Device for perfected closure of the mechanism having flat rings

Details Device for perfected closure of the mechanism having flat rings Device for perfected closure of the mechanism having flat rings

1996-10-03

1998-06-16

Fridie, Jr., Willmon

Binder device releasably engaging aperture or notch of sheet

Sheet retainer travels arcuate path

402 39, B42F 1300

Patent

active

057659567

ABSTRACT:
The perfected closure device comprises rings (2) and screws (3) which are formed with a single presswork operation together with the strip (1) to be placed at the disposal of the user. The latter with a simple coin screws screws (3) within suitable orifices formed on strip (1), the latter being fixed to the internal surface of the folder. There is also provided that each ring (2) may be closed simply by causing projections (5) which are formed on the base of each ring to penetrate within shaped grooves (4), the latter being formed at the opposite end of the same ring, an operation which is easy due to the elasticity of the material which constitutes the rings.

REFERENCES:
patent: 2460718 (1949-02-01), Stevens
patent: 2716985 (1955-09-01), Wolf

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