Binder for perforated sheets or the like

Details Binder for perforated sheets or the like Binder for perforated sheets or the like

1981-01-13

1983-02-22

Bell, Paul A.

Binder device releasably engaging aperture or notch of sheet

Resilient sheet retainer requiring deflection for sheet removal

Releasably attached to keeper

402 80P, B42F 1310, B42F 1318

Patent

active

043746276

ABSTRACT:
A two part binder for perforated sheets or the like in which a toothed binder member is provided with a constant opening through which sheets are moved for binding engagement with and disengagement from the teeth of the binder member. Another member closes the opening and has tracks for frictional engagement with the sides of the opening to prevent separation of the members in response to the application of the separating force.

REFERENCES:
patent: 2099881 (1937-11-01), Emmer
patent: 2116078 (1938-05-01), Mevi
patent: 2139480 (1938-12-01), Young
patent: 2170260 (1939-08-01), Cruzan
patent: 2202567 (1940-05-01), Spinner
patent: 2246702 (1941-06-01), Stewart
patent: 2314204 (1943-03-01), Fontecilla
patent: 2450785 (1948-10-01), Emmer
patent: 2617423 (1952-11-01), Miller
patent: 3180488 (1965-04-01), Heusmann

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