Ring binder mechanism with mating rings

Details Ring binder mechanism with mating rings Ring binder mechanism with mating rings

1985-08-26

1987-09-01

Goldberg, Howard N.

Binder device releasably engaging aperture or notch of sheet

Sheet retainer travels arcuate path

Travel in plane perpendicular to axis of rotation

402 31, B42F 1320, B42F 1322, B42F 1330

Patent

active

046905804

ABSTRACT:
The ring binder mechanism comprises a resilient mechanism cover which can be connected to the spine of a binder or cover, two toggle plates or toggle rods which are articulately connected in opposite senses and which are resiliently supported in the mechanism cover, and ring portions which cooperate in pairs to form rings and which are carried by the toggle plates or toggle rods, consist of drawn or rolled metal wire of non-round cross-section and have ends which positively interengage locally in the closed position. At their free ends, the ring portions have plane end faces which bear snugly against one another in the closed position and one ring portion of each pair of ring portions having a pin which is cylindrical over at least its main length and which projects perpendicularly from the end face and the other ring portion having a bore which is cylindrical over at least its main length and is sunk perpendicularly in the end face.

REFERENCES:
patent: 724849 (1903-04-01), Gresham
patent: 778992 (1905-01-01), Nelson
patent: 854303 (1907-05-01), Nethery
patent: 2119639 (1938-06-01), Lotter
patent: 3246653 (1966-04-01), Sexton
patent: 3833308 (1974-09-01), Seaborn

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