Appeal No. 2003-2134 Page 5
Application No. 09/421,675
side members 12, which extend along the sides of the machine and also mount an axle
and differential 13 at the front of the machine. The rearward portions of the side
members 12 are joined together with an overhead bridge construction 14 which has
counterweights thereon. The overhead bridge construction 14 overlies a wheel
15 that mounts a wide flotation tire. The wheel 15 is mounted on a pivot support
assembly 16 and pivots underneath the bridge 14 as it is steered. The forward axle 13
is used for mounting a pair of hubs that in turn drive wheels 20 which have wide
flotation tires thereon.
As shown in Figures 3 and 4 of Szarkowski , the side frame members 12 each
have a pair of spaced ears 12A that extend forwardly of the axle 13 and the ears 12A of
each pair are spaced apart and are used for pivotally mounting a mast assembly 25
that is used for mounting a fork 26 comprising two prongs that are spaced apart in a
usual manner. The mast assembly 25 comprises a pair of upright rails 27 which are
connected by a lower cross frame member 28. The upright rails 27 are each fitted
between a pair of ears 12A and are pivotally mounted to the respective ears with a pin
30 to permit pivoting of the mast assembly about a transverse horizontal axis from a
position wherein the forks 26 are substantially parallel to the ground, or with the outer
ends tilted downward slightly, to a position wherein the upper ends of the upright rails
27 are tilted a substantial distance rearwardly and the outer end of the fork extends
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Last modified: November 3, 2007