Appeal No. 1999-1478
Application 08/742,327
claimed subject matter. Since it is our determination that
the teachings and suggestions found in Itoh would not have led
one of ordinary skill in the art to provide such a dry film
lubricant on the tapered yoke end of a main shaft in a coal
pulverizer like that shown in the admitted prior art, we
refuse to sustain the examiner's rejection of claim 1 under 35
U.S.C. § 103(a).
We have also considered the examiner’s rejection of claim
1 over appellants’ admitted prior art in view of Connard and
Itoh. Itoh has been discussed above. Connard discloses a
process for selectively hardening a portion of a steel screw.
Connard provides no disclosure concerning dry film lubricants.
Therefore, the Connard reference provides no additional
teachings which would overcome the deficiencies discussed
above concerning hindsight and a lack of teaching to provide
such a dry film lubricant on the tapered yoke end of a main
shaft in a coal
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