High performance linear motor and magnet assembly therefor
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United States of America Patent
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Nov 25, 2008
Grant Date -
Mar 8, 2007
app pub date -
Oct 26, 2006
filing date -
Feb 21, 2002
priority date (Note) -
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Abstract
A magnet assembly includes a back iron and an array of magnets. The back iron is in the form of a plate having opposed surfaces. The magnets are arranged along one of the surfaces, with the other surface being dimensioned and configured according to the magnetic field distribution associated with the magnets. The back iron geometry provides for reduced mass, reduced leakage flux, and high flux densities to improve performance of a linear motor that employs such a magnet assembly.
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