Motor

Details Motor Motor

2005-10-11

2005-10-11

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S06700R, C310S090000, C360S099070, C360S099080, C360S099090, C360S099110, C417S423100, C417S423120

Reexamination Certificate

active

06954017

ABSTRACT:
A motor of this invention is provided with a sleeve-type bearing impregnated with oil for supporting a rotor assembly including a shaft and a rotor member. A lower face of the rotor is provided with at least two peripheral wall portions, an inner peripheral wall portion and an outer peripheral wall portion, which surround the shaft with a gap therebetween in a radial direction. The peripheral wall portions are accommodated in an annular recessed portion so as to surround an open space over a sleeve constituted the sleeve-type bearing and has a lower top of the most inner part. The lower end of the inner peripheral wall portion is located lower than the lower end of the outer peripheral wall portion, and the lower end of the outer peripheral wall portion is located lower than the lower top of the annular recessed portion.

REFERENCES:
patent: 5490021 (1996-02-01), Muller et al.
patent: 6084328 (2000-07-01), Yamashita et al.
patent: 6242830 (2001-06-01), Katagiri
patent: 6717310 (2004-04-01), Yoshikawa et al.
patent: 6781268 (2004-08-01), Oku
patent: 2004/0052662 (2004-03-01), Hasiang et al.
patent: 2004/0135447 (2004-07-01), Lee et al.
patent: 5-130754 (1993-05-01), None
patent: 2000-14080 (2000-01-01), None

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