Ring binder mechanism

Details Ring binder mechanism Ring binder mechanism

2009-07-14

2011-11-08

Ross, Dana (Department: 3725)

Binder device releasably engaging aperture or notch of sheet

Sheet retainer travels arcuate path

Travel in plane perpendicular to axis of rotation

C402S026000, C402S035000, C402S036000, C402S038000, C402S502000

Reexamination Certificate

active

08052343

ABSTRACT:
A ring mechanism for retaining loose-leaf pages including a housing, hinge plates, and ring members mounted on the hinge plates for retaining pages on the mechanism. An actuating lever is pivotally mounted on the housing for engaging the hinge plates and pivoting them to selectively move the ring members between an open position and a closed position. A travel bar is operatively connected to the lever for selective movement between a position in which locking elements of the travel bar block the pivoting movement of the hinge plates and a position in which the travel bar allows the hinge plates to pivot. The lever is configured to deform when pivoting the hinge plates to close the ring members to delay movement of the travel bar and locking elements to the blocking position from the onset of pivoting motion of the hinge plates.

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