Envelopes – wrappers – and paperboard boxes – Paperboard box
Patent
1990-08-24
1991-05-21
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
229915, B65D 544
Patent
active
050168118
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The subject invention concerns a member designed to form an end wall in boxes made from cardboard, corrugated paperboard and the like.
Boxes made from these materials are used to transport and store a large variety of different goods. However, both during the transport and the storage of goods in cardboard or corrugated paperboard boxes it is important that the latter are stackable. To allow the boxes to be stacked on top of each other, at least two opposite sides of the box are reinforced. The reinforcement may be achieved for instance by forming the box with double walls or by providing it with separate flaps which are arranged to be folded inwards or downwards in a predetermined manner. In a separate operation the flaps may be stapled or glued to the box side walls to serve as reinforcement means and/or as stacking ribs.
Boxes made of any one of these materials and designed as indicated, are more expensive to manufacture than plain boxes, the sole purpose of which is to serve as a package. The added expense is felt all the more when the box, thus reinforced, nevertheless is used only for one-way transports and therefore, in effect, serves as a disposable package.
SUMMARY OF THE INVENTION
The purpose of the subject invention is to provide a solution to this problem. More precisely, the invention concerns an end wall member which is intended for use together with boxes of cardboard, corrugated paperboard, et cetera of the kind which, from a knocked-down position, are formed by erecting four side walls vertically relatively to a floor section and by folding flaps flat against the external faces of two opposite ones of said four box side walls. The end wall member is characterized therein that it comprises two plane-parallel walls which are separated by a gap, and a transverse wall forming the bottom of the gap, and in that the end wall member is arranged to be connected to one of those box side walls that are provided with the flaps by inserting said flaps into the gap sufficiently far to ensure that the flaps engage said transverse wall.
Thanks to this end wall member a box is obtained which is very light and easy to lift and stack and which is cheap because the end wall member may be removed from the box proper, the latter being of a very simple design and structure, and the end wall member may be used again with a fresh box when the first one is discarded.
BRIEF DESCRIPTION OF THE DRAWINGS.
The invention will be described in closer detail in the following with reference to the accompanying drawings, wherein
FIG. 1 is a perspective view of the end wall member in accordance with a first embodiment thereof,
FIG. 2 is a similar view of the end wall member in accordance with another embodiment,
FIG. 3 is a perspective view of a box blank in accordance with a conventional design,
FIG. 4 illustrates the box blank, when the erection thereof to form the box has been almost completed,
FIG. 5 is a perspective view of the box having been erected from the blank shown in FIG. 3 and illustrating the mounting of the end wall members in accordance with the invention in position on two opposite box walls,
FIG. 6 is a perspective view of a finished box, fitted with the end wall members in accordance with the invention, and
FIGS. 7 and 8 are perspective views of two different ways of making the boxes stackable.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
The end wall member 1a, 1b in accordance with the invention consists of two plane-parallel walls 2, 3 which are separated by a gap 4. A transverse wall portion 5 extending between the walls 2 and 3 in the interior of the gap 4, forms the bottom of the gap 4. The wall 3 has a peripheral reinforcement ledge which forms an upper edge face 6 serving as a stacking edge or rail and also as a gripping face, allowing the box to be lifted with ease. The end wall members 1a, 1b in accordance with the embodiments illustrated in the drawings also are formed at their top edge with a lug 7 and at their lower edge with a notch 8 of matching configu
REFERENCES:
patent: 3373921 (1968-03-01), Crane
patent: 3409202 (1968-11-01), Belcher
patent: 3417909 (1968-12-01), Stern
patent: 3915372 (1975-10-01), Crane
patent: 3935991 (1976-02-01), Crane
patent: 4068794 (1978-01-01), Lawrence
patent: 4482074 (1984-11-01), Lalley
patent: 4807756 (1989-02-01), Young et al.
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