US 4,362,266 AGranted

Non-glued tapered tray

AssigneeChampion International Corporation

InventorGeorge P. Webinger

Life of this patent

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Abstract

A glueless, tapered sidewall tray erected from a unitary blank of paperboard. The tray has a hexagonal base with trapezoidal upwardly and outwardly extending printed side panels hingedly connected to the base sides. Alternate first side panels have pairs of side flaps on opposite side edges with tabs on the upper edges of the side flaps remote from the connection of the flap to its associated first side panel. Inner flaps on second side panels are hingedly connected thereto at their tops and extend downwardly to a lower central slot which interrupts the hinged connections of the second side panels with the base sides. The inner flaps have tabs which lock in said lower central slots. The tabs on the upper edges of the side flaps of the first side panels are received in top central slots which interrupt the hinge line between the second side panels and their associated inner flaps to secure adjacent first and second side panels. A hexagonal lid and closure panels may be attached to the upper edges of the first side panels.

Claims5

Dependent claims

A tray formed from sheet stock, said tray comprising:

(a) a polygonal base having a plurality of side edges;
(b) a plurality of trapezoidal first side panels on said tray, said first side panels being foldably connected along the shorter of their parallel edges to respective side edges of said base, said first side panels all extending upwardly and outwardly from said side edges of said base to form a top of said tray which is the same polygonal shape as said base but larger in area than the area of said base;
(c) a plurality of second trapezoidal side panels foldably connected to the upper edge of each of alternate ones of said first side panels along the longer parallel edge of said first and second side panels, said second side panels being folded down adjacent said respective alternate ones of said first side panels to overlie the latter, each of said second side panels being provided with a projecting tab at the shorter of its parallel edges, with said projecting tabs being received in cooperating slots formed in the fold connections between said base and said alternate ones of said first side panels to retain said second side panels in said overlying positions;
(d) means forming a medial slot in the fold connections between said first and second side panels;
and
(e) pairs of side flaps foldably connected one to each side edge of intermediate ones of said first side panels, the latter of which are disposed intermediate said alternate ones of said first side panels;
each of said side flaps being sandwiched between the adjacent pair of said alternate ones of said first side panels and said second side panels, and each of said side flaps including a locking tab on its upper edge with said locking tabs engaging said medial slots to retain all of said side panels in their upwardly and outwardly extending positions.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/239,311Filed 2 Mar 1981
Granted: 7 Dec 1982
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B65D 5/22
By folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form: held erect by extensions of…
B65D 5/2033
The central panel having a non rectangular shape: polygonal having more than four sides, e.g. hexagonal, octogonal
B65D 5/2047
At least two opposed folded-up portions having a non-rectangular shape: trapezoidal, e.g. to form a body with diverging side walls
B65D 5/6658
Local flaps or tabs provided at the lid edge opposite to the hinge: combined with flaps or tabs provided at the side edges of the lid