Interlocking means for a plurality of panels

Claim 1

AN ARRANGEMENT FOR INTERLOCKING ADJACENT EDGES OF A PAIR OF YIEDABLE SUBSTANTIALLY COPLANAR PANELS, SAID ARRANGEMENT COMPRISING A PLURALITY OF L-SHAPED LOCKING HOOKS FORMED ALONG THE EDGE OF ONE OF SAID PANELS AND DISPOSED IN OUTWARDLY PROTRUDING EXPOSED RELATION, A GUIDE PANEL NORMALLY DISPOSED IN COPLANAR RELATION TO THE OTHER PANEL AND FOLDABLY JOINED TO THE OTHER OF SAID PANELS ALONG THE FOLD LINE GENERALLY PARALLEL TO THE EDGE OF SAID OTHER PANEL, A PLURALITY OF LOCKING SLOTS FORMED IN THE OTHER PANEL AND IN GENERAL COINCIDENCE WITH SAID FOLD LINE, EACH SLOT BEING ARRANGED TO RECEIVE ONE OF SAID HOOKS IN COORDINATION WITH RELATIVE MOVEMENT OF SAID PANELS IN A DIRECTION GENERALLY PARALLEL TO THE PLANES THEREOF AND GENERALLY NORMAL TO SAID FOLD LINE AND IN COORDINATION WITH FOLDING MOVEMENT OF SAID GUIDE PANEL ALONG SAID FOLD LINE AND OUT OF THE PLANE OF SAID OTHER PANEL, SAID HOOKS BEING GUIDED INTO THEIR RESPECTIVE SLOTS DUE TO ENGAGEMENT WITH SAID GUIDE PANEL AND BEING MOVABLE INTO LOCKING POSITIONS SUBSTANTIALLY SIMULTANEOUSLY WITHIN THEIR RESPECTIVE SLOTS IN COORDINATION WITH RELATIVE MOVEMENT OF SAID PANELS IN A DIRECTION GENERALLY PARALLEL TO SAID FOLD LINE AND TO THE PLANES OF SAID PANELS, A PLURALITY OF ABUTMENT EDGES FORMED IN SAID OTHER PANEL, AND A PLURALITY OF ABUTMENT EDGES FORMED IN SAID ONE PANEL AND POSITIONED TO ENGAGE THE RESPECTIVE ABUTMENT EDGES IN SAID OTHER PANEL UPON COMPLETION OF THE MOVEMENT OF SAID ONE PANEL INTO ITS LOCKING POSITION.