Appeal No. 1998-1878 Page 9
Application No. 08/543,734
toward adjustable stops 30, 31 by spring 32. Stops 30, 31 are
adjusted so that when the control lever 13 is in the neutral
position of Fig. 1 and in the neutral position of Fig. 3, the
abutment of levers 26, 27 with the stops 30, 31 causes
linkages 15, 16 to cause pumps 17, 18 to be in the neutral
position. As further shown in FIG. 3, control lever 13 is
further mounted for pivotal movement on the pivot 35 for
pivoting about an axis 36 parallel to axis 29. More
specifically, the control lever 13 is mounted to a T-member 37
pivotally mounted to pivot 35 and carrying at the distal end
of opposed arms 38 and 39 thereof a pair of rollers 40 and 41,
respectively. Roller 40 is adapted to engage an upper surface
42 on lever 26 and roller 41 is adapted to engage an upper
surface 43 on lever 27 so as to effect a movement of the
levers selectively downwardly from the abutment with stops 30
and 31 to effect a selective differential movement between the
linkages 15 and 16 as a function of the disposition of the
control lever 13 in the left or right position shown in FIG.
3.
With the control lever in the neutral position of Fig. 3,
a forward or reverse movement of the control lever, as shown
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Last modified: November 3, 2007