Spindle motor

Details Spindle motor Spindle motor

1993-01-15

1995-03-07

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 90, H02K 714, H02K 708

Patent

active

053961340

ABSTRACT:
A spindle motor comprising a bracket, a shaft member provided on the bracket, a rotor rotatably mounted to the shaft member through a pair of bearings, a rotor magnet mounted to the rotor, a stator disposed in opposite relation to the rotor magnet, and magnetic fluid sealing means respectively disposed outwardly of a pair of the bearings. The shaft member is provided with an air passage extending in the axial direction, and a communication passage for communicating the air passage with a space between a pair of the bearings. A cap member which is improved in its structure is disposed outwardly of one of the paired bearings. An annular projection for positioning the rotor magnet concentrically with respect to the rotor is provided on a magnet mount portion of the rotor.

REFERENCES:
patent: 4843500 (1989-06-01), Elsasser et al.
patent: 4905110 (1990-02-01), Krum et al.
patent: 4985792 (1991-01-01), Moir
patent: 5009436 (1991-04-01), Endo et al.
patent: 5045738 (1991-09-01), Hishida et al.
patent: 5047677 (1991-09-01), Minela et al.
patent: 5153470 (1992-10-01), Miyaji et al.
patent: 5179483 (1993-01-01), Lowe

Affiliated with

Also associated with

Rating

Spindle 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 Spindle motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spindle motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1408480