Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2006-06-20
2006-06-20
Nguyen, Tran (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S216055, C310S216055, C310S267000, C310S268000
Reexamination Certificate
active
07064469
ABSTRACT:
An essentially ring shaped core back for an electrical machine comprising a plurality of stacked, ring shaped sheets of soft magnetic material, a barrier of electrical resistance arranged between two adjacent sheets of soft magnetic material for reducing effects of eddy currents. At least each sheet of soft magnetic material in a subset of said plurality of stacked, ring shaped sheets of soft magnetic material includes a plurality of circumferentially arranged tooth openings that are extending axially through each sheet in said subset of said plurality of stacked, ring shaped sheets of soft magnetic material, additionally, each sheet of said subset of said plurality of stacked, ring shaped sheets of soft magnetic material includes a first inner closing portion and a second inner closing portion that are arranged between each tooth opening and an inner perimeter of said ring shaped sheet of soft magnetic material. Each first inner closing portion is arranged to face a corresponding second inner closing portion.
REFERENCES:
patent: 4365180 (1982-12-01), Licata et al.
patent: 5986377 (1999-11-01), Yamada et al.
patent: 6121711 (2000-09-01), Nakahara et al.
patent: 6362544 (2002-03-01), Johnston et al.
patent: 6566778 (2003-05-01), Hasegawa et al.
patent: 6741005 (2004-05-01), Vohlgemuth
patent: 6759785 (2004-07-01), Miyake et al.
patent: 6784587 (2004-08-01), Miyake et al.
patent: 6856064 (2005-02-01), Masumoto et al.
patent: 2003/0127938 (2003-07-01), Shen et al.
patent: 2003/0201687 (2003-10-01), Asai
patent: 2005/0073213 (2005-04-01), Naito et al.
patent: 363224638 (1987-03-01), None
patent: 363174531 (1988-07-01), None
patent: 10-271716 (1998-10-01), None
patent: WO 00/72426 (2000-11-01), None
Dickinson Philip George
Jack Alan
Manning Chris
Mecrow Barry
Persson Mats
Buchanan & Ingersoll PC
Hëganäs AB
Nguyen Tran
LandOfFree
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