Locked wall panel joint with fastener

Claim 1

A LOCKED WALL SHEET PANEL JOINT AND FASTENER COMBINATION FOR MOUNTING PANEL STRIPS IN SUCCESSIVE JOINED RELATION ONTO A WALL SUPPORT, COMPRISING A PAIR OF WALL SHEET PANEL STRIPS EACH HAVING A TERMINAL ELONGATED EDGE FORMATION, ONE OF SAID EDGE FORMATIONS BEING SEATED WITHIN THE OTHER OF SAID FORMATIONS AND LOCKING THE STRIPS TOGETHER WITH THEIR ADJOINING OUTER FACES SUBSTANTIALLY COPLANAR, THE OTHER OF SAID EDGE FORMATIONS BEING A SUBSTANTIALLY TRIANGULAR GROOVE EXTENDING INWARDLY FROM SAID OUTER FACES, THE INSIDE AND OUTSIDE WALLS OF SAID TRIANGULAR GROOVE DIVERGING FROM AN OPEN APEX IN THE PLANE OF SAID OUTER FACES TOWARDS THE BASE OF SAID TRIANGLE, AND EXTENDING FURTHER APART NEAR BOTH ENDS OF THE BASE TO DEFINE HOLLOW LOBES ADJOINED THERETO, SAID BASE BEING SUBSTANTIALLY PARALLEL TO SAID OUTER FACES AND BEING ANCHORED TO SAID WALL SUPPORT, ONE OF SAID LOBES DEFINING AN INWARDLY DIRECTED SHOULDER WITHIN SAID GROOVE AND PART OF THE INSIDE SIDE WALL CONNECTING THE BASE TO ITS RESPECTIVE STRIP, THE OTHER OF SAID LOBES DEFINING AN EXTERIOR OUTWARDLY DIRECTED SHOULDER ON THE OUTSIDE SIDE WALL WHICH HAS A FREE TERMINAL END AT SAID OPEN APEX, SAID ONE OF SAID EDGE FORMATIONS BEING AN ANGULAR TONGUE EXTENDING INWARDLY FROM THE OUTER FACE OF ITS RESPECTIVE STRIP THROUGH SAID OPEN APEX AND HAVING A REVERSELY TURNED LIP AT THE END OF SAID TONGUE RESILIENTLY PRESSING AGAINST SAID INWARDLY DIRECTED SHOULDER ON THE INSIDE SIDE WALL OF SAID TRIANGULAR EDGE FORMATION, FORMING A LINE-CONTACT PRESSURE SEAL IN SAID JOINT AND LOCKING SAID STRIPS TOGETHER, THE FREE END OF SAID OUTSIDE WALL OF THE TRIANGLE BEING BIASED AGAINST THE INNER FACE OF THE BASE OF SAID TONGUE, AND FASTENER MEANS FIXED TO SAID WALL SUPPORT HAVING HEAD PORTIONS EXTENDING OVE THE OUTWARDLY DIRECTED SHOULDER OF SAID OTHER LOBE TO ANCHOR SAID JOINT AGAINST SAID WALL SUPPORT.