Envelopes – wrappers – and paperboard boxes – Paperboard box – Box includes two side walls which are not formed from the...
Reexamination Certificate
1999-08-02
2001-12-18
Garbe, Stephen P. (Department: 3727)
Envelopes, wrappers, and paperboard boxes
Paperboard box
Box includes two side walls which are not formed from the...
C229S067400, C220S690000, C206S425000
Reexamination Certificate
active
06330968
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a file folder, more particularly to a file folder which may be used to contain bundles of loose documents or periodicals and the like.
More particularly, it concerns a file folder which has an inwardly directed flap and connecting side pieces which keep the flap spaced at a distance from the sheet to which the flap is attached.
2. Description of the Related Art
With the known types of file folders, the connecting side pieces are glued to the edges of the flap and to the edges of the respective sheet to which the flap is attached.
These known embodiments have a number of drawbacks. For instance, the assembly must be done in the factory and the file folder occupies more space in its finished shape. This is disadvantageous for storage in the factory, as well as with the user, and for transport. Moreover, each desired thickness requires another file folder, which requires a stock composed of file folders of different thicknesses.
The quality of the connection between the connecting side pieces and the edges is difficult to control for the known embodiments because the connections are made using glue (adhesive). Quality control is only possible in a destructive way, whereby the file folder cannot be used anymore.
SUMMARY OF THE INVENTION
The present invention aims therefore at excluding the above-mentioned and other disadvantages of the known file folders. To this end, the file folder according to the invention comprises a front sheet and a rear sheet made of a rigid material which are connected to each other by a flexible back. At least one of the sheets has an inwardly directed flap. At its side edges, the flap is kept spaced by connecting side pieces at a distance from the sheet to which the flap is attached. The connecting side pieces are at least attached to the sheet and to the flap by mechanical connections.
In the most preferred embodiment, the mechanical connections comprise mortise and tenon joints. However, other connections, such as snap connections, are not excluded.
It is clear that the file folder according to the invention has the advantage that it may be assembled at the moment of its use. As a result, the volume of the file folders which must be maintained in inventory or storage is reduced considerably.
With one file folder which must be assembled, connecting side pieces of different thicknesses (widths) may be used. Therefore, only one type of file folder needs to be kept in inventory instead of two or three types, as was previously the case. The user himself may now determine which type of file folder he assembles. In other words, he himself may choose the desired folder thickness.
In a preferred embodiment, the mortise and tenon joints will not only be provided between the connecting side pieces and the sheet and the flap, but likewise between the connecting side pieces and the flexible link between the flap and the sheet.
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Bacon & Thomas PLLC
Garbe Stephen P.
Mai Tri
UniBind (Cyprus) Limited
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