Clamp lock binding

Details Clamp lock binding Clamp lock binding

1991-08-16

1992-06-23

Eley, Timothy V.

Books, strips, and leaves

Book, element thereof, or accessory therefor

Binding

402 68, 412 43, B42D 100

Patent

active

051236753

ABSTRACT:
A molded plastic binding for positively securing a plurality of sheets of thin material having apertures along one edge, wherein two binding strips are provided, one with projecting fingers which mesh with the apertures of the thin material and apertures of the second binding strip; wherein the linear protrusions on the projecting fingers of the first binding strip lock beneath wedges along elongated holes on the second binding strip so that the sheets are securely fastened together against accidental or deliberate opening. A preferred embodiment incorporates rectangular apertures in the thin material on any multiple of 0.5625 inch centers with the fingers having a cross-section considerably less than the area of the individual apertures of the thin material but with a finger width slightly less than the narrow side of the rectangular aperture.

REFERENCES:
patent: Re28202 (1974-10-01), Abildgaard et al.
patent: 4369013 (1983-01-01), Abildgaard et al.
patent: 4453851 (1984-06-01), Purcocks
patent: 4620724 (1986-11-01), Abildgaard et al.
patent: 4625996 (1986-12-01), Hymmen
patent: 4685700 (1987-08-01), Abildgaard

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