Appeal No. 2004-0753
Application No. 10/120,096
Preferably the lateral edges of the modules are formed
by material having a low coefficient of thermal
conductivity, for example a plastics material. In the
preferred embodiment an [aluminum] alloy extrusion is
secured to each lateral edge of each skin of a wall
module, and opposing extrusions are connected together
by an extruded polypropylene or PVC member which is
slid into interlocking engagement with the extrusions
it connects [page 1, lines 81 through 103].
Of particular interest is Higham’s disclosure of the joint
between adjacent wall modules:
Referring now to Figure 2 the opposite lateral
edges of two adjacent wall modules 1A, 1B are shown.
The modules 1A, 1B are similar those illustrated in
Figure 1 except that the edge portion 5 of each skin 2,
3 is secured by rivetting to a generally L-shaped
[aluminum] alloy extrusion 9. Each extrusion is formed
with a longitudinally extending slot 10 communicating
with an enlarged longitudinally extending passage 11.
Adjacent extrusions 9 of each module are interconnected
by a plastics extrusion 12 having a relatively thin
central web portion and enlarged lateral edges
complementary to the passage 11. It will be
appreciated that to assemble a wall module as
illustrated in Figure 2 extrusions 9 are first secured
to edge portions 5 of the skins, and thereafter two
skins are assembled together by sliding a plastics
extrusion 12 into the aligned passages of the skins.
Further, it will be appreciated that the lefthand edge
of the module 1A which is not shown in Figure 2 is
identical to the lefthand edge of the module 1B as
illustrated in Figure 2, and similarly the righthand
lateral edge of the module 1B is the same as the
righthand edge of the module 1A illustrated in Figure
2.
The joint between the modules 1A, 1B is formed by
a generally T-shaped [aluminum] alloy extrusion 13
which is secured by rivets through the edge portions 5
of the skins to the extrusions 9. The extrusion 13 is
located on the exterior of the vehicle body and
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