Envelopes – wrappers – and paperboard boxes – Paperboard box
Patent
1991-11-15
1992-08-18
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
22912526, 229177, 229181, 493102, 493140, B65D 4306
Patent
active
051391945
ABSTRACT:
The present invention is addressed to an improved apparatus and method for making and using a self-locking container which may be non-destructively disengaged and thereafter re-interengaged. The invention features a polygonal container and an interlocking base and is well-suited where the container is also provided with an interlocking lid closing configuration. The base includes inwardly directed folded flanges which interengage with outwardly directed folded flanges provided on the lower edge of the container body. Therefore, when the container body section is nestingly mated with the base section, the oppositely-disposed flanges on each of the two respective container sections become lockingly engaged without the need for adhesives or other binding materials. If at any time, prior to shipment to the consumer, it becomes necessary to gain access to the contents of the locked container, either the locking ear tabs provided in the base section or the flange portion adjacent to the locking tabs may be severed, permitting disengagement of the interlocked container sections.
REFERENCES:
patent: 1130271 (1915-03-01), Hammond
patent: 1480358 (1924-01-01), Wirtz
patent: 2039315 (1936-05-01), Heineman
patent: 2370927 (1945-03-01), Anderson
patent: 2799440 (1957-07-01), Frederich et al.
patent: 3071045 (1963-01-01), Budd
patent: 3465944 (1969-09-01), Robinson
patent: 3634995 (1972-01-01), Curtis
patent: 4317536 (1982-03-01), Dickerson
American Corrugated Products, Inc.
Elkins Gary E.
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