Axial air gap type electric motor

Electrical generator or motor structure – Dynamoelectric – Rotary

Reexamination Certificate

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Details

C310S091000, C310S156360, C310S156370, C310S268000

Reexamination Certificate

active

07554226

ABSTRACT:
A magnetic pre-pressurizing section for pre-pressurizing the inner ring of the bearing in the axial direction by a difference of magnetic forces of permanent magnets of the two rotors is arranged. The magnetic pre-pressurizing section is constructed by a difference of a magnetizing amount for forming permanent magnets8b,9barranged in the respective rotors. The magnetic pre-pressurizing section is also constructed by a difference of distances of an air gap L1of a stator2and a permanent magnet8b1, and an air gap L2of the stator2and a permanent magnet9b1. The magnetic pre-pressurizing section is also constructed by a difference of thicknesses of the rotating axis direction of a permanent magnet8b1and a permanent magnet9b2arranged in the respective rotors.

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patent: 2003-161328 (2003-06-01), None
patent: 2004-282989 (2004-10-01), None
patent: 2004 282989 (2004-10-01), None

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