Appeal No. 1998-1878 Page 6
Application No. 08/543,734
operator’s hand and unsupported arm as controlled by the
second smaller muscle group and (2) a second means rotatable
about an axis generally perpendicular to the first axis being
operable by the push or pull action of the operator’s
unsupported arm moving in the “Y” direction of motion
involving the first larger muscle group thereby minimizing
operator fatigue due to prolonged operation by matching the
large and smaller muscle groups with the larger and smaller
resistive forces.
Claim 16 recites a powered industrial lift truck having:
(A) a stand up operator’s compartment designed to orient
the operator relative to the direction of travel for
ergonomical use of different muscle groups of the operator’s
body, a first muscle group comprising those that are capable
of imparting a rolling motion in a right to left manner
relative to the direction the operator is facing to the
operator’s arm and hand in a first “X” direction of the
operator’s compartment corresponding to the direction of
travel and a second muscle group comprising those that are
capable of imparting to the operator’s arm and shoulder a push
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