Ring binder mechanism

Details Ring binder mechanism Ring binder mechanism

1998-01-26

1999-10-26

Fridie, Jr., Willmon

Binder device releasably engaging aperture or notch of sheet

Sheet retainer travels arcuate path

Travel in plane perpendicular to axis of rotation

402 31, 402 32, 402 38, 402 41, 402 75, 411457, 411461, 411462, 411463, B42F 304, B42F 1300, F16B 1500

Patent

active

059716495

ABSTRACT:
A ring binder mechanism adapted to be secured to a cover is disclosed as including a substantially rigid upper curved housing supporting a pair of plates to which three pairs of half-ring members are mounted, and a pair of rivets for engagement with the cover. The plates are pivotably movable between a first configuration in which the pairs of half-rings are closed, and a second configuration in which the pairs of half-rings are open. Each rivet includes an anchor plate to abut the cover and at least one claw penetrable into said cover in order to secure the ring binder mechanism to the cover, and the anchor plate includes a number of ridges or troughs.

REFERENCES:
patent: 5100253 (1992-03-01), Cooper
patent: 5160209 (1992-11-01), Schuessler
patent: 5755513 (1998-05-01), To
patent: 5788391 (1998-08-01), Cheung
patent: 5810500 (1998-09-01), Whaley
patent: 5816729 (1998-10-01), Whaley
patent: 5836709 (1998-11-01), Cheung
patent: 5846013 (1998-12-01), To
patent: 5868513 (1999-02-01), Law

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