Locking ring binder

Details Locking ring binder Locking ring binder

1990-12-28

1992-05-26

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 1322, B42F 1326

Patent

active

051161575

ABSTRACT:
A locking ring binder assembly has a resilient sheet metal cover and a pair of operating levers rotatably mounted on the covers. A detent consisting of a projection on the inside of the cover and a corresponding projection on the operating levers locks the binder in a closed position even though the operating levers are not rotated to an over center position.

REFERENCES:
patent: 2056812 (1936-10-01), Unger
patent: 2673564 (1954-03-01), Derringer
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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