Appeal No. 2000-1841
Application 09/016,738
34, these elements being related as shown in Figure 1. The
examiner (see page 4 in the answer) concedes that this
assembly does not respond to the limitations in independent
claims 1 and 9 requiring (1) the lift arm to be a “box-boom
lift arm” having first and second extensions spaced apart1
to define a first lever space therebetween and (2) the rear
tilt lever to extend through the first lever space. In
contrast, Shook’s link arm consists of
bar-like link arms 14 and Shook’s rear tilt lever consists of
crank arms 29 disposed outwardly of the link arms 14.
Brown discloses an earth-working device composed of a
forked dipper arm 10, an earth-working implement 11, and
linkage 12. As described in the reference, and shown in
Figure 1,
1The appellants’ specification (page 13) defines the term
“box boom lift arm” as meaning
a lift arm assembly fabricated from a number of
metal plates such that the lift arm assembly has (i)
a generally hollow interior and (ii) the structure
of the lift arm assembly has a generally rectangular
shaped transverse cross section which extends for a
substantial distance along the length of the lift
arm assembly.
5
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