Appeal No. 2006-2116
Application No. 08/879,517
both appellant’s patent and Ito are concerned (Ushiwata et al.,
U.S. Patent 5,425,294, col. 1, l. 35-36; Ito et al., U.S. Patent
5,357,834, col. 1, l. 18-19)), all pertain to the particular
problem with which the inventor of the patented claims before us
was concerned. The scope of the particular problem with which the
inventor of the patented claims before us was concerned is broadly
defined in the specification of appellant’s U.S. Patent 5,425,294
at col. 1, l. 22-33, as follows (emphasis added):
When a workpiece is normally cut by the tilted saw assembly
10 . . . the angle of the desired tilt is usually 45 degrees.
However, the end . . . of a motor housing . . . comes into
contact with the top of [the] base . . . when the saw
assembly . . . is tilted rightward by an angle of 20 to
30 degrees, as shown in FIG. 7. For that reason, the
workpiece cannot be cut at 45 degrees. Therefore, to cut the
workpiece, the saw assembly . . . is tilted leftward, the
workpiece is cut at the left-hand end and then the workpiece
is flipped around and cut at the right-hand end. This means
that the efficiency of the cutting work is very low.
20
To solve this problem . . . .
Appellant, Ito, Johnson, Ambrosio and Japanese Laid-Open
Utility Model Publication No. 63-49901/Japanese Utility Model
Application (OPI) No. 49901/88 cited in appellant’s patent
specification, all sought solutions to substantially the same
problem, i.e., how to make compound angular cuts, including left
and right 45 degree angular cuts, on a workpiece without flipping
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