Permanent magnet retaining arrangement for high speed rotors
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United States of America Patent
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Aug 5, 2003
Grant Date -
May 8, 2003
app pub date -
Nov 2, 2001
filing date -
Nov 2, 2001
priority date (Note) -
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Abstract
In the embodiments described in the specification, permanent magnets are retained on a permanent magnet rotor rim by inverted U-shaped retainers and in one embodiment the outer surfaces of the retainers converge inwardly in the radially outward direction and engage corresponding surfaces of adjacent pole pieces which converge inwardly in the radially outward direction. In another embodiment the U-shaped retainers are affixed to the rotor rim by screws accessible through openings in the radially outer wall of the retainers and a further embodiment each retainer has outwardly projecting flanges which are affixed to the rotor rim by screws.
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