A “Toolbox” for Forensic Engineers

390 Forensic Materials Engineering: Case Studies
Here are some technical definitions from the 1964 edition of Chambers
Technical Dictionary, a popular technical dictionary in the U.K.
flange = a projecting rim, as the rim of a wheel which runs on
rails, the top and bottom members of an I-beam
strut = any light structural member or long column which sustains
an axial compressive load
A general definition of rib was not satisfactory, but the Oxford English Dictionary
states
rib = a raised band, a prominence running in a line
The components are shown in the preferred embodiment of Figure 13.5B.
13.2.7 Alternative Interpretation
In order to bring the Taylor lifting rim into the claim, some flexibility in the
meaning of the key terms was needed by the plaintiffs in the case. One of
the experts appearing on behalf of Schneider labeled the components of the
Taylor bin as shown in Figure 13.7. There are a number of problems with
this interpretation. Let us look at the common identities first: the sidewall
and struts are clearly not controversial, and cannot be confused. The problems
arise with the identification of the rib, flange and reinforcing member.
Thus the rib is identified with part of the outer flange, and the reinforcing
member is divided into two separate parts, and flank each side of the rib.
In this case of identity of parts it is necessary to refer to the description
of the invention in the patent-in-suit. The relation of the parts is described
generally first at line 87 on page 1 of the patent:
Conveniently, the impact bar, the reinforcing member
and the flange together define an assembly of U-shape in
cross-section, opening towards the base of the container
The structure is described in more detail on page 2 of the Schneider patent
from line 45 onward. From line 65 on, the patentee describes the function
of the various components thus:
Where the refuse container is provided with a device for
suspension in a so-called comb bar, the spacing between
the individual struts 5 is approximately uniform as illustrated
in Figure 13.4. The intervening space is however
divided up by smaller struts 8. The lower edges 9 of these