Ring binder mechanism

Details Ring binder mechanism Ring binder mechanism

1987-06-03

1989-01-17

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 38, B47F 304

Patent

active

047984910

ABSTRACT:
A ring binder mechanism has a resilient mechanism cover, to be attached in use to a book-shaped binder cover, and two oppositely articulately connected, moveable, ring-rail or ring-coil members carrying ring portions which form rings jointly in pairs, resiliently supported in the mechanism cover to be actuated by means of at least one movable actuating member to open and close the rings. According to the invention, the actuating member is adapted for movement about an axis of rotation aligned substantially perpendicular to the mechanism cover and is provided with a gear coupling it to move the ring-rail or ring-coil members.

REFERENCES:
patent: 779142 (1905-01-01), Trussell
patent: 3884586 (1975-05-01), Michaelis et al.
patent: 4352582 (1982-10-01), Eliasson

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