Ring binder

Details Ring binder Ring binder

1995-10-20

1999-11-09

Fridie, Jr., Willmon

Binder device releasably engaging aperture or notch of sheet

Sheet retainer travels arcuate path

402 36, 402 31, B42F 1300

Patent

active

059801468

ABSTRACT:
A ring binder (100, 200) adapted to be secured to a cover (116, 214) is disclosed as comprising a substantially rigid upper plate member (102, 202) supporting a pair of lower pivotable plates (104a, 104b, 204a, 204b) to which a plurality of rings (106, 206) are mounted, and the upper plate member (102, 202) comprises two ends and the cover (116, 214) abuts at least part of the upper plate member (102, 202), and said part surrounds the end of the upper plate member (102, 202) by substantially 360.degree..

REFERENCES:
patent: 813753 (1906-02-01), Trussell
patent: 1494626 (1924-05-01), Pitt
patent: 1813599 (1931-07-01), Adams
patent: 1816021 (1931-07-01), Meyerson
patent: 1932874 (1933-10-01), Adams et al.
patent: 2325155 (1943-07-01), Wedge
patent: 2447963 (1948-08-01), Segal
patent: 2552076 (1951-05-01), Wedge
patent: 5476335 (1995-12-01), Whaley

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