Plastic multi-ring paper binding system using one piece cover

Details Plastic multi-ring paper binding system using one piece cover Plastic multi-ring paper binding system using one piece cover

1989-04-27

1990-07-17

Bell, Paul A.

Bookbinding: process and apparatus

Process

Of edge fastening

281 151, 281 211, 281 271, 281 51, 402 80P, 402 80R, 402 70, 402 73, 402 75, 402502, 412 43, B42B 510

Patent

active

049418041

ABSTRACT:
A binder apparatus for use in binding together sheets of paper, each correspondingly pre-apertured with multiple openings along a margin includes a three panel one piece cover with a front and rear cover connected by a smaller cover spine portion with parallel scores defining respectively pivotal connections between each of the covers and the spine portions. A plastic ring-type binder includes a spine having an inner concave surface and an outer convex surface and parallel side portions, one side portion having multiple closely spaced flexible rings extending therefrom each with a single free end portion. One or more elongated adhesive bead member extends along the plastic spine convex surface and positioned adjacent the scores and the spine end portions thereof, bonding the spine to the cover set at the cover spine portion thereof.

REFERENCES:
patent: 2176314 (1939-10-01), Russell
patent: 2407656 (1946-09-01), Emmer
patent: 2891552 (1959-06-01), Trussell
patent: 4120517 (1978-10-01), Staats

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