Appeal No. 97-0759
Application 08/155,564
structure with a contact stem protruding therefrom, because both
Karl and Hagberg are in the same field of endeavor.
We disagree. Not everything in the same field of endeavor
can be interchanged at will. If that were the case, then as long
as the prior art references were in the same field of endeavor,
we could selectively pick and choose elements from one and place
them arbitrarily anywhere in the other without regard to any
motivation or reasonable suggestion to do so, which is improper.
Here, the most one with ordinary skill in the art would glean
from Hagberg is that the head structure 9 might be replaced by
the partly spherical, partly frustoconical structure of Karl. We
can see no motivation whatsoever for one with ordinary skill in
the art to add Hagberg's contact stem to Karl.
In Hagberg, the contact stem as referred to by the examiner
is evidently the control pin 45 which has a slightly reduced
diameter at one end known as the rounded nib 47. The purpose of
the control pin and nib is to make selective contact with the
movable blades of the lever arrangement below (Figures 2-4) to
move them for causing electrical contact to be made or broken
between contact terminals. In Karl, the corresponding electrical
connection function is performed by a contact element 17 attached
to seat 10 on the opposite end of head structure 9 (see Figures 1
-4-
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Last modified: November 3, 2007