Building panels and fastener means therefor

Claim 1

A LAMINATED BUILDING PANEL HAVING A CORE OF FOAM PLASTIC AND TWO FACIAL LAYERS, ONE ON EACH SIDE OF SAID CORE, LAMINATED THERETO, SAID CORE BEING EXPOSED AT THE EDGES OF SAID PANEL SO THAT THE RAW EDGE IS VISIBLE AND HAVING AN OPEN-FACED SLOT IN SUCH RAW EDGE WHICH IS SUBSTANTIALLY THIN WITH RESPECT TO THE THICKNESS OF SAID PANEL, AND PANEL FASTENER MEANS WITHIN SAID SLOT, SAID MEANS COMPRISING A THIN SHEET-LIKE WEB AND AT LEAST ONE ELEMENT OF THE LOCK SECURED THERETO, SAID WEB HAVING A THICKNESS SUBSTANTIALLY EQUAL TO SAID SLOT AND EXTENDING A SUBSTANTIAL DISTANCE BEYOND THE PERIPHERY OF SAID ELEMENT OF THE LOCK AND BEING EMBEDDED IN SAID SLOT AND FIXEDLY SECURED BY AN ADHESIVE ON EACH SIDE TO SAID CORE, AND A KEYHOLE FOR SAID LOCK ELEMENT EXTENDING TRANSVERSELY THROUGH SAID CORE TO SAID LOCK ELEMENT, A GROOVE ADJACENT SAID PANEL FASTENER MEANS AND A TONGUE WITHIN SAID GROOVE EXTENDING BEYOND THE EDGE OF SAID PANEL,L SAID CORE CAPABLE OF BEING FORMED WITH A SLOT AND A GROOVE AND SAID PANEL FASTENER MEANS AND SAID TONGUE CAPABLE OF BEING EMBEDDED IN SAID SLOT AND SAID GROOVE RESPECTIVELY EITHER IN THE FACTORY OR IN THE FIELD THEREBY PERMITTING PANELS TO BE CUT TO SIZE AND AFFIXED WITH PANEL FASTENER MEANS AT EITHER LOCATION.