Expandable bottom folded blank carton

Claim 1

AN EXPANDABLE BOTTOM CARTON COMPRISING A PLURALITY OF EDGE-JOINED WALL PANELS DISPOSED IN A ROW AND JOINED TO DEFINE CIRCUMFERENTIALLY CONTINUOUS FRONT, REAR AND END WALLS OF SAID CARTON, A FIRST CLOSURE PANEL HINGEDLY CONNECTED MARGINALLY TO ONE OF SAID WALL PANELS, A SECOND CLOSURE PANEL HINGEDLY CONNECTED MARGINALLY TO THE OPPOSITE WALL PANEL, ONE OF SAID FIRST AND SECOND CLOSURE PANELS HAVING A NARROW TAB ALONG ITS FREE EDGE AND THE OTHER CLOSURE PANEL HAVING A TAB-RECEIVING SHALLOW NOTCH IN ITS FREE EDGE, A PAIR OF SIMILARLY SHAPED CLOSURE PANELS EACH ONE THEREOF BEING HINGEDLY CONNECTED MARGINALLY TO ONE OF THE REMAINING TWO OF SAID WALL PANELS AND BEING DEEPLY NOTCHED IN ONE SIDE THEREOF TO DEFINE A POINTED TAB AT THE FREE EDGE OF EACH OF SAID SIMILARLY SHAPED CLOSURE PANELS, AND RELATIVELY NARROW HINGE STRIPS CONNECTING THE MARGINS OF SAID WALL PANELS TO THE ADJACENT EDGES OF SAID CLOSURE PANELS AND OTHERWISE UNATTACHED THERETO, THE DIMENSIONS OF SAID CLOSURE PANELS AND THE LOCATIONS OF THEIR NOTCHES AND TABS BEING SUCH THAT WHEN SAID TABS AND NOTCHES ARE INTERENGAGED AS SAID CLOSURE PANELS ARE SUBSTANTIALLY COPLANARLY INTERLEAVED CENTRALLY OF THE EXPANDED CLOSURE FORMED THEREBY THE MARGINS OF SAID CLOSURE ARE AUTOMATICALLY EXPANDED PERIPHERALLY BEYOND THE WALLS OF SAID CARTON BY DISTANCES APPROXIMATING THE WIDTH OF SAID HINGE STRIPS TO PROVIDE A WIDER BASE FOR SECURE STACKING OF SAID CARTON ON THE UPPER RIM OF A SIMILAR CARTON.