Special receptacle or package – File for plural cards or sheets
Patent
1996-07-11
1998-06-30
Foster, Jimmy G.
Special receptacle or package
File for plural cards or sheets
220 8, 229 23BT, 312205, B65D 5355
Patent
active
057720290
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a document file, in particular for archiving purposes, which can be folded flat and has an adjustable volume.
Document files of various forms are already known from the state of the art, including those having a parallelepipedal shape with one side and one end which can be opened like a folder and which can contain loose documents or folders of documents.
These files of the known art, which are usually made of plastic or stout cardboard, basically have two main drawbacks: production or distribution or by the final user; consequently the need to have several stock items both in production and distribution, or at the customer's premises, resulting in increased costs and complex management of supplies, since it is impossible to predict which size of file will best suit customer requirements
CH 543 973 discloses a document file with an adjustable volume constituted of two rigid half shell elements that can be coupled together with a dove-tail arrangement in order to define the document collection space.
The structure shown in this document is not collapsible to a flat form obtaining a minimum storage space before or after the use.
EP-A-0 099 170 discloses a magazine holder constituted of a single sheet of plastic material that by folding flanges and coupling slots into locking interrelationship can be made to assume a tridimensional structure when erected for storing magazines and the like.
The structure provided by this document provides a fixed space for receiving magazines or documents that cannot be adjusted either before a during the use to adapt it to a variable quantity of magazines or documents to be contained.
SUMMARY OF THE INVENTION
The object of the present invention is to provide an improved structure of elements for the production of files of the type mentioned above which enables the drawbacks listed above to be overcome.
According to the present invention the document file, which has an adjustable volume and comprises a pair of containing elements forming an internal component and an external component with complementary engagement elements that can be coupled together is characterized in that it can be folded flat and comprises a pair of initially flat elements, separated from each other, designed to make up an internal component and an external component of the file; said elements having respective flaps which, once they have been folded at right angles, form a first internal half-shell and a second external half-shell, which can be inserted one inside the other to form a box-like containing structure which can be closed on itself; the flaps which are provided on at least three sides of the internal and external components, having complementary engagement elements positioned so as to adjust the connection of the flaps, for a stepped or similar manner, in order to define correspondingly adjustable volumes of the file in its assembled and ready-to-use state.
In order to be able to fold the file flat, so that it can be packed, stored and transported easily and conveniently, the flaps forming the side opposite the opening can be opened and include releaseable closure elements. Furthermore, the external half-shell is fitted with identification accessories.
Preferably, according to the present invention, the male and female half-shells are made from a thermoplastic material with oriented macromolecules, so as to be able to produce a set of integral hinges at the points where the two half-shells are folded during assembly of the file. However, cardboard provided with suitable crease lines corresponding to the lines of folding may also be used.
Again according to the present invention, the two half-shells are preferably provided with microperforations in order to enable air to circulate inside the file, thereby providing improved storage conditions for the papers contained therein.
Other objects and advantages of the present invention will become clear from the detailed description which follows which is given with reference to a prefer
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patent: 968633 (1910-08-01), Andrews
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patent: 2176284 (1939-10-01), Whiteford
patent: 3521810 (1970-07-01), Boyer
patent: 3926362 (1975-12-01), Beck et al.
patent: 4787488 (1988-11-01), Campanini
patent: 5016753 (1991-05-01), Henderson
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