Books – strips – and leaves – Book – element thereof – or accessory therefor
Patent
1990-02-15
1991-07-30
Bell, Paul A.
Books, strips, and leaves
Book, element thereof, or accessory therefor
281 21001, 412900, 412901, B42D 100, B42D 1500
Patent
active
050354477
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a binding element for binding loose sheets in files, so that files may be created in any material and in any position.
The present invention relates to a binding element provided with a layer of glue meltable under the influence of heat. The purpose of the glue is to attach an amount of sheets or documents to the binding element and, to secure the binding element with the bound documents in a suitable file.
2. Brief Description of the Prior Art
Files with a supple spine and with a layer of glue meltable under the influence of heat are already known, for example, files of the type described in the Belgian patent no. 869.886.
Since such files principally consist of an aforementioned spine, a front sheet and a back sheet, the utilisation of these files always remains limited to the use of the same cover.
A binding element which allows a bundle of documents to be bound and at the same time provides a simple attachment of such binding element in any cover is also already known.
Such an element is, for example, described in the Belgian patent no. 87 01 029.
This element consists of a small strip of material which may be stuck in any file and which is provided with a so-called layer of thermal glue. In one particular embodiment, this binding element consists of a small strip of material whose sides are extended by end papers.
In the first case, the binding element can only be installed with difficulty installed in the right place because of its small dimensions. In the second case, the binding element is relatively expensive due to the presence of a so-called front and back sheet, which are sheathed by the actual cover.
OBJECTS AND SUMMARY OF THE PRESENT INVENTION
The present invention has a binding element which not only allows a bundle of documents or similar materials to be bound, but which also allows the simple attachment of any cover around the bundle.
This feature permits the user of such binding elements a wide choice of cover when using the binding element. The element placed loose in such a cover together with the documents to be bound. After placement together binding is achieved by heating a layer of glue provided on the binding element cover may be formed of any material.
Such binding element is extremely simple. It also cheap and allows the binding to be implemented in a simple and effective manner.
This binding element of the invention principally comprises a relatively stiff sheet of any material, and the dimensions of which preferably correspond with those of the documents to be bound. This sheet is provided with a projecting part on one edge, specifically the edge which lies against the spine of the cover, and is formed by a layer of glue meltable under the influence of heat.
Depending on the material from which the sheet of the binding element is made the layer of glue will be either directly attached to the aforementioned sheet, or attached by means of a double sided adhesive strip.
BRIEF DESCRIPTION OF THE DRAWINGS
In order to better show the characteristics of the invention, two preferred embodiments are shown hereafter, as examples and without any restrictive character and with reference to the enclosed drawings, in which:
FIG. 1 shows a dismantled perspective view of a binding element according to the invention;
FIG. 2 shows a schematic cross-section of a binding element according to FIG. 1;
FIG. 3 shows on a larger scale the part indicated by F3 in FIG. 2;
FIG. 4 is a view similar to that from FIG. 1 but for an embodiment variant;
FIG. 5 shows a cross-section of a binding element according to FIG. 4;
FIG. 6 shows on a larger scale the part indicated by F6 in FIG. 5;
FIG. 7 shows a dismantled perspective view of a binding whereby use is made of a binding element according to FIG. 1;
FIG. 8 shows a cross-section of a binding element according to FIG. 7;
FIG. 9 shows on a larger scale the part indicated by F9 in FIG. 8;
FIG. 10 is a view similar to that from FIG. 9, but after the binding has been effected.
REFERENCES:
patent: 3833244 (1974-09-01), Heimann
patent: 4441950 (1984-04-01), Lolli
patent: 4793758 (1988-12-01), Hanson et al.
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