Ring binder

Details Ring binder Ring binder

1982-05-06

1984-03-20

Kazenske, E. R.

Binder device releasably engaging aperture or notch of sheet

Pliant, deformable sheet retainer

402 13, 402 15, B42F 1300, B42F 1306

Patent

active

044377819

ABSTRACT:
A ring binder comprising a pair of covers connected by a flexible back portion consisting of a flexible back strip which separates the inner edges of the cover and strip portions which overlap portions of the covers near the inner edges. The overlapping portions of the covers are provided with pairs of holes for receiving flexible binder prong means having a free end which extends through an eye at another end to form a loop.

REFERENCES:
patent: 739332 (1903-09-01), Melzer
patent: 1829613 (1931-10-01), Sato
patent: 2042366 (1936-05-01), Swank
patent: 2124282 (1938-07-01), Behnke
patent: 2133069 (1938-10-01), Williamson
patent: 2468355 (1949-04-01), Ambler
patent: 2559556 (1951-07-01), Ambler
patent: 2607351 (1952-08-01), Allison
patent: 2632657 (1953-03-01), Schade
patent: 2773504 (1956-12-01), McGervey
patent: 2936980 (1960-05-01), Rapata
patent: 3238948 (1966-03-01), Fiedler
patent: 3315682 (1967-04-01), Bachman

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