Spiral binder with locking element

Details Spiral binder with locking element Spiral binder with locking element

1998-11-19

2000-04-04

Pitts, Andrea L.

Binder device releasably engaging aperture or notch of sheet

Resilient sheet retainer requiring deflection for sheet removal

29521, 2952501, 29766, 281 211, 402 26, 402 79, 402 80R, 402501, 412 39, 412 40, B42F 302

Patent

active

060452854

ABSTRACT:
A reusable refillable binder for use with papers having marginal perforations. The binder including a spiral coil having tapered ends, each of the ends of the coil having an area width for receipt of a removable locking element. A removable locking element for securement to binding element about the area of reduced width to prevent the unintentional unbinding of the binder when secured to the coil and to allow the user to unbind the binder when the locking element is removed.

REFERENCES:
patent: 2099881 (1937-11-01), Emmer
patent: 2188680 (1940-01-01), Farkas
patent: 2249064 (1941-07-01), Tauber
patent: 2754826 (1956-07-01), Berberich
patent: 3373748 (1968-03-01), MacCormack
patent: 5417508 (1995-05-01), Friedman

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