Binder device releasably engaging aperture or notch of sheet – Depository
Patent
1996-06-04
1997-12-02
Howell, Daniel W.
Binder device releasably engaging aperture or notch of sheet
Depository
402 70, 402 77, 281 29, 281 35, 281 37, B42F 700, B42F 1330, B42F 2106
Patent
active
056928491
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE ART
This invention relates generally to file folders and, more particularly, to file folders used in an office or the like.
BACKGROUND ART
Various types of file folders are conventionally known. These prior-art folders are generally made of flat and rigid sheet material such as cardboard and synthetic plastics, and include a pair of front and rear covers which are integrally connected with a back cover via fold lines or hinge sections. A binding fastener is fixedly attached to the inner face of the back cover as by bonding, welding or riveting.
A typical prior-art file folder includes a pair of front and rear covers having a longitudinal length longer than the lateral width and is designed to bind or secure a plurality of loose papers along their longer edges by a binding fastener. This type of paper binding will hereinafter be referred to as the "S-binding". In the conventional practice, the file folder with S-bound papers is usually kept or otherwise stored upright on a bookshelf or in a cabinet with the back cover to which the fastener is fixed standing upright in a vertical direction. This manner of storing will hereinafter be referred to as the "S-type storage".
Meanwhile, it is of late attempted for the purpose of efficient use of a limited space to place such file folders on a support shelf in such a position that the back cover is kept above and extends horizontally, with the loose papers that are S-bound within the file folder being suspended vertically from its binding fastener. This manner of storing will hereinafter be referred to as the "E-type storage".
However, when the S-binding file folder is kept in the E-type storage mode on a long time basis, the file folder is likely to fall down because of the weight of the papers which has been applied to the file folder to deform it into parallelogram. For a solution to this problem it is conceived that a wall section is formed around the cover of the file folder to make the file folder into a box shape when closed, which improves the stiffness of the file folder. However, if the file folder is made in the shape of a box, the wall section formed around the cover of the file folder poses an obstacle for a finger to access papers when the filing folder is opened for turning over a page of papers.
SUMMARY OF THE INVENTION
It is an object of the invention to provide a new and improved file folder free from these and other problems inherent in the prior-art file folders.
In order to realize this object, a new arrangement is provided for the file folder. The file folder in accordance with the invention comprises a pair of foldable covers, a back cover integrally connected to the foldable covers, and a binding fastener fixedly provided at the inner face of the back cover or the inner face of the foldable covers near the back cover, and is characterized in that a top wall section and a tip wall section which make detachable engagement with the other foldable cover are provided along the top edge and the tip edge of one of the foldable covers.
In accordance with the arrangement, since along the top edge and the tip edge of one of the foldable covers provided are the top wall section and the tip wall section which detachably engage with the another foldable cover, the file folder comes into the shape of a box when the file folder is closed because the top and tip wall sections formed on one foldable cover engage with the another foldable cover. As a result of this, the file folder becomes stiffer, which in turn resists against the force which deforms the file folder into parallelogram. The file folder will never be deformed even though kept in E-type storage mode on a long time basis. Moreover, since one of the foldable covers is provided with no wall section at the bottom edge thereof, the papers bound inside the file folder are accessible through the bottom portion thereof in turning over the papers when the file folder is opened for use.
The file folder in accordance with the invention may be the one which comprises a pair of foldable c
REFERENCES:
patent: 813150 (1906-02-01), Hiscock
patent: 845390 (1907-02-01), Baugman et al.
patent: 2549306 (1951-04-01), Greene
patent: 3891070 (1975-06-01), Montanari
patent: 4011940 (1977-03-01), Neal et al.
patent: 4219951 (1980-09-01), Schmidt
patent: 4222190 (1980-09-01), Solomon
patent: 4294558 (1981-10-01), Errichiello
patent: 4466638 (1984-08-01), Miskin
patent: 4588321 (1986-05-01), Egly
patent: 4856817 (1989-08-01), Moor
patent: 4997207 (1991-03-01), Feldman
patent: 5190127 (1993-03-01), Cummings
patent: 5209593 (1993-05-01), Ros
patent: 5213433 (1993-05-01), An
patent: 5267804 (1993-12-01), Baumgarten
Howell Daniel W.
Kokuyo Co. Ltd.
Krolikowski Julie A.
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