Self-locking container

Details Self-locking container Self-locking container

1990-11-02

1991-09-10

Marcus, Stephen

Envelopes, wrappers, and paperboard boxes

Paperboard box

With closure for an access opening

229156, 229185, B65D 510

Patent

active

050466623

ABSTRACT:
A carton includes a tubular body with a pair of opposed sidewalls and a pair of opposed endwalls. A closure extending from the sidewalls and endwalls includes end panels and side panels joined to the endwalls and sidewalls with hinge lines. The end panels have a discontinuous free edge which extends across a pair of free corners. A recessed edge is located between the free corners and defines a pair of U-shaped locking edge portions on either side of a generally arcuate intermediate portion. A pair of locking recesses are formed in each side panel, each recess including an arcuate edge portion spanning a generally truncated V-shaped edge portion. The recessed edge of the end panels engages the locking recesses of the side panels to lock the carton closure.

REFERENCES:
patent: 3067924 (1962-12-01), Baker et al.
patent: 3539090 (1970-11-01), Blasdell
patent: 4392607 (1983-07-01), Perkins, Jr.
patent: 4702408 (1987-10-01), Powlenko
patent: 4706879 (1987-11-01), Cargile, Jr.
patent: 4821949 (1989-04-01), Booth

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