Binder device releasably engaging aperture or notch of sheet – Pliant – deformable sheet retainer – Flaccid retainer secured by knotted – intertwined or wedge...
Patent
1996-07-26
1998-10-27
Han, Frances
Binder device releasably engaging aperture or notch of sheet
Pliant, deformable sheet retainer
Flaccid retainer secured by knotted, intertwined or wedge...
281 151, 402 19, 402 22, 402 68, 402 80P, B42F 300, B42F 1310
Patent
active
058270035
ABSTRACT:
A ring binder having an upper and a lower cover blank joined by a flexible rear blank. The binder has at least two aligning tongues extending from the lower cover blank to the upper cover blank for retaining perforated paper. Each aligning tongue is formed as a leaf spring and has a root section, a center section and a tip section, wherein the sides of the center section being narrower than the root. The binder has U-shaped brackets on the upper cover blank for receiving the aligning tongues. A tie section of U-shaped cross section is attached substantially perpendicular to the root section. The tie section has legs having flanges extending outwardly from the free end of the legs. The aligning tongues are configured to be integral with one of the flanges via a reduced cross section in the lower portion of the aligning tongues.
REFERENCES:
patent: 4784507 (1988-11-01), Vetter
Han Frances
Off Data GmbH
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