Collapsible single-blank carton having a telescopic closure

Claim 1

A COLLAPSIBLE SINGLE-BLANK CARTON, COMPRISING: A FIRST ROW OF PANELS, THE INTERMEDEIATE PANELS THEREOF BEING INTEGRALLY INTERCONNECTED AT THEIR END EDGES TO ADJACENT PANELS ALONG SCORED FOLD LINES, A SECOND ROW OF PANELS, THE INTERMEDIATE PANELS OF SAID SECOND ROW BEING INTEGRALLY INTERCONNECTED AT THEIR END EDGES ALONG SCORED FOLD LINES, A THIRD ROW OF BOTTOM CLOSURE PANELS EACH INTEGRALLY CONNECTED ALONG ONE EDGE THEREOF TO A LOWER EDGE OF A CORRESPONDING PANEL OF SAID FIRST ROW OF PANELS AND FOLDABLE INWARDLY INTO PARTIAL OVERLAPPING BOTTOM CLOSING POSITIONS, SAID FIRST AND SECOND ROW OF PANELS BEING SUBSTANTIALLY PARALLEL AND HORIZONTALLY COEXTENSIVE, A FOURTH ROW OF PANELS INTERCONNECTING ADJACENT HORIZONTAL EDGES OF THE PANELS OF SAID FIRST AND SECOND ROWS ALONG SCORED FOLD LINES, SAID SECOND ROW OF PANELS BEING FOLDED DOWN OVER THE OUTSIDE OF SAID FOURTH ROW OF PANELS, THE FREE ENDS OF SAID FIRST ROW OF PANELS BEING INTERCONNECTED BY FLEXIBLE HINGE MEANS TO DEFINE CIRCUMFERENTIALLY CONTINUOUS SIDE SND END WALLS OF SAID CARTON, THE FREE ENDS OF SAID SECOND ROW OF PANELS BEING INTERCONNECTED BY FLEXIBLE HING MEANS TO DEFINE A CIRCUMFERENTIALLY CONTINUOUS RECTANGULAR BAND TELESCOPICALLY ENGAGEABLE OVER THE UPPER PORTIONS OF THE PANELS OF SAID FIRST ROW, THE PANELS OF SAID FOURTH ROW INTERCONNECTING THE CARTON ENDFORMING PANELS OF SAID FIRST AND SECOND ROWS BEING CENTRALLY HORIZONTALLY SCORED FOR INWARD DOUBLE FOLDING THEREOF BY TELESCOPIC DOWNWARD MOVEMENT OF SAID RECTANGULAR BAND, THE PANELS OF SAID FOURTH ROW INTERCONNECTING THE CARTON SIDE-FORMING PANELS OF SAID FIRST AND SECOND ROWS BEING HORIZONTALLY SCORED AT THEIR ENDS FOR DOUBLE FOLDING OF SAID ENDS INTO DEEP V-SHAPED NOTCHES CUT INTO THE ENDS OF SAID FIRST-MENTIONED DOUBLE-FOLDING PANELS, SAID PANELS OF SAID FOURTH ROW BEING SEPARATED BY VERTICAL SLOTS WHEREIN THE FOURTH ROW MAY BE INWARDLY OFFSET FROM THE FIRST ROW, THE LOWER MEDIAL PORTIONS OF SAID SECOND MENTIONED DOUBLE FOLDING PANELS HAVING ELONGATED FLAPS CUT THEREFROM TO PROVIDE INWARDLY EXTENDING CLOSURE PART PANELS RIGIDLY COPLANAR WITH THE UPPER PORTIONS OF SAID SECOND-MENTIONED DOUBLE-FOLDING PANELS.