Ring binder mechanism
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United States of America Patent
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Apr 9, 2013
Grant Date -
Apr 14, 2011
app pub date -
Dec 20, 2010
filing date -
Nov 30, 2001
priority date (Note) -
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Abstract
A ring binder mechanism includes an elongate plate having a longitudinal axis. Hinge plates are supported by the plate for pivoting relative to the elongate plate. Ring members are mounted on the hinge plates and moveable between a closed position and an open position. A control structure is supported by the elongate plate and controllably pivots the hinge plates to move the ring members between the closed and open positions. The control structure has a travel bar connected to the hinge plates for moving the hinge plates between the closed and open positions. A spring biases the travel bar toward the closed position.
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