Appeal 2007-1942
Application 10/368,975
produced on impact and thereby limit the localized transmission of large
forces to the user’s body.” (Sacks 1:52-67).
10. As illustrated at Figure 3 of Sacks, the shield is formed of an outer
material made of nylon and having sandwiched within:
A first layer of “two sheets of fabric woven from Kevlar” (Ref.
1 of Fig. 3),
A second layer of “[a] number of sheets of Kevlar fabric
[individual sheets bonded or stitched together]” (Ref. 2 of Fig. 3),
A third layer or “[o]ne or two (or more if desired) thin flexible
polycarbonate sheets” (Ref. 3 of Fig. 3), and
A fourth layer of “[o]ne (or more if desired) resiliently
compressible sheet of a foamed plastics material” such as a cross-
linked polyethylene (Ref. 4 of Fig. 3).
(Sacks 2:58-3:24).
11. According to Sacks, the first layer is that layer which, in use, faces away
from the person and the fourth layer being that which faces toward the
person. (Sacks 1:47-60).
12. In the Figure 3 embodiment, there is not shown a pair of polyethylene
layers disposed symmetrically about a central strand of aramid fibers.
13. Sacks states that, in addition to the four layers set out above, an “impact
absorbing material may also be provided at the front of said fabric, that is
at the side thereof which in use faces away from the person’s body, such
material being as mentioned in the preceding paragraph and/or
comprising a layer of steel or like strong material.” (Sacks 2:3-8,
emphasis added).
5
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 Next
Last modified: September 9, 2013