Fluid bearing device

Details Fluid bearing device Fluid bearing device

2006-10-17

2006-10-17

Footland, Lenard A. (Department: 3682)

Bearings

Rotary bearing

Fluid bearing

Reexamination Certificate

active

07121726

ABSTRACT:
A fluid bearing device for preventing a lubricant from scattering outside even during rotation thereof, while holding a relatively large amount of lubricant in a seal surface portion. Lubricant is filled between a sleeve and a shaft, the seal surface portion is formed in a location facing an open end of the sleeve, a sectional shape of the seal surface portion is such that a smallest clearance from an outer peripheral surface of the shaft is at a radial bearing portion side end portion of the seal surface portion, a largest clearance is at an intermediate portion between the radial bearing portion side end portion and an open end side end portion of the seal surface portion, and a clearance at the open end side end portion of the seal surface portion is smaller than the clearance at the intermediate portion.

REFERENCES:
patent: 5667309 (1997-09-01), Nose
patent: 2937833 (1999-06-01), None

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