Carton with self-locking end closure and blank for forming same

Details Carton with self-locking end closure and blank for forming same Carton with self-locking end closure and blank for forming same

1980-05-23

1981-07-21

Moorhead, Davis T.

Envelopes, wrappers, and paperboard boxes

Wrapper

Bottle

229 41B, B65D 510

Patent

active

042793793

ABSTRACT:
A self-locking, reusable carton is formed from a unitary blank of paperboard. The carton and blank have self-locking end closure flaps which are hingedly coupled to adjacent end edges of the side panels of the carton. The closure flaps include two flaps with L-shaped slits formed therein and a locking flap free of fold lines with a locking tab at the free end thereof. During assembly the locking flap is forced downwardly to place the locking tab in the L-shaped slits to lock the carton in its fully assembled configuration.

REFERENCES:
patent: 1546601 (1925-07-01), Morris
patent: 2337198 (1943-12-01), Holy
patent: 2361603 (1944-10-01), Cohen et al.
patent: 2713965 (1955-07-01), Acker
patent: 2779527 (1957-01-01), Fallert
patent: 2934254 (1960-04-01), Ullger
patent: 3178096 (1965-04-01), Reeves et al.
patent: 3302853 (1967-02-01), Locke
patent: 3819105 (1974-06-01), Heimann

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