Binder device releasably engaging aperture or notch of sheet – Sheet retainer travels arcuate path
Patent
1995-03-31
1997-09-16
Han, Frances
Binder device releasably engaging aperture or notch of sheet
Sheet retainer travels arcuate path
402 70, 402 73, B42F 1336
Patent
active
056673230
ABSTRACT:
A binder (12) for storing sheets (S) of paper having punched holes (H). First and second end leafs (16, 18) form outer covers of the binder. A center plate (20) is positioned intermediate the end leafs which are flexibly attached (at 16f, 18f) to the center plate to enclose sheets of paper between the end leafs. Binder rings (24, 26, 28) carrier on the center plate hold the sheets and are movable from a closed to an open position. Sheets are inserted into the binder by inserting the holes over an exposed end (24e, 26e, 28e) of the rings when the rings are opened. Locking mechanism (30) locks the rings closed. A mechanism (58) moves the rings from their closed to their open position. One end (24d, 26d, 28d) of the rings attach to a rotatable plate (60). The locking mechanism is located on one side of the center plate adjacent one of the end leafs, and the rotatable plate is located on the opposite side thereof adjacent the other end leaf. The plate pivotally moves in one direction with respect to the locking mechanism to open the rings and in the opposite direction to close them. Substantial quantities of paper are stored in the binder without the rings inadvertently opening became of the quantity of paper stored.
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Han Frances
U.S. Ring Binder Corp.
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