Envelopes – wrappers – and paperboard boxes – Paperboard box – With closure for an access opening
Patent
1986-07-10
1987-10-27
Marcus, Stephen
Envelopes, wrappers, and paperboard boxes
Paperboard box
With closure for an access opening
206815, 229 41R, 229143, 229149, 229169, 229174, 229DIG11, B65D 530
Patent
active
047024097
ABSTRACT:
A collapsible tray is formed from a single blank of cut and scored foldable material and comprises a generally rectangular bottom panel, side walls extending from opposite sides of the bottom panel and end walls extending from opposite ends of the bottom panel. Corner connecting flaps are provided at each end of the side walls and abbreviated top panels are foldably attached to the upper edges of the side walls. The top panels also include corner reinforcing flaps located at each respective end. The corner connecting flaps are adhered to the inner surfaces of the end walls at each corner and the corner reinforcing flaps are folded downward inside the tray to overlap the corner connecting flaps. The corner reinforcing flaps are retained in place when tabs included on the ends thereof are inserted in slots provided in the bottom panel and with the aid of additional locking tabs provided on the corner connecting flaps which are accessed by openings provided in the end walls.
REFERENCES:
patent: 1910480 (1933-05-01), Shoemaker
patent: 1916119 (1933-06-01), Schwartz et al.
patent: 2480587 (1949-08-01), Marshall et al.
patent: 2835431 (1958-05-01), Stone
patent: 2914236 (1959-11-01), Shapiro
patent: 3152748 (1964-10-01), Desmond et al.
patent: 3727827 (1973-04-01), Stice
patent: 4537344 (1985-08-01), Thomas
Elkins Gary E.
Marcus Stephen
Westvaco Corporation
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