Appeal No. 2001-2451
Application 09/157,705
APPENDIX
1. A dimensionally stable mattress and furniture insulator
pad, comprising:
a polyurethane core foam sheet having an upper surface and a
lower surface;
a first stiffening layer having an upper face and a lower
face, wherein the lower face is attached to the upper surface of
the core foam sheet;
a second stiffening layer having an upper face and a lower
face wherein the upper face is attached to the lower surface of
the core foam sheet;
a first outer polyurethane foam sheet attached adjacent to
the top face of the first stiffening layer so that the first
stiffening layer is substantially completely covered by the outer
foam sheet; and
a second outer polyurethane foam sheet attached adjacent to
the bottom face of the second stiffening layer so that the second
stiffening layer is substantially completely covered by the outer
foam sheet;
so that the core foam sheet with first and second stiffening
layers and first and second outer foam sheets attached thereto
forms the dimensionally stable mattress and furniture insulator
pad with a sufficient stiffness to resist bending and
telegraphing.
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