Oil lubricant retaining bearing structure for a fan

Details Oil lubricant retaining bearing structure for a fan Oil lubricant retaining bearing structure for a fan

2006-05-30

2006-05-30

Freay, Charles G. (Department: 3746)

Pumps

Motor driven

Electric or magnetic motor

C417S423100, C417S423150, C384S114000, C384S107000, C384S112000

Reexamination Certificate

active

07052254

ABSTRACT:
An oil-retaining structure for fan comprises an oily bearing with a central axis hole for pivoting a fan shaft. An oil-collecting recess trench is formed on an inside wall of the central axis hole. There is an acute angle oil-guiding ring edge correspondingly formed at one side of the oil-collecting recess trench. When the fan rotates, lubricant inside the oily bearing is upwardly sucked and blocked by the acute angle oil-guiding ring edge, and returns to the oil-collecting recess trench so as to construct an internal-recycle oil-retaining system.

REFERENCES:
patent: 4472004 (1984-09-01), Fingerle et al.
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patent: 5441386 (1995-08-01), Hsieh
patent: 6024496 (2000-02-01), Shy
patent: 6196802 (2001-03-01), Matsumoto
patent: 6848830 (2005-02-01), Li
patent: 6890104 (2005-05-01), Gomyo et al.

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