Dynamic pressure bearing device

Details Dynamic pressure bearing device Dynamic pressure bearing device

2005-09-06

2005-09-06

Hannon, Thomas R. (Department: 3682)

Bearings

Rotary bearing

Fluid bearing

Reexamination Certificate

active

06939047

ABSTRACT:
A dynamic pressure bearing device includes a rotary shaft, a dynamic pressure bearing member for supporting the rotary shaft, two radial dynamic pressure bearing parts and a thrust dynamic pressure bearing part formed between the dynamic pressure bearing member and the rotary shaft, and a lubricating fluid continuously filled in the two radial bearing parts and the thrust bearing part. A bypass passage for pressure release is provided for communicating across the two radial dynamic pressure bearing parts to flow the lubricating fluid corresponding to the amount of the unbalance caused by the unbalance of the pumping effect forces from a high-pressure side to a low-pressure side through the bypass passage to reduce the unbalance.

REFERENCES:
patent: 3399000 (1968-08-01), Remmers
patent: 4254961 (1981-03-01), Fersht et al.
patent: 6250807 (2001-06-01), Mori et al.
patent: 6361214 (2002-03-01), Ichiyama
patent: 6513979 (2003-02-01), Mori et al.
patent: 2003/0230943 (2003-12-01), Tokunaga et al.
patent: 1060738 (1992-04-01), None

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