Ring Binder Mechanism
AssigneeWorld Wide Stationery Mfg. Co., Ltd.
InventorHung Cheng
Life of this patent
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Abstract
A ring binder mechanism for retaining loose leaf pages includes a frame having a first frame element and a second frame element. At least one ring has a first ring member mounted on the first frame element and a second ring member mounted on the second ring element. The first and second frame elements include ears projecting outward from the first and second frame elements. The ears receive a hinge pin to pivotally interconnect the first and second frame elements for pivoting motion relative to each other between closed and opened positions. A biasing member mounted on the hinge pin biases the first and second frame elements to the open position.
Claims19
A ring binder mechanism for retaining loose leaf pages, the mechanism comprising:
- a frame including a first frame element and a second frame element;
- at least one ring comprising a first ring member mounted on the first frame element and a second ring member mounted on the second ring element;
- a hinge pin interconnecting the first and second frame elements for pivoting motion relative to each other between a closed position wherein the ring members of the ring form a substantially continuous, closed loop for allowing loose-leaf pages retained by the ring to be moved along the ring from one ring member to the other, and an open position wherein the ring members of the ring form a discontinuous, open loop for adding or removing loose-leaf pages from the ring;
- and
- a biasing member mounted on the hinge pin for biasing the first and second frame elements to the open position.
A ring binder mechanism for retaining loose leaf pages, the mechanism comprising:
- a frame including a first frame element and a second frame element;
- at least one ring comprising a first ring member mounted on the first frame element and a second ring member mounted on the second ring element;
- a hinge pin interconnecting the first and second frame elements for pivoting motion relative to each other between a closed position wherein the ring members of the ring form a substantially continuous, closed loop for allowing loose-leaf pages retained by the ring to be moved along the ring from one ring member to the other, and an open position wherein the ring members of the ring form a discontinuous, open loop for adding or removing loose-leaf pages from the ring;
- the first and second frame elements including ears projecting outward from the first and second frame elements in the closed position, the ears receiving the hinge pin to pivotally interconnect the first and second frame elements.
Dependencies are inferred from the claim text.