Appeal No. 2000-1765
Application No. 08/947,895
in a disk player due to an eccentric center of gravity of a disk,
which is the claimed invention of Appellants, but instead is
concerned with the problem of balancing an abrupt unbalance of a
rotational shaft during a high-speed rotation in rotary spray
type metal powder manufacturing apparatus. See Araki, page 3,
lines 25-26, and page 4, lines 1-2. In describing the problem
Araki seeks to solve, Araki discloses that in the metal powder
manufacturing apparatus, a part of a metallic piece cooled and
fixed to the upper surface of a disc installed at the upper end
of a perpendicular rotational shaft is dropped from the disc
during the manufacture of the metal powder. The dropping of the
metallic piece causes abrupt unbalance in the rotational shaft
during a high-speed rotation, likely causing damage to the
bearing supporting the rotational shaft and the rotor. See
Araki, page 2, lines 13-19 and 4-6.
Thus, Araki is not concerned with the problem of dampening
internal vibrations in a disc player generated by the rotation of
the spindle motor due to an eccentric center of gravity of the
disc. Araki does not solve problems caused when a disk with an
eccentric center of gravity caused by a discrepancy between the
rotational center of the disk and the center of gravity of the
disk due to errors in the manufacturing process of the disk is
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