Appeal No. 96-1812
Application No. 07/984,762
application.
Appellants’ invention pertains to a closure vessel
assembly for use in laboratory work within a range of
temperatures between -196°C and +100°C. With this assembly
(specification, page 4), a minimum surface pressure is
obtained, as disclosed, by having infinite radii of curvature
for the lip sealing surface and vessel sealing surface, i.e.,
the lip sealing surface and the vessel sealing surface are
having line contact with each other as seen in a longitudinal
cross-section. With a preferred embodiment, only one of the
radii of curvature of the lip and vessel sealing surfaces is
infinite, with the other of the radii of curvature is of a
smaller value which is still substantially greater than zero;
a radius of curvature of about 1 mm is indicated as providing
for excellent results. A further understanding of the
invention can be derived from a reading of exemplary claim 25,
a copy of which appears in the appendix to the main brief
(Paper No. 15).
As evidence of obviousness, the examiner has applied the
documents listed below:
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