Composite looseleaf mechanism

Details Composite looseleaf mechanism Composite looseleaf mechanism

1979-11-07

1981-04-28

Bell, Paul A.

Binder device releasably engaging aperture or notch of sheet

Resilient sheet retainer requiring deflection for sheet removal

Releasably attached to keeper

402 45, 402 69, B42F 304

Patent

active

042642280

ABSTRACT:
A side-opening composite looseleaf binding apparatus for attachment to a backbone of a looseleaf binder cover. The binding apparatus comprises a one-piece molded plastic base having a planar floor portion, a stationary wall portion, a hinged wall portion separated from the stationary wall portion by a floor portion, and wherein the hinged wall portion includes an integral plastic hinge. A one-piece stamped metal finger or ring unit is provided having a strip portion connected to the hinge wall portion and a plurality of curved fingers or rings extending from the strip portion. In a closed position, the curved fingers have ends which are adjacent to and below an upper edge of the stationary wall. A spring member provides an opening bias for the finger unit and a locking member locks the finger portions of the finger unit in a closed position.

REFERENCES:
patent: 2017188 (1935-10-01), Tannehill
patent: 2230505 (1941-02-01), Thesieres
patent: 2459541 (1949-01-01), Russell
patent: 3057357 (1962-10-01), Duncan
patent: 3111949 (1962-11-01), Duncan et al.
patent: 3162198 (1964-12-01), Dennis
patent: 3251364 (1966-05-01), Goldman
patent: 3252461 (1966-05-01), Schade
patent: 3313303 (1967-04-01), Beyer
patent: 3313304 (1967-04-01), Beyer
patent: 3574472 (1971-04-01), Cott
patent: 4056326 (1977-11-01), Crawford

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