Appeal No. 1998-1878 Page 11
Application No. 08/543,734
control all such hydraulic truck functions. The grip portion
of the control handle is rotatable to control direction and
speed of the truck. A switch 96 is located adjacent one end
of the rotatable grip portion for selecting a variety of
hydraulic functions by the same movements forwardly and
rearwardly of the operator control handle along the control
shaft 60. Electrical and hydraulic systems control the
various hydraulic functions and are operatively connected to
the control handle for operator selection of direction and
speed of the truck as well as simultaneous operation of any
selected hydraulic function one at a time only. Left and
right steering is controlled by a separate steering control 24
(col. 1, lines 62-68).
Schultz is also concerned with minimizing operator
fatigue (col. 1, lines 57-61). Accordingly, the handle
control portion is designed to be located at its most
convenient and comfortable position, specifically,
. . . in the operator's compartment on a bias to the
longitudinal axis of the truck so that when in
normal operating position it is not necessary that
the operator turn his body to any substantial
degree, but merely his head, in looking forwardly or
rearwardly in those directions of truck operation
[col. 1, lines 29-35].
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