System of identical modular containers which can be piled up...

Special receptacle or package – Structural features for vertical stacking – i.e. – similar...

Reexamination Certificate

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Details

C220S023600, C220S023830

Reexamination Certificate

active

06273258

ABSTRACT:

The present invention refers to a system of identical modular containers which can be piled up on top of one another, to be used particularly, but not exclusively, for the storage and transportation of foodstuffs.
In the sector of so-called “household goods”, plastic containers for foodstuffs are known which are used for the storage and transportation of foodstuffs of various kinds.
For instance, it is well known that it is necessary to place, in refrigerators or freezers or in some other cold environment, fresh and/or cooked food for the purpose of storing it ready for use within relatively short periods.
Plastic containers for foodstuffs are also used to transport the aforesaid food from one place to another, for example, when transferring from one house to another or during trips or excursions, etc.
In order to meet the needs mentioned above, containers that can be piled up one on top of another have already been proposed. However, these containers present the drawback of not having a positive-seal means of closing between one container and another, a fact which may give rise to the problems referred to in what follows.
First of all, the containers are piled up without there being a real seal-type means of closing, and this can lead to the contents coming out and an inadequate storage with loss of the flavour of the food, and also an undesirable contamination of the refrigerator.
In addition, picking up and transporting the pile of containers is not easy or safe, in that a careless or clumsy operation could easily cause sudden and unexpected separation of the piled containers, and the contents could consequently get spilt.
Finally, it is difficult to separate a single container from the rest of the pile at a time, for example the one on the top or the one on the bottom.
The general purpose of the present invention is to overcome the above-mentioned drawbacks of the known art by creating a system of identical modular containers that can be piled up on top of one another, in which a safety seal is provided between one container and another, picking-up and transporting of the entire pile can be carried out safely, and it is also possible to separate one or more of the containers at a time easily from the rest of the pile.
The above purpose is achieved by a system of containers as claimed in the main claim attached and in the subordinate claims.


REFERENCES:
patent: 3339725 (1967-09-01), Hamilton
patent: 3384259 (1968-05-01), Hoffstadt
patent: 3811559 (1974-05-01), Carter
patent: 4760921 (1988-08-01), Licari
patent: 5086926 (1992-02-01), Paige et al.
patent: 1062621 (1959-07-01), None
patent: 1145992 (1963-03-01), None
patent: 9414617 (1994-11-01), None

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