Rigid foam insulating panel with compressible joint

1 . An insulating panel comprising:

a panel structure of closed cell foam comprising a first portion and a second portion; and

at least one compressible joint connecting the first portion to the second portion, the compressible joint comprising at least one segment with a cross-sectional thickness less than a cross-sectional thickness of the panel structure.

2 . The insulating panel of claim 1 wherein the compressible joint is elastically deformable in response to a compressive force is applied to side edges of the panel structure.

3 . The insulating panel of claim 1 wherein the segment is oriented at an angle with respect to first and second major surfaces of the panel structure.

4 . The insulating panel of claim 1 wherein the segment comprises a curvilinear shape.

5 . The insulating panel of claim 1 wherein the compressible joint comprises a closed structure.

6 . The insulating panel of claim 1 wherein the segments are configured to deform symmetrically in response to a compression force is applied to side edges of the panel structure.

7 . The insulating panel of claim 1 wherein the compressible joint in a fully compressed configuration is located substantially between first and second major surfaces of the panel structure.

8 . The insulating panel of claim 1 wherein the compressible joint in a compressed configuration generates an expansion force generally parallel to first and second major surfaces of the panel structure.

9 . The insulating panel of claim 1 comprising at least one deformable fin located on side edges of the panel structure.

10 . The insulating panel of claim 1 comprising a plurality of directional fins located on side edges of the panel structure.

11 . The insulating panel of claim 1 comprising a plurality of non-parallel compressible joints.

12 . The insulating panel of claim 1 wherein the compressible joints comprise score lines for cutting or snapping the insulating panel into the desired sizes.

13 . The insulating panel of claim 1 wherein the compressible joint permits the first portion of the panel structure to move in at least two degrees of freedom relative to the second portion of the panel structure.

14 . The insulating panel of claim 1 wherein major surfaces of the panel structure comprise a non-rectangular shape.

15 . The insulating pane of claim 1 wherein the panel structure and the compressible joint comprises a monolithic structure.

16 . The insulating panel of claim 1 wherein the first and second portions and the compressible joint comprises a unitary structure integrally formed from the closed cell foam.

17 . The insulating panel of claim 1 wherein the compressible joint comprises a multi-layered structure.

18 . An insulating panel comprising:

a panel structure of closed cell foam comprising a plurality of side edges; and

at least one compressible joint extending along at least of one of the side edges, the compressible joint comprising at least one segment with a cross-sectional thickness less than a cross-sectional thickness of the panel structure, 1 wherein the first and second portions and the compressible joint comprises a unitary structure integrally formed from the closed cell foam.

19 . A method of installing an insulating panel comprising the steps of:

sizing a panel structure slightly larger than a space between to opposing surfaces;

applying a compressive force to a compressible joint connecting first and second portion of the panel structure so the insulating panel is slightly smaller than the space between the opposing surfaces;

locating the insulating panel between the opposing surfaces;

releasing the compressive force; and

generating an expansion force in the compressible joint that is transmitted through the first and second portions of the panel structure to the opposing surfaces.

20 . The method of claim 19 comprising engaging fins on side edges of the first and second portions with the opposing surfaces.