Dynamo electric machines and stators for use in same
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United States of America Patent
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Aug 17, 2004
Issued Date -
N/A
app pub date -
Feb 15, 2002
filing date -
Aug 6, 1997
priority date (Note) -
Expired
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Abstract
Dynamo electric machines and stators for use in such machines are provided. The stators comprise plates configured to be substantially flat and a plurality of spaced apart projections or teeth extending away from the plate and, together with the plate defining a plurality of slots therebetween. The stators comprise masses of metal particles. Using stators made from such metal particles provides enhanced machine efficiency, which is believed to be because of reduced eddy current effects in the stator. Motors including rotors having generally flat arrays of permanent magnetic poles and such stators which are spaced apart from and generally facing the permanent magnetic poles and have a plurality of magnetic windings, and pumps powered by such motors are included within the scope of the present invention.
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