Appeal No. 2000-1632
Application No. 09/055,308
material and second balls formed of a second material that is
different from said first material, wherein said first and said
second balls are alternately disposed in said groove.
Independent claim 10 is similar, except that instead of
calling for first and second balls formed of different
materials, the last paragraph of claim 10 requires that the
plurality of balls disposed in the groove “are divided into
first balls each having a first diameter and second balls each
having a second diameter that is different from said first
diameter.”
The following represents our findings of fact with respect
to the scope and content of the Rumsey reference.
We find that Rumsey is directed to a vibration damper
structure adapted to be secured to a rotating shaft (column 1,
lines 12-15). The damper structure of Rumsey comprises a casing
11 formed by sections 19 and 20 to jointly define a chamber 15
therebetween (column 2, lines 14-16). An inertia member 12 of
high moment of inertia is supported in the chamber 15 (column 2,
line 72, through column 3, line 5). The inertia member 12 and
the casing sections 19 and 20 are provided with recessed bearing
tracks for receiving plastic bearing balls 13 to restrict axial
and radial movement of the inertia member relative to the
4
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