Appeal 2007-0672
Application 10/399,702
(Specification p. 2). Appellant does not disclose that this particular hardness
range produces unexpected results.
Claim 11 is directed to a closure having a closure body made of a first
plastic material and a sealing element, having a deformable collar made of a
second plastic material, and protruding radially inwardly.
Claim 11 also recites that the sealing element has a pressure surface
exposed to inner pressure.
Theis discloses a closure 10 having a closure body made of a first
plastic material (col. 3, ll. 52-53). The closure 10 includes a sealing element
having a deformable collar 48 made of a second plastic material (col. 4, ll.
44 to 46). The sealing element or gasket 48 has an elongate member 70 that
protrudes radially inwardly (Figure 7).
Gasket 48 is disposed of a rubber-like thermal plastic elastomer and is
deformable. Elongate member 78 is capable of releasingly engaging the rim
58 of the container (Figure 7). The elongate member 70 has a surface (the
surface in Figure 7 that is labeled “70”) that is capable of being exposed to
pressure within the container and were the surface exposed to pressure in an
outward direction (in the direction of the arrow pointing the “70”) the
elongate member 70 would deform in a manner such that the collar becomes
increasingly supported on the neck rim of the container and sealingly closes
the opening.
Roeder discloses closure 18 having a closure body that includes a
sealing element having a deformable collar (page 2, ll. 3 to 12). The collar
has an annular gasket 25 with a portion that protrudes radially inwardly
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