Low-noise miniature electric motor

Details Low-noise miniature electric motor Low-noise miniature electric motor

1990-05-11

1992-04-28

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 90, 310154, 310156, 310180, 310181, 310254, 310268, H02K 524

Patent

active

051091712

ABSTRACT:
A low noise brushless dc motor has a rotor with a permanent magnet and a stator with a bearing system mounting a shaft for rotating the rotor. The bearing system includes at least one axially extending bearing surface that terminates in axially spaced apart ends defining the outer axial limits of the bearing surface. Magnetic components of the rotor and the stator define a magnetic circuit. the magnetic components have an eccentricity creating an asymmetry in the magnetic circuit that causes a resultant lateral magnetic force to be applied on the shaft at a point axially inside the outer axial limits of the bearing surface, whereby the shaft exerts a pressure along the bearing surface between both ends of the bearing surface in a direction perpendicular to the rotor axis.

REFERENCES:
patent: 3500092 (1970-03-01), Heilmann et al.
patent: 4185214 (1980-01-01), Gerber et al.
patent: 4575652 (1986-03-01), Gogue
patent: 4647803 (1987-03-01), von der Heide
patent: 4730136 (1988-03-01), Muller
patent: 4851731 (1989-07-01), Saotome
patent: 4866317 (1989-09-01), Katayama
patent: 4891537 (1990-01-01), Shiraki

Affiliated with

Also associated with

Rating

Low-noise miniature electric motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low-noise miniature electric motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-noise miniature electric motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1251107