Prefabricated sandwich panel for the construction of walls and partitions

Claim 1

A PREFABRICATED SANDWICH PANEL OF GENERALLY RECTANGULAR SHAPE INCLUDING TWO MAIN WALL FACES PARALLEL TO EACH OTHER AND FOUR EDGE FACES SUBSTANTIALLY PERPENDICULAR TO SAID MAIN WALL FACES, SAID PANEL COMPRISING TWO OPPOSITELY-ARRANGED BOX-LIKE SHELL SECTIONS, EACH OF SAID SHELL SECTIONS INCLUDING A MAIN FACE DEFINING ONE OF THE MAIN FACES OF SAID PANEL AND LATERAL SIDE PORTIONS RESPECTIVELY FACING LIKE LATERAL SIDE PORTIONS OF THE OTHER SHELL SECTION, EACH OF THE LATERAL SIDE PORTIONS OF EACH SHELL SECTION INCLUDING A FIRST EDGE PORTION EXTENDING SUBSTANTIALLY PERPENDICULARLY TO ITS RESPECTIVE MAIN FACE AND A SECOND EDGE PORTION EXTENDING INWARDLY FROM SAID FIRST EDGE PORTION IN A DIRECTION GENERALLY PARALLEL TO ITS CORRESPONDING MAIN FACE, THE PANEL THICKNESS PERPENDICULARLY TO SAID MAIN WALL FACES BEING GREATER THAN THE SUM OF THE THICKNESSES OF BOTH SAID SHELL SECTIONS SO THAT A GAP IS PROVIDED BETWEEN SAID TWO SHELL SECTIONS IN THE DIRECTION PERPENDICULAR TO SAID MAIN WALL FACES OF SAID PANEL ALONG ALL OF SAID FOUR EDGE FACES, SAID GAP PROVIDING A STRAIGHT THROUGHWAY FROM THE EXTERIOR INTO THE INTERIOR OF THE PANEL, SOUND AND HEAT INSULATING MEANS FILLING THE INTERIOR OF SAID PANEL, SAID GAP BEING BOUNDED BY THE RESPECTIVE SECOND EDGE PORTIONS OF THE LATERAL SIDE PORTIONS OF SAID SHELL SECTIONS, EACH OF SAID SECOND EDGE PORTIONS BEING SHAPED TO FORM A CHANNEL-LIKE MORTISE FACING AND IN ALIGNMENT WITH A LIKE MORTISE OF THE CONTIGUOUS SECOND EDGE PORTION OF THE OTHER SHELL SECTION, THE DEPTH OF EACH MORTISE BEING PERPENDICULAR TO SAID MAIN WALL FACES, A PREFORMED FLEXIBLE STRIP OF THERMAL INSULATING CHARACTER, SAID FLEXIBLE STRIP IN CROSS SECTION TRANSVERSE OF ITS LENGTH INCLUDING A MAJOR AND A MINOR DIMENSION, SAID MAJOR DIMENSION OF SAID STRIP EXTENDING PERPENDICULARLY TO SAID