Sense magnet assembly including multiple annular portions with alternating magnetic poles
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United States of America Patent
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Jan 3, 2012
Grant Date -
Oct 16, 2008
app pub date -
Apr 15, 2008
filing date -
Apr 16, 2007
priority date (Note) -
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Abstract
A sense magnet assembly including a generally circular hub portion defining a central axis. The hub portion includes a generally disk-shaped base portion and an outer wall extending axially from an outer edge of the base portion. An elastic magnet material is provided including a plurality of annular portions positioned at radially spaced locations. A substantially rigid annular divider formed of a non-magnetic material is located between adjacent pairs of the annular portions of the magnet material, and a rigid cover is provided extending over the magnet material to limit movement of the magnet material in response to centrifugal forces.
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