Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2006-06-02
2009-06-30
Leung, Quyen P (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
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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Itagaki Atsushi
Kojima Tomonori
Matsuzaki Hirokazu
Murakami Masanori
Tanabe Yoichi
Fujitsu General Limited
Leung Quyen P
Mok Alex W
Sartori Michael A.
Schwarz Steven J.
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