Binder for perforated sheets

Details Binder for perforated sheets Binder for perforated sheets

1985-02-05

1986-08-26

Spruill, Robert L.

Binder device releasably engaging aperture or notch of sheet

Resilient sheet retainer requiring deflection for sheet removal

Opposed sheet retainers

402 19, 402 80P, B42F 1316, B42F 1302

Patent

active

046079700

ABSTRACT:
A one piece binder for perforated sheets, including a base portion and at least a ring. The ring comprised two members which, when locked, present a smooth and continuous surface and, when unlocked, are spring-biased apart. The locking means on one ring member terminates in resilient guide and latching portions which are received in an apertured portion of the other member.

REFERENCES:
patent: 833458 (1906-10-01), Hausherr
patent: 2099881 (1935-10-01), Emmer
patent: 3205897 (1962-11-01), Jamison
patent: 3251364 (1964-11-01), Goldman
patent: 3270749 (1985-10-01), O'Connell
patent: 3331373 (1965-10-01), Lohmeier
patent: 3529900 (1967-11-01), Pettit
patent: 3728036 (1973-04-01), Cott

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