Appeal No. 95-3378
Application No. 08/126,443
intersect” (page 465 ).
The examiner indicates (Answer, page 4) that a “model is
shown in the upper portion of figure 10.34 where the union of
cylinders define a sectioning object which is combined with a
base model (the sphere),” and that “Mortenson further discloses
at page 462 that the resulting combination of primitive models is
also a model.” The examiner acknowledges (Answer, pages 4 and 5)
the following:
It is noted that Mortenson does not explicitly disclose
that a resulting view is generated, however, it would
have been obvious to one of ordinary skill in the art
at the time the invention was made to include this
feature because it is well known that modeling methods
such as those disclosed by Mortenson are used in
computer systems (in CAD systems in particular) and
that in such systems it is often desired that the
results of an operation be displayed for review or
confirmation. It is also noted that Mortenson does not
explicitly disclose a modifying operation, however, it
would have been obvious to one of ordinary skill in the
art at the time the invention was made to include this
feature because modeling methods such as those
disclosed by Mortenson are used in computer systems (in
CAD systems in particular) and such systems often
require that the model be modified (changing sizes or
adding additional primitives for example). It is noted
that Mortenson does not explicitly disclose that the
sectioning object is defined while simultaneously
viewing the base model, however, it would have been
obvious to one of ordinary skill in the art at the time
the invention was made to do so because Mortenson does
teach at page 463 that the position of each element
must be specified and figure 10.36 shows that in order
to generate a desired sectioned or cutaway view the
proper position for the sectioning object, in respect
to the base model, must be selected and it is well
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