Appeal No. 1997-3089 Page 5
Application No. 08/577,839
The “rings” of King and Allegre appear to be part of a
squirrel cage structure which structure, as a whole, acts to
reduce vibration. Thus, we agree with appellants that there
does not appear to be any reason to dissect these rings from
the rest of the squirrel cage structures and use only those
rings in Persson to achieve the claimed invention. There
clearly is no suggestion in any of these references to make
such a modification.
Moreover, appellants argue that even if such a combination
were to be made, the rings of King and Allegre have no time-
varying current induced in them by a rotating flux. Appellants
submit sketches and an explanation as to why the rings of King
and Allegre have no time-varying current induced in them by a
rotating flux [principal brief-pages 29-31] and such
explanation appears reasonable to us. The examiner’s response
[answer-page 9] is to state that it is a “well-known
characteristic of electromagnetic fields that when a rotating
magnetic flux penetrates a conductive device the flux induces a
time varying current in the device.” However, based on
appellants’ explanation, it does not appear that the flux lines
would pass through ring 21 in King, for example. But, again,
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