Appeal No. 1998-0506
Application 08/314,994
"decreasing transition in magnitude" does not prevent
anticipation under the principles of inherency.
The issue is whether De Filippis discloses, expressly
or by principles of inherency, slots aligned with increasing
and decreasing transitions in the magnitude of magnetic
energy of the permanent magnet elements as claimed.
The fact that the slots of the stator in De Filippis
inherently have a modulation function and that the magnets
inherently have increasing and decreasing transitions in the
density of magnetic energy does not mean that the modulation
function is used to reduce cogging torque unless the claimed
alignment is shown. De Filippis describes that the
reluctance torque (cogging torque) can be reduced by
selecting the angular extent " for the permanent magnets
"between a minimum value substantially equal to b of the
pole pitch J and a maximum value of b of the pole pitch J
plus ½ of the angular extent t of the openings of the
recesses 4 in the stator" (col. 4, lines 13-16). Appellant
argues that this is not equivalent to using a modulation
function to reduce cogging torque. We agree. De Filippis
only discusses the angular extent of the permanent magnet
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