Appeal No. 2000-1349
Application No. 08/475,026
imposed by the platforms on the tractor. In any case, it
would have been obvious to one of ordinary skill in the art
to mount the platforms and their adjusting structures on
the frame of the tractor in the instance where they are
part of Giladi’s self-proplelled tractor, for the self-
evident purpose of providing a firm support for the
platforms.
Like the Giladi patent, the Cepparo reference
discloses an agricultural tractor attachment having a pair
of platforms 8 that are located on opposite sides of a
vehicle frame as shown in Figure 4 for supporting workmen
at elevated positions above the ground. As shown in Figure
4 of the Cepparo reference, each platform is connected to
the frame by structures which provide for the adjustment of
each frame in a pure horizontal direction and also in a
pure vertical direction in a manner corresponding to that
recited in claims 1 and 15. It would have been obvious to
one of ordinary skill in the art to substitute Cepparo’s
vertical and horizontal platform adjustment structure as
shown in Figure 4 of Cepparo for Giladi’s compound platform
adjustment structure for the self-evident purpose of
simplifying the adjustment structure, the motion imparted
to the platforms and also the controls for making the
6
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