Cover folders

Details Cover folders Cover folders

1982-06-14

1984-12-04

Spruill, Robert L.

Books, strips, and leaves

Book or leaf holder

Cooperating with leaf fold

281 45, 281 48, 281 49, 402 46, 24 67R, B42D 310, B42D 1700, B42F 900, B42F 106

Patent

active

044860323

ABSTRACT:
Cover folders having binders that securely retain the cover and inserted sheets, without the use of external fasteners. The binder is an elongated bar with an interior channel for receiving and holding a folded cover. The bar includes within the channel slanted ribs which engage the folded edge of the cover sheet along an overlapping flap. The overlapping flap of the cover sheet may be made more rigid by heat treatment and/or by a reinforcing coating.

REFERENCES:
patent: 1478219 (1928-12-01), Hammitt
patent: 3252462 (1966-05-01), Quarton et al.
patent: 3296673 (1967-01-01), Kirkpatrick
patent: 4351546 (1982-09-01), Cognata
patent: 4391457 (1983-07-01), Gassner

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