Appeal No. 1998-3348 Page 15
Application No. 08/541,948
frequency of the disk loading spindle motor with the primary
mechanical resonance frequency of disks to be loaded is the
same for one disk loaded and for plural disks loaded[;]”
“means for adjusting at least one of the diameter of the shaft
of a spindle motor, the material of said shaft, the size of a
bearing for holding said shaft by clamping, the pressure
applied to said bearing, the span over the bearing, the
thickness of the disks, the material of the disks, disk
clamping position, and the disk clamping force based on ...
the pitching mode mechanical resonance frequency of a no-load
spindle motor and the primary mechanical resonance frequency
of the disks loaded has been transformed so that the
mechanical resonance frequency determined by coupling the
pitching mode mechanical resonance frequency of the disk
loading spindle motor with the primary mechanical resonance
frequency of disks to be loaded is the same for one disk
loaded and for plural disks loaded[;]” or “determining a first
mechanical resonance frequency associated with the coupling of
the pitching mode mechanical resonance frequency of a no-load
spindle motor and the primary mechanical resonance frequency
of one disk to be loaded; determining a second mechanical
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