Appeal No. 1996-4124
Application No. 08/307,088
of some specific teachings that they should or could be
combined, is such a well-settled law that it hardly needs to
be repeated here."
We find that Hahn suggests modification to use his
grinding method to grind tooth flanks in toothed wheels. Hahn
states that the multipurpose grinding machine of Figure 15 can
be used to produce "sector-shaped parts." See column 14,
lines
14 through 17. We find the disclosure of grinding sector
shaped parts suggests that the grinding machine can be used to
grind teeth in a tooth wheel. Further, we find that Loehrke
teaches a grinding disc which cuts two tooth flanks. See
grinding disc item 16 of Loehrke’s Figure 1 and the
description on column 9, lines 45 to 55. Thus, we find that
one of ordinary skill in the art would recognize that
Loehrke’s grinding disc shown in
Figure 1 could be used in the grinding machine depicted in
Hahn’s
Figure 15 to grind tooth flanks.
Further, we find Loehrke provides suggestion to use test
tooth wheel measurements in lieu of theoretical calculations.
17
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