5765952 (1998-06-01), Dekker et al.
patent: 6296391 (2001-10-01), Hayakawa et al.
patent: 6860636 (2005-03-01), Takahashi
patent: 6890104 (2005-05-01), Gomyo et al.
patent: 2003/0161558 (2003-08-01), Kishi
patent: 2937833 (1999-06-01), None

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