Ring binder with locking device

Details Ring binder with locking device Ring binder with locking device

1998-02-17

2000-01-04

Fridie, Jr., Willmon

Binder device releasably engaging aperture or notch of sheet

Resilient sheet retainer requiring deflection for sheet removal

Releasably attached to keeper

402 58, 402 20, 402 19, 402 34, 402 80P, 402 80R, 402 60, 402 4, B42F 302, B42F 300, B42F 1300

Patent

active

060102705

ABSTRACT:
A ring type binder for perforated sheets or the like in which two members are coaxially secured so that a slot is formed along each longitudinal edge of the members. Another partially open ring member is provided that is configured to be slidably received in the slots so that ring member may be moved from an opened to a closed position. A locking device is provided so that the binder may be selectively locked in the closed portion, thereby preventing the unwanted shifting of the members.

REFERENCES:
patent: 973452 (1910-10-01), Morden et al.
patent: 2116078 (1938-05-01), Mevi
patent: 2244663 (1941-06-01), Adams
patent: 2450785 (1948-10-01), Emmer
patent: 2489706 (1949-11-01), Emmer
patent: 4374627 (1983-02-01), Friedman
patent: 4511274 (1985-04-01), Chen
patent: 5037229 (1991-08-01), Stengel

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