Appeal No. 2006-2752
Application No. 10/309,007
bars (not illustrated) which have the same sectional area as
the teeth 30 through 32 and transferred to the stator teeth
30 through 32 having U-shaped tips 30a, 31a, 32a as shown
line in FIG. 3. Furthermore, the U-shaped teeth tips 30a,
31a, 32a are transformed and flared to become T-shaped tips
30b as shown by dotted line in FIG. 3 by a certain
mechanical means. The T-shaped tips 30b of the teeth 30
through 32 change the slots 33 from open-slot to semi-closed
slot and serve to hold the coils 27 through 29 in the slots
33 radially tightly.
With the above discussion in mind, we find that with regard
to representative claim 1, Silvertown teaches an alternator that
includes five phase output winding portions arranged in an
annular shape, and followed by a five-phase full wave rectifier
for producing a d.c. output. Next, we find that Ishida teaches
an alternator having a stator core with a plurality of
circumferentially arranged teeth. It is our view that one of
ordinary skill in that art would have aptly recognized that the
five-phase winding spans an electrical angular phase totaling 360
degrees, thereby allowing each of the winding portions to lead or
lag one another by 72 degrees (i.e. one fifth of said total
amount). Further, the ordinarily skilled artisan, through
teachings available in the prior art, would have been readily
apprised of the actual angular phase differences between the
different windings in a five-phase winding arranged in an annular
configuration. See e.g. Buening, at page 2, paragraph 27.
Consequently, we do not find error in the Examiner’s stated
position, which concludes that the combination of Silvertown and
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