Loose-leaf binder

Details Loose-leaf binder Loose-leaf binder

1979-08-08

1981-08-04

Bell, Paul A.

Binder device releasably engaging aperture or notch of sheet

Sheet retainer travels arcuate path

Travel in plane perpendicular to axis of rotation

402 73, 402 75, 402 76, 402 80P, B42F 1322

Patent

active

042819407

ABSTRACT:
A loose-leaf binder makes use of a hinged back comprising parallel hinge leaves pivotally attached to each other at adjacent edges. There is an interlock at one end consisting of resilient flanges normally interlocked in overlying relationship, but releasable by tilting one flange away from the other. Rings which extend through the holes in sheets of paper may be individually mounted in a retention track so that they can be varied as to spacing and also varied as to the number of rings made use of.

REFERENCES:
patent: 1362951 (1920-12-01), McBee
patent: 2528866 (1950-11-01), Dawson, Jr.
patent: 2891553 (1959-06-01), Acton
patent: 3252461 (1966-05-01), Schade
patent: 3944374 (1976-03-01), Young et al.

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