Apparatus for reducing spindle motor magnetic drag
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United States of America Patent
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Apr 5, 2005
Grant Date -
Jun 13, 2002
app pub date -
Jun 28, 2001
filing date -
Dec 13, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A magnetic flux shield extending substantially the entire width of a magnetic disk drive spindle motor magnet is mounted between the magnet and the disk drive's base frame and rotates with the magnet. The flux shield is formed of a magnetic material to capture any stray magnetic flux from the motor magnet that may produce power draining eddy currents in the base frame.
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