Ring Binder Mechanism
AssigneeWorld Wide Stationery Mfg. Co., Ltd.
InventorsHung Yu Cheng, Ho Ping Cheng
Life of this patent
Estimating the term…
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.
Claims30
A ring binder mechanism, the mechanism comprising:
- an elongate plate having a longitudinal axis;
- hinge plates supported by said plate for pivoting motion relative to the elongate plate;
- rings including ring members moveable by the hinge plates between a closed position wherein the ring members of each ring form a substantially continuous, closed loop, and an open position wherein the ring members of each ring form a discontinuous, open loop;
- a travel bar supported for movement in translation relative to the elongate plate and operatively connected to the hinge plates for moving the ring members between the closed and open positions, pivoting movement of the hinge plates from the closed position to the open position being blocked when the travel bar is in the closed position;
- and
- a spring arranged to bias said travel bar toward the closed position.
A ring binder mechanism, the mechanism comprising:
- an elongate plate having a longitudinal axis and two generally opposite longitudinal edges;
- hinge plates supported by said plate between said two edges for pivoting motion relative to the elongate plate;
- rings including ring members moveable by the hinge plates between a closed position wherein the ring members of each ring form a substantially continuous, closed loop, and an open position wherein the ring members of each ring form a discontinuous, open loop;
- a control structure supported by the elongate plate for movement relative to the elongate plate for controllably pivoting said hinge plates to thereby move the ring members between the closed and open positions, the control structure comprising a travel bar operatively connected to the hinge plates and movable in translation relative to the elongate plate for moving the hinge plates between the closed and open positions;
- and
- a spring arranged to bias said travel bar toward the closed position for locking the hinge plates in the closed position.
A ring binder mechanism, the mechanism comprising:
- an elongate plate having a longitudinal axis and two generally opposite longitudinal edges;
- hinge plates supported by said plate between said two edges for pivoting motion relative to the elongate plate;
- rings including ring members moveable by the hinge plates between a closed position wherein the ring members of each ring form a substantially continuous, closed loop, and an open position wherein the ring members of each ring form a discontinuous, open loop;
- a control structure supported by the elongate plate for movement relative to the elongate plate for controllably pivoting said hinge plates to thereby move the ring members between the closed and open positions, the control structure comprising a travel bar operatively connected to the hinge plates and movable in translation relative to the elongate plate for moving the hinge plates between the closed and open positions;
- the control structure further comprising an actuating lever, the lever being operatively connected to the travel bar such that pivoting motion of the lever produces movement of the travel bar generally lengthwise of the elongate plate, wherein the control structure is adapted to block pivoting movement of the hinge plates to open the rings when the ring members are in the closed position;
- and
- a spring arranged to bias said travel bar toward the closed position.
Dependencies are inferred from the claim text.