Ring binder

Details Ring binder Ring binder

1995-10-20

1998-06-30

Han, Frances

Binder device releasably engaging aperture or notch of sheet

Sheet retainer travels arcuate path

Travel in plane perpendicular to axis of rotation

402 70, 402 73, 402 75, B42F 1316

Patent

active

057723486

ABSTRACT:
A ring binder (100, 200, 300) adapted to be secured to a cover (112, 212, 312) is disclosed as comprising a substantially rigid upper plate member (102, 202, 302) supporting two pivotable lower plates (104a, 104b, 204a, 204b, 304a, 304b) to which a plurality of rings (106, 206, 306) are mounted, and at least a set of claws (108, 208, 308) integrally formed with the ring binder (100, 200, 300) and adapted to secure the ring binder (100, 200, 300) to the cover (112, 212, 312).

REFERENCES:
patent: 813753 (1906-02-01), Trussell
patent: 1494626 (1924-05-01), Pitt
patent: 1932874 (1933-10-01), Adams et al.
patent: 3950107 (1976-04-01), Seaborn
patent: 4697945 (1987-10-01), Geiger
patent: 5035526 (1991-07-01), Cooper et al.
patent: 5100253 (1992-03-01), Cooper
patent: 5160209 (1992-11-01), Schuessler
patent: 5354142 (1994-10-01), Yu
patent: 5476335 (1995-12-01), Whaley
patent: 5577852 (1996-11-01), To

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