Binder device releasably engaging aperture or notch of sheet – Resilient sheet retainer requiring deflection for sheet removal – Releasably attached to keeper
Patent
1988-12-27
1991-04-23
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 60, 402 68, 412 34, 412 39, B42F 1304
Patent
active
050095374
ABSTRACT:
This is a booklet binding system which includes an elongated closure unit specifically constructed and arranged to be removably inserted between the two rows of opposed spaced apart loops of a wire loop binding unit, wherein the closure unit defines a pair of spaced apart loop receiving grooves specifically oriented and arranged to receive the two rows of loops to interlock therewith and provide the desired closure therebetween.
REFERENCES:
patent: 1556049 (1925-10-01), Trussell
patent: 2123846 (1938-07-01), Cruzan
patent: 2139480 (1938-12-01), Young
patent: 2463946 (1949-03-01), Brook
patent: 4773787 (1988-09-01), Chang
Adams John W.
Bell Paul A.
Creative Binding Systems, Inc.
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