Collapsible box with improved corner locks

Details Collapsible box with improved corner locks Collapsible box with improved corner locks

1990-09-19

1991-05-21

Elkins, Gary E.

Envelopes, wrappers, and paperboard boxes

Paperboard box

A sidewall includes a folded lateral extension of an...

229195, B65D 530

Patent

active

050168142

ABSTRACT:
A collapsible box is formed from a cardboard blank. The box has a bottom panel, a pair of parallel side panels and a pair of parallel end panels. Each end panel has a pair of wing panels formed with slots for interlocking engagement with corner tongue portions of the side panels.

REFERENCES:
patent: 363143 (1887-05-01), Huston
patent: 1383714 (1921-07-01), Freund
patent: 2147676 (1939-02-01), Shoemaker
patent: 2394850 (1946-02-01), Evans
patent: 2404916 (1946-07-01), Meller
patent: 2476253 (1949-07-01), Van Rosen
patent: 3093291 (1963-06-01), Brandle
patent: 3682369 (1972-08-01), Isakson

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