Appeal No. 96-3202
Application No. 08/183,464
mount Shiraya's cam on a cam shaft and to provide the outer
surface of the cam with a solid film lubricant as suggested by
Oda to provide excellent wear-resisting and friction-resisting
performance even at high temperature with dry conditions in
which engines are used. Additionally, it would have been
obvious to one of ordinary skill in the art at the time of the
appellants' invention to utilize the solid film lubricant
comprised of graphite and at least one of boron nitride and
molybdenum disulfide in either one of a high temperature
polymer and epoxy base of Rao (which impregnates the surface)10
for the solid film lubricant on the outer surfaces of the cam
and the tappet to further decrease friction as set forth above
with respect to claim 1.
The arguments advanced by the appellants (brief, pp. 23-
24 and reply brief, pp. 3-4) does not persuade us that claim
10Particularly since the solid film lubricant disclosed
by Rao is basically the same as the solid film lubricant
disclosed by the appellants, there is a reasonable basis to
conclude that the solid film lubricant 35 of Rao inherently
has an affinity for oil and promotes rapid formation of a
stable oil film to reduce friction.
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