Heavy duty container with integral handle

Claim 1

A REINFORCED SHIPPING CONTAINER FORMED FROM A UNITARY BLANK OF FOLDABLE PAPERBOARD, COMPRISING: (A) A TRAY HAVING A BOTTOM WALL WITH OPPOSED PAIRS OF FRONT AND REAR SIDE WALLS AND END WALLS UPSTANDING THEREFROM TO FORM A BOX-LIKE STRUCTURE OPEN AT THE TOP; (B) SAID TRAY END WALLS EACH INCLUDING: (I) A PAIR OF PARALLEL, INNER AND OUTER PANELS SPACED FROM EACH OTHER AND INTERCONNECTED AT THEIR UPPER EDGES BY A RELATIVELY NARROW, ELONGATED TOP PANEL HINGED AT ITS SIDE EDGES TO THE UPPER EDGES OF SAID INNER AND OUTER PANELS; SAID OUTER PANEL BEING HIGNED AT ITS LOWER EDGE TO AN ADJACENT END EDGE OF SAID BOTTOM WALL, AND SAID INNER PANEL HAVING INTERLOCKING ENGAGEMENT WITH SAID BOTTOM WALL; (II) SAID OUTER PANEL HAVING A MEDIAL PORTION CUT THEREFROM TO FORM A PAIR OF STRIPS WHICH ARE FOLDED TO FORM A PAIR OF STRIPS WHICH ARE THE INNER PANEL AND THE UPPER SURFACE OF THE BOTTOM WALL TO PROVIDE A CENTRAL RECESS IN THE OUTSIDE OF THE END WALL AFFORDING HANDLE MEANS FOR GRASPING AND LIFTING THE CONTAINER UNDER A MEDIAL PORTON OF SAID TOP PANEL; (III) A PAIR OF CORNER POSTS POSITIONED IN THE END WALL ON OPPOSITE SIDES OF SAID CENTRAL RECESS TO PROVIDE ADDITIONAL RADIGITY AND STACKING STRENGTH FOR THE CONTAINER; SAID CORNER POSTS BEING INTEGRALLY FORMED FROM EXTENSIONS HINGED TO THE END EDGES OF THE TRAY SIDE WALLS WHICH HAVE BEEN FOLDED TO PRESENT MULTI-SIDED COLUMNS; (C) A COVER FORMED INTEGRALLY WITH THE TRAY FOR CLOSING SAID STRUCTURE; INCLUDING: (I) A TOP WALL HINGED AT ITS REAR EDGE TO THE UPPER EDGE OF THE TRAY REAR SIDE WALL; (II) A FRONT PANEL HINGED TO AND DEPENDING FROM THE FORWARD EDGE OF THE TOP WALL AND DISPOSED TO OVERLIE THE TRAY FRONT SIDE WALL WHEN THE COVER IS IN CLOSED POSITION; (III) A PAIR OF LOCKING FLAPS HINGED TO THE END EDGES OF THE COVER FRONT PANEL AND INSERTABLE INTO OPENINGS IN THE FRONT OF THE END WALLS OF THE TRAY FOR LOCKING THE COVER IN CLOSED POSITION.