Loose- leaf binder structure

Binder device releasably engaging aperture or notch of sheet – Sheet retainer with base or depository

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Details

402 73, 402 79, 402 80R, B42F 300

Patent

active

058880119

ABSTRACT:
A binder for containing a plurality removable paper sheets and having a back portion with covers attached to each side thereof and an elongated spine portion attached to the inside of the back portion with a plurality of binder rings integrally formed with the elongated spine to form a single unit. The annular rings have an outer portion of a first width and an inner portion of a second smaller width that matingly engages die-cut recesses in each sheet that likewise have a first narrow portion extending inwardly from the edge of the sheet to a second portion having a greater width than the first narrow portion such that the paper sheets can be inserted and removed from attachment to the binder rings.

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