Oil-circulating structure for fan

Details Oil-circulating structure for fan Oil-circulating structure for fan

2005-08-30

2005-08-30

Hannon, Thomas R. (Department: 3682)

Bearings

Rotary bearing

Plain bearing

C384S378000

Reexamination Certificate

active

06935787

ABSTRACT:
An oil-circulating structure for fan has an oily bearing with a central axis hole for pivoting a fan shaft. An oil-collecting recess trench is formed on the inside wall of the axis hole. The oil-collecting recess trench has a double inner screw shape oil-guiding ditch that is separately formed in clockwise and anti-clockwise direction and forms a plurality of crisscrosses in the oil-collecting recess trench. When the fan rotates, a lubricant in the oil-collecting recess trench is driven by the rotating fan shaft to flow the crisscrosses through the double inner screw shape oil-guiding ditch to circulate in the oil-collecting recess trench so as to achieve an internal-recycle oil-circulating system.

REFERENCES:
patent: 4105267 (1978-08-01), Mori
patent: 5630953 (1997-05-01), Klink
patent: 5932946 (1999-08-01), Miyasaka et al.
patent: 6494621 (2002-12-01), Markovitch
patent: 6626577 (2003-09-01), Horng et al.
patent: 2002/0172609 (2002-11-01), Hsieh

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