Binder device releasably engaging aperture or notch of sheet – Resilient sheet retainer requiring deflection for sheet removal
Reexamination Certificate
2007-11-20
2007-11-20
Howell, Daniel W. (Department: 3722)
Binder device releasably engaging aperture or notch of sheet
Resilient sheet retainer requiring deflection for sheet removal
C402S038000, C402S073000
Reexamination Certificate
active
10323052
ABSTRACT:
A ring binder mechanism for retaining loose leaf pages. The mechanism includes a rigid, elongate plate having a longitudinal axis. Hinge plates are supported by the plate for pivoting relative to the elongate plate. Rings for holding loose leaf pages include ring members 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 to a position toward the closed position of the hinge plates.
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Kokuyo Lock Ring Mechanism with description, two instruction sheets, and nine photographs, undated but admitted as prior art.
Cheng Ho Ping
Cheng Hung Yu
Howell Daniel W.
Senniger Powers
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