Binder device releasably engaging aperture or notch of sheet – Pliant – deformable sheet retainer
Patent
1991-02-07
1992-12-01
Eley, Timothy V.
Binder device releasably engaging aperture or notch of sheet
Pliant, deformable sheet retainer
402 13, 402 19, 402 73, B42F 300
Patent
active
051674637
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a ring binder.
BACKGROUND ART
In U.S. Pat. No. 4,192,620, there is described a ring binder comprising a sheet of material arranged to be bent so as to form a front panel and a rear panel joined by a spine and three binder strips. Each binder strip extends from the rear panel at a position adjacent the spine and is provided with a head at its free end. Each binder strip is associated with an aperture formed in the spine. When binding sheet articles, the head of each binder strip is passed through its associated aperture and secured in position. This binder suffers from the disadvantage that, as the front and rear panels are opened and closed, the position from which each binder strip extends from the rear panel and the associated aperture move relative to each other thereby creating stresses at the anchor point between the strip and the rear panel.
DISCLOSURE OF THE INVENTION
It is an object of this invention to provide a new or improved binder in which the above mentioned disadvantage is overcome or reduced.
According to one aspect of this invention, there is provided a binder comprising a sheet of material arranged to be bent so as to form a front panel and a rear panel, at least one binder strip, the or each binder strip extending from said sheet at a respective first position, an individual head provided at the free end of the or each strip, means for permitting the or each head to be passed from one surface of the sheet to another surface of the sheet at a respective second position, and means for securing the or each head in position after it has been passed from said one surface to said other surface, said respective first position and said respective second position associated with the or each strip lying in a common plane when the front or rear panels are closed together.
In the binder of this invention, the stresses which are described above in relation to the said U.S. Pat. No. 4,192,620 are avoided.
At least one strip may be arranged for binding a device, for example a pen, to a surface of the binder. For the or each strip which is so arranged, the strip and its associated head may be cut from said material and the respective first position may be located adjacent the edge of the sheet, whereby the permitting means is provided by said edge of the sheet and the securing means is provided by the aperture which is formed by cutting the strip and head from the material.
At least two of said strips may be arranged for binding sheet articles, for example paper, to the binder. Conveniently, said sheet of material is arranged to be bent so as to form a central spine between the front and rear panels and, for each strip which is arranged for binding sheet articles, the respective first and second positions are located on the spine, and the permitting means comprises an aperture formed in the spine at said second position. Desirably, for each strip which is so arranged, the head and the aperture are configured so that the head can pass through the aperture without deformation. For each strip which is so arranged, the strip and its associated head may be cut from said material, whereby the securing means is provided by the aperture which is formed by cutting the strip and head from the material.
In the binder described in the said U.S. Pat. No. 4,192,620, the head of each binder strip has to be deformed as it passes through its associated aperture. Consequently, this binder suffers from the further disadvantage that it has to be formed from a sheet of highly flexible material.
It is another object of this invention to provide a new or improved binder in which this further disadvantage is overcome or reduced.
According to another aspect of this invention, there is provided a binder comprising a sheet of material arranged to be bent so as to form a front panel and a rear panel, at least two strips extending from said sheet, an individual head provided at the free end of each strip, each binder strip and its associated head being cut from said material and ther
REFERENCES:
patent: 4174909 (1979-11-01), Jahn
patent: 4192620 (1980-03-01), Jahn
patent: 4256411 (1981-03-01), Podosek
patent: 4261664 (1981-04-01), Crawford
Eley Timothy V.
Fridie Willmon
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