Appeal No. 1998-3348 Page 13
Application No. 08/541,948
affect the resonant frequencies.” Col. 5, ll. 46-48. Relying
on Morehouse only to teach “that preloaded bearing cartridges
are old and well known[,]” (Examiner's Answer at 4), the
examiner fails to allege, let alone show, that the reference
cures the deficiency of Morita and Boutaghou.
Because Morita merely recognizes a relationship between
the resonance frequency of an HDD, the mass of the HDD, and
the rigidity of some of its components, and Boutaghou merely
mentions that variations in certain parameters of an HDD cause
variations in the resonant frequency of an HDD, we are not
persuaded that the teachings from the prior art would appear
to have suggested the limitations of "the spindle motor and
the disk are selected to minimize the difference in a first
mechanical resonance frequency value and a second mechanical
resonance frequency value, wherein ... the first mechanical
resonance frequency [is] 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 and the second mechanical resonance
frequency [is] associated with the coupling of the pitching
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