Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2007-05-09
2009-10-06
Lam, Thanh (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S156530, C310S156560, C310S261100
Reexamination Certificate
active
07598645
ABSTRACT:
A rotor includes a cylindrical rotor core having an outer circumferential surface and a plurality of magnet insertion holes formed in the rotor core and arranged circumferentially at a preset angular interval about the rotational axis of the rotor core. Each hole extends in a direction parallel to the rotational axis and has a cross section of a generally elongated slit. The elongated slit is curved concave relative to the circumferential surface and has a radially inward side, a radially outward side, and two ends that are respectively spaced apart from the circumferential surface by two bridges, wherein each bridge has thinner and thicker portions that are respectively positioned near the radially inward and outward sides. One or more permanent magnets are inserted in each hole and arranged to transfer centrifugal forces acting on the magnets during operation to portions of the bridges.
REFERENCES:
patent: 4327302 (1982-04-01), Hershberger
patent: 5191256 (1993-03-01), Reiter et al.
patent: 5510662 (1996-04-01), Tanimoto et al.
patent: 5945760 (1999-08-01), Honda et al.
patent: 6177745 (2001-01-01), Narita et al.
patent: 6225724 (2001-05-01), Toide et al.
patent: 6441524 (2002-08-01), Kaneko et al.
patent: 6555940 (2003-04-01), Naito et al.
patent: 6906444 (2005-06-01), Hattori et al.
patent: 6984909 (2006-01-01), Kadoya et al.
patent: 6987342 (2006-01-01), Hans
patent: 7196446 (2007-03-01), Hans
patent: 2004/0251763 (2004-12-01), Tamaki et al.
patent: 2005/0001503 (2005-01-01), Hans
patent: 2006/0170301 (2006-08-01), Masuzawa et al.
Chieduko Victor
Ley Josh
Lutz Jon
Buchanan & Ingersoll & Rooney PC
Lam Thanh
UQM Technologies, Inc.
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