Ring binder adaptor for removable covers

Details Ring binder adaptor for removable covers Ring binder adaptor for removable covers

1991-07-12

1992-05-26

Bell, Paul A.

Books, strips, and leaves

Book, element thereof, or accessory therefor

Covers

281 37, 402 73, 402 75, 402 80P, B42D 300, B42D 306, B42F 1300

Patent

active

051160811

ABSTRACT:
An adaptor for a ring separator is attached to a conventional ring separator mechanism and provides a means for attaching removable covers to form a binder. The adaptor has a plurality of slots on each side requiring a cover, with at least one slot on each side having an upwardly extending projection which is matable with a hole in a removable cover. The removable cover also has a notched edge with extending portions being receivable slots in the adaptor. When pressed into the slots, the projection engages the hole to hold the cover in place. Utilizing such an adaptor provides a simple efficient means of providing removable covers for a ring binder.

REFERENCES:
patent: 433337 (1890-07-01), Fitzgerald
patent: 1437329 (1922-11-01), Wilburger
patent: 1508821 (1924-09-01), Schade
patent: 1802793 (1931-04-01), Trussell
patent: 1972048 (1933-10-01), Rennie
patent: 2583403 (1952-01-01), Wiser
patent: 3074744 (1963-01-01), Pucci et al.
patent: 3159411 (1964-12-01), McKowen
patent: 4596482 (1986-06-01), Salzer
patent: 4934738 (1990-06-01), Colonna

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