Appeal No. 1999-1478
Application 08/742,327
portion of the main shaft being nitride treated, said portion
of the main shaft beginning at but not including the gear
center hold down threads to and including the yoke end and the
tapered yoke end of the main shaft, and the tapered yoke end
having a dry film lubricant applied thereon.
The prior art references relied upon by the examiner in
rejecting the appealed claims are:
Connard 3,344,817 Oct.
3, 1967
Itoh et al. (Itoh) 5,215,823 Jun. 1,
1993
Also relied upon is appellants’ admitted prior art (pages
1-3). Appellants’ admitted prior art includes a coal
pulverizer 2 with a yoke 12, a horizontal pinion shaft 16 and
a main shaft 14, the main shaft 14 including a yoke end 20 at
one end of the main shaft 14 with the yoke end 20 including a
tapered yoke end 25 at a distal end thereof, the tapered yoke
end 25 of the main shaft 14 terminating with a threaded
portion 26, the main shaft 14 further including gear center
hold down threads 24 dividing the yoke end 20 from the other
end of the main shaft 14.3
3 It is noted that the specification of the present
application refers to the main shaft using two different
5
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