Hydrodynamic bearing for use in an electric motor and an electri

Details Hydrodynamic bearing for use in an electric motor and an electri Hydrodynamic bearing for use in an electric motor and an electri

1999-03-15

2000-05-23

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

384107, 384375, 384120, H02K 516, F16C 3206, F16C 124

Patent

active

060669039

ABSTRACT:
A spindle motor includes a stationary shaft and a rotor. A thrust bearing, a first radial bearing and a second radial bearing are defined between the shaft and rotor. A first annular air gap is established between the thrust bearing and the first radial bearing. A second annular air gap is established between the first radial bearing and the second radial bearing. The first annular air gap is able to vent to outside of the spindle motor via a breathing bore formed in a thrust plate of a stationary shaft. The second annular air gap is able to vent to outside the spindle motor only while the rotor is rotating about the shaft.

REFERENCES:
patent: 3639791 (1972-02-01), Jenkin
patent: 3763534 (1973-10-01), Conroy et al.
patent: 3793543 (1974-02-01), Stokke et al.
patent: 4694213 (1987-09-01), Gowda et al.
patent: 4726693 (1988-02-01), Anderson et al.
patent: 4883367 (1989-11-01), Maruyama
patent: 5396134 (1995-03-01), Mochizuki
patent: 5433529 (1995-07-01), Hensel
patent: 5504637 (1996-04-01), Asada et al.
patent: 5516212 (1996-05-01), Titcomb
patent: 5524986 (1996-06-01), Leuthold et al.
patent: 5658080 (1997-08-01), Ichiyama
patent: 5707154 (1998-01-01), Ichiyama
patent: 5715116 (1998-02-01), Moritan et al.
patent: 5765952 (1998-06-01), Dekker et al.
patent: 5770906 (1998-06-01), Hazelton et al.
patent: 5791785 (1998-08-01), Nose et al.
patent: 5806987 (1998-09-01), Nose et al.
patent: 5839833 (1998-11-01), Zang
patent: 5847479 (1998-12-01), Wang et al.

Affiliated with

Also associated with

Rating

Hydrodynamic bearing for use in an electric motor and an electri does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydrodynamic bearing for use in an electric motor and an electri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrodynamic bearing for use in an electric motor and an electri will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1839062