Binder device releasably engaging aperture or notch of sheet – Resilient sheet retainer requiring deflection for sheet removal
Patent
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
Pitts Andrea L.
Smith Monica
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