Reusable/refillable spiral binder
OwnerMichael N. Friedmaninventor
Life of this patent
Estimating the term…
Abstract
A reusable/refillable binder for papers and the like having marginal perforations. The binder includes a binding element having opposite coiled ends and a multiplicity of spiral coils disposed therebetween adapted to be received within the perforations in the papers in threaded relations thereof. Each coiled end of the binding element includes an aperture extending therethrough. A removable locking element is coupled to the aperture at each respective coiled end of the binding element and to one of the multiplicity of spiral coils to prevent rotation of the multiplicity of spiral coils and thus unbinding of the papers from the binder.
Claims18
A binder for papers having marginal perforations, said binder comprising:
- a) a binding element adapted to be received within said perforations on said papers in threaded relation thereof, said binding element including opposite coiled ends and a plurality of spiral coils disposed therebetween, each of said coils having a predetermined pitch value and a predetermined cross-sectional area, at least one of said coiled ends having an aperture therethrough;
- and
- b) a removable locking element coupled to said aperture at least at one of said coiled end of said binding element whereby said predetermined pitch values and cross-sectional area of said coils facilitate threading and unthreading of said binding element with respect to said perforations and said removable locking element prevents relative rotation of said plurality of spiral coils when said binding element is received within said perforations.
A binder for papers having marginal perforations, said binder comprising:
- a) a binding element comprising a flat strip of coiled material and adapted to be received within said perforations on said papers in threaded relation thereof, said binding element including opposite coiled ends and a plurality of spiral coils disposed therebetween, each of said coiled ends having an aperture therethrough;
- and
- b) a removable locking element coupled to said aperture at each respective coiled end of said binding element and one of said plurality of spring coils to prevent rotation of said spiral coils and thus unbinding of said papers from said binder.
A binding construction comprising:
- a) a stack of sheets having marginal perforations;
- b) a relatively rigid cover overlying said stack, said cover including marginal perforations in register with said perforations in said stack;
- c) a binding element extending through said respective perforations in said stack and said cover, said binding element including opposite coiled ends and a plurality of spiral coils disposed therebetween, each of said coiled ends including an aperture therethrough;
- and
- d) a removable locking element coupled to said aperture at each respective coiled end of said binding element and one of said plurality of spiral coils to prevent rotation of said spiral coils and thus unbinding of said sheets and covers from said binding construction.
Dependencies are inferred from the claim text.