Electric motor having rotor shaft rotatably supported on a beari

Details Electric motor having rotor shaft rotatably supported on a beari Electric motor having rotor shaft rotatably supported on a beari

1997-12-03

1999-08-24

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310 905, H02K 709, F16C 3906, F16C 3204

Patent

active

059428252

ABSTRACT:
An electric motor having a rotor and stator includes a magnetic hollow rotating shaft to which the rotor is fixed. A magnetic cylindrical bearing is inserted into the magnetic hollow rotating shaft such that a radial repulsive force is generated between the magnetic hollow rotating shaft and the magnetic bearing. A first fixed magnetic member is disposed at a top of the magnetic cylindrical bearing, and a rotating magnetic member is disposed at a top of the magnetic hollow rotating shaft such that the magnetic hollow rotating shaft can be supported by axial repulsive force generated between those magnetic members. The magnetic members are vertically adjustable for varying the axial clearance therebetween.

REFERENCES:
patent: 4726640 (1988-02-01), Iwana et al.

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