Appeal No. 1998-3348 Page 14
Application No. 08/541,948
mode mechanical resonance frequency of the no-load spindle
motor and the primary mechanical resonance frequency of a
plurality of disks to be loaded, so that the first mechanical
resonance frequency and the second mechanical resonance
frequency do not differ for one disk loaded and for plural
disks loaded;]" "shaft parameters are adjusted 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[;]” “said spindle motor
includes a cartridge-like subassembly made by previously
applying axial opposingly directed preloads to outer and inner
rings of a bearing 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
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Last modified: November 3, 2007