Carton end closure

Claim 1

A MATERIAL-SAVING FLATTENED COLLAPSED TUBULAR CARTON HAVING OPPOSITE ENDS BOTH OF WHICH ARE OPEN AND UNRESTRICTED WHEN SAID CARTON IS IN THE FLATTENED COLLAPSED STATE, SAID CARTON BEING ADAPTED TO RETAIN A PRODUCT THEREIN WHEN THE SAME IS ERECTED FROM SAID FLATTENED COLLAPSED STATE AND THE OPPOSITE ENDS THEREOF ARE CLOSED; SAID CARTON COMPRISING A PAIR OF MAJOR BODY PANELS AND A PAIR OF MINOR BODY PANELS HINGEDLY CONNECTED TO DEFINE A GENERALLY RECTANGULAR CARTON BODY WHEN SAID CARTON IS ERECTED, SAID CARTON IN THE FLATTENED COLLAPSED STATE HAVING ONE MAJOR PANEL AND ONE MINOR PANEL ON AT BOTH OF SAID OPPOSITE ENDS OF SAID CARTON FOR CLOSING SAID ENDS WHEN SAID CARTON IS ERECTED, SAID CLOSURE MEANS EACH SIDE OF THE FLATTENED CARTON, AND END CLOSURE MEANS AT AT LEAST ONE OF SAID OPPOSITE CARTON ENDS BEING DESIGNED TO CONSERVE CARTON MATERIAL AT SUCH CARTON END, SAID COLLAPSED CARTON BEING ERECTABLE FROM SAID FLATTENED COLLAPSED STATE INTO AN OPEN ENDED TUBULAR CARTON AND SAID END CLOSURE MEANS THEREON BEING CLOSABLE ON HIGH SPEED AUTOMATIC MACHINERY; SAID CLOSURE MEANS AT SUCH ONE CARTON END COMPRISING A PAIR OF MINOR CLOSURE FLAPS HINGEDLY CONNECTED TO END MARGINS OF SAID MINOR BODY PANELS, AND A PAIR OF MAJOR CLOSURE FLAPS HINGEDLY CONNECTED TO END MARGINS OF SAID MAJOR BODY PANELS, SAID MAJOR AND MINOR CLOSURE FLAPS BEING OF A WIDTH NO GREATER THAN THE WIDTH OF THEIR ASSOCIATED BODY PANELS, EACH OF SAID MAJOR FLAPS BEING OF A LENGTH WHICH IS SUBSTANTIALLY LESS THAN THE WIDTH OF SAID MINOR BODY PANELS SO THAT SAID MAJOR FLAPS DO NOT EXTEND THE FULL DISTANCE ACROSS THE CARTON END WHEN FOLDED WHEREBY A SAVINGS IN CARTON MATERIAL IS EFFECTED, SAID MINOR CLOSURE FLAPS BEING OF A LENGTH NO GREATER THAN THE LONGER OF SAID MAJOR CLOSURE FLAPS, SAID MINOR FLAPS BEING FOLDABLE INWARDLY TOWARDS EACH OTHER IN A FIRST DIRECTION AND SAID MAJOR FLAPS BEING FOLDABLE INWARDLY OVER SAID MINOR FLAPS TOWARDS EACH OTHER IN A DIRECTION GENERALLY TRANSVERSE TO SAID FIRST DIRECTION WHEN SAID CARTON IS ERECTED TO CLOSE SUCH CARTON END, SAID MAJOR FLAPS TERMINATING SHORT OF THE MAJOR BODY PANELS OPPOSITE THERETO AND BEING INTERENGAGEABLE WHEN THUS FOLDED, ONE OF SAID MAJOR FLAPS HAVING A LOCKING SLIT THEREIN SPACED INWARDLY FROM AN OUTER MARGINAL EXTREMITY THEREOF, SAID ONE MAJOR FLAP OTHERWISE BEING GENERALLY IMPERFORATE, THE OTHER MAJOR FLAP HAVING A LOCKING TAB THEREON ADAPTED TO BE RECEIVED IN SAID SLIT, SAID OTHER MAJOR FLAP HAVING A CUT OUT PORTION ON EACH SIDE OF SAID TAB EXTENDING INTO SUCH FLAP FROM AN OUTER MARGINAL EXTREMITY THEREOF, SAID CUT OUT PORTIONS DEFINING A PAIR OF CAMMING SHOULDERS ON OPPOSITE SIDES OF SAID TAB WHICH ARE ENGAGEABLE WITH SAID ONE MAJOR FLAP WHEN SAID MAJOR FLAPS ARE FOLDED TOWARDS EACH OTHER TO PRECLUDE INTERFERENCE BETWEEN SUCH FLAPS AS SAID TAB IS BEING INSERTED INTO SAID SLIT, SAID CAMMING SHOULDERS DEFINING FLAP CORNER PORTIONS WHICH ARE FREE OF OTHER LOCKING TABS WHEREBY SAID SHOULDERS ARE FREE OF INTERLOCKED ENGAGEMENT WITH SAID ONE MAJOR FLAP WHEN SAID CARTON IS ERECTED AND SAID ONE END THEREOF IS CLOSED.