Appeal No. 97-0766 Page 9
Application No. 08/287,448
that the annular machine element has an inner wall contiguous
with an outer peripheral surface of the hub ring.
The teachings of Gebhardt have been set forth previously.
Withers discloses an elastomeric vibrational damper. As
shown in Figure 2, the damper includes a hub section 11, an
intermediary mounting member 15, an elastomeric material
sleeve 25, an inertia ring 19 and an inertia ring member 26
with V-belt grooves 30.
After the scope and content of the prior art are
determined, the differences between the prior art and the
claims at issue are to be ascertained. Graham v. John Deere
Co., 383 U.S. 1, 17-18, 148 USPQ 459, 467 (1966).
Based on our analysis and review of Gebhardt and claim
18, it is our opinion that the only difference is the
limitation that the annular machine part includes a planar hub
ring and an annular machine element having an inner wall
contiguous with an outer peripheral surface of the hub ring.
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