Special receptacle or package – With pallet feature – Specified pallet legs
Patent
1995-08-03
1997-09-16
Foster, Jimmy G.
Special receptacle or package
With pallet feature
Specified pallet legs
108 531, 108 533, 108 551, 206511, B65D 1902, B65D 21032
Patent
active
056670656
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a stackable packaging unit.
BACKGROUND OF THE RELATED ART
In known packaging units of this type, the pallets lying at the bottom end of the unit are pressboard moulded parts with a substantially uniform thickness over the plane of the pallet so that, on the upper side of the pallet, receptors are automatically obtained in the pallet feet into which the feet of another pallet may be introduced when the pallets are stacked after use for transportation back to the point of origin. The marginal wall arrangement is as a rule manufactured from corrugated cardboard and when seen in a top view has the shape of a rectangle. For transport back to the starting position after using the packaging unit, the marginal wall arrangement can be folded down flat. A lid placed on the marginal wall arrangement consists of a pressboard sheet. When stacking the packaging units the feet of another packaging unit are put down on this lid. The lids can likewise be stacked after use of the packaging units and be transported back to the point of origin.
SUMMARY OF THE INVENTION
The object of the present invention is to provide, a stackable packaging unit in which pallets, marginal wall arrangement and lid are still stackable while with a built-up packaging unit a positive positioning of a packaging unit on a packaging unit lying underneath it is obtained by simple means.
In a packaging unit according to the invention, a pallet is likewise used as a lid which has the same geometry as the pallet lower. In this manner the upper and lower end parts of the packaging unit may be stacked together indiscriminately and transported back to the point of origin. The storage and manufacturing costs for the elements of the packaging unit are reduced since, from the point of view of the marginal wall arrangement, only a single additional element is needed which on the one hand fulfils the function of the pallet and on the other hand the function of a positioning lid. Since the stackable pallets exhibit a high mechanical strength with low weight due to their design, a weight saving is obtained relative to previous lids which are simple sections of pressboard sheets.
With a further improvement of the invention secure positioning and fixing of the marginal wall arrangement is obtained at its lower and upper end, respectively.
With a further improvement of the invention a situation is reached that packaging units stacked on top of one another are separated by a distance such that the fork of a fork-lift truck may be rapidly moved between the feet of a packaging unit without the fork having to be aligned very precisely in a vertical direction. Despite this it can be guaranteed that, after dismantling the packaging unit, the pallets may be transported back tightly stacked for reuse.
According to a further improvement positions between successive pallets that are visually easily discernible and in which the feet of the upper pallet engage a variable distance into the foot receptors of the pallet lying below may be realised in a simple manner.
A still further improvement of the invention is advantageous in respect of simple recognition of the relative position of pallets lying on top of one another.
The invention is elucidated in more detail below by means of implementation examples with reference to the drawings. These show the following:
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1: a vertical section through a stack of packaging units;
FIG. 2: a vertical section through a pallet stack made up of pallets which had formed the upper and lower end parts of the packaging units shown in FIG. 1 and further such packaging units;
FIG. 3: a top view of the upper side of a pallet for a packaging unit according to FIG. 1 on an enlarged scale;
FIG. 4: a still further enlarged vertical section through the corner region of two of the units lying on top of one another in the stack shown in FIG. 1;
FIG. 5: a view similar to that of FIG. 3 in which a modified pallet is reproduced; and
FIG. 6: a top view of a further mod
REFERENCES:
patent: 4480748 (1984-11-01), Wind
patent: 4550830 (1985-11-01), Shuert
patent: 4580680 (1986-04-01), Wind
patent: 4989731 (1991-02-01), Shuert
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