Appeal 2007-0255
Application 10/331,878
Appellant’s claimed invention is directed to an evacuated panel that
enables the thermal insulation of a body having non-planar surfaces
(Specification [0003]). Claims 24 and 53 are representative of the claimed
invention and read as follows:
24. An evacuated panel for thermal insulation of a
body having non-planar surfaces, the panel having
two main faces and consisting of:
a flexible envelope comprising at least one
barrier sheet;
a filling material inside the envelope, the
filling material formed of at least two boards of an
open cell polymeric foam, the boards lying one
over another in such a manner that the boards are
free to slide over one another at least in a direction
parallel to curvature of the boards when the panel
is bent; and
plastic sheets inserted between pairs of
adjacent boards to favor reciprocal sliding of the
boards relative to each other.
53. An evacuated panel for thermal insulation of a
body having non-planar surfaces, the panel having
two main faces and comprising:
a flexible envelope comprising at least one
barrier sheet;
a filling material inside the envelope, the
filling material formed of at least two boards of an
open cell polymeric foam, the boards lying one
over another and being substantially flat sheets
having sufficient flexibility to allow curving of the
evacuated panel with the boards sliding directly on
each other to conform the panel to a non-planar
surface.
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