Ring binder mechanism

Details Ring binder mechanism Ring binder mechanism

1994-10-26

1996-11-26

Fridie, Jr., Willmon

Binder device releasably engaging aperture or notch of sheet

Sheet retainer travels arcuate path

Travel in plane perpendicular to axis of rotation

402 36, B42F 304

Patent

active

055778526

ABSTRACT:
A ring binder mechanism having two carrier rails which are arranged in a resilient casing member and which bear against each other, the angle formed between said carrier rails changing from an obtuse to an acute angle and vice versa during opening and closing of pairs of half rings associated with said carrier rails, wherein the casing member has a connection point in at least one end of the casing for connecting the casing to a support and the casing member is strengthened by at least one channel or bead extending from within a recess about the connection point to a point between the recess and the pair of half rings closest to the recess.

REFERENCES:
patent: 5106222 (1992-04-01), D'Amore
patent: 5286128 (1994-02-01), Gillum

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