Binder locking ring mechanism with configured trigger

Details Binder locking ring mechanism with configured trigger Binder locking ring mechanism with configured trigger

1990-11-05

1991-11-26

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 41, B42F 1326

Patent

active

050678400

ABSTRACT:
A loose-leaf binder having a casing and prong-carrying spring plates and having a mechanism for readily locking and unlocking the prongs through use of a trigger including pivot projections for pivoting on and in plate apertures. Locking is accomplished by lever lugs engaging casing blisters.

REFERENCES:
patent: 1897001 (1933-02-01), Dawson
patent: 1927113 (1933-09-01), Dawson
patent: 2061676 (1936-11-01), Schade
patent: 2218105 (1940-10-01), Griffin
patent: 3098490 (1963-07-01), Wance
patent: 3101719 (1963-08-01), Vernon
patent: 3884586 (1975-05-01), Michaelis et al.
patent: 4813803 (1989-03-01), Gross

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