Appeal No. 2005-2603 Παγε 4
Application No. 10/118,068
and quiet and vibrationless to a maximum degree" (page 1, lines 13-20). Batchelder
further teaches that "[s]ilence of operation is essential in many applications, and this
advantage is achieved in my present mechanism" (page 1, lines 21-23) and that "by the
utilization of toothless driving and driven members, the cost of cutting the gear teeth is
totally eliminated, and greater strength is obtained, not only in the high speed shaft, but
in all cooperating parts, due to the fact that there are no teeth cut in the contacting
areas" (page 1, lines 28-34).
Batchelder discloses a particular embodiment of gearless speed change
mechanism comprising a pair of driving rollers 7, 8 connected to high speed shaft 6,
each of the rollers engaging a set of rollers 18, 21 retained in retainers 11, 24. The
rollers 18, 21 internally engage rings 19 and 37, respectively. As explained by
Batchelder, in the paragraph bridging pages 3 and 4,
[t]he rotative speed of the ring 19 will be considerably less
than the rotative speed of the roller 7, due to the difference
in ratios between the face 20 of said ring 19 and the
diameter of the roller 7. Simultaneously with the rotation of
the roller 7, the roller 8 will be rotated. Rotation of said roller
8 will effect rotation of the interposed rollers 21 which are in
engagement with the face 36 of the ring 37, and would
normally tend to rotate said ring 37 at a speed of rotation
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