Ring binder mechanism with reinforced hinge plates

Details Ring binder mechanism with reinforced hinge plates Ring binder mechanism with reinforced hinge plates

B - Operations, Transporting

42

F

B42F 13/16 (2006.01)

Patent

CA 2492773

A ring binder mechanism for retaining loose-leaf pages comprises an elongate housing that supports two hinge plates for loose pivoting motion. Ring members attach to the hinge plates and move with the pivoting motion of the hinge plates between a closed position and an open position. Levers are pivotally attached to longitudinal ends of the housing for pivoting the hinge plates to move the ring members. The hinge plates define an opening therein, generally adjacent to one of the levers, for receiving a fastener through the hinge plates to attach the mechanism to a cover. Reinforcing structure is provided around the opening for rigidifying the hinge plates in that area and for preventing the hinge plates from bending or deforming near the opening during operation.

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