Device for opening a binding element
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United States of America Patent
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-
Dec 14, 1999
Grant Date -
N/A
app pub date -
Aug 1, 1997
filing date -
Aug 9, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention is directed to a device for opening a binding element for receiving perforated sheets, the binding element comprising a spine and a plurality of relatively spaced ring elements arranged side by side, with the free ends of the ring elements resiliently engaging the binder spine when closed. A low-cost device for opening a binding element is provided. The device includes a front section, a rear section having at least the same length as the binding element and being dimensioned such that, when the device is inserted into the binding element, the ring elements successively come into contact with the outer areas of the rear section, and that the free ends of the ring elements are spaced at least up to a specified distance from the spine, and a curved surface area provided at least in the rear section and being partly engaged by the inner surfaces of the ring elements.
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