Binder device releasably engaging aperture or notch of sheet – Pliant – deformable sheet retainer – Flaccid retainer secured by knotted – intertwined or wedge...
Patent
1977-11-09
1979-11-20
Abercrombie, Willie G.
Binder device releasably engaging aperture or notch of sheet
Pliant, deformable sheet retainer
Flaccid retainer secured by knotted, intertwined or wedge...
402 75, A47L 1326
Patent
active
041749090
ABSTRACT:
A binder is provided manufactured in a single step operation from a single sheet of material and comprises front and back covers, a backing intermediate the two, and fastening means manufactured in one of the back covers and slot arrangements disposed adjacent to, or in, the backing to lock the fastening means. The binder is thus very inexpensive to manufacture and is easily used by industry in large quantities.
REFERENCES:
patent: 2042366 (1936-05-01), Swank
patent: 2133069 (1938-11-01), Williamson
patent: 2329786 (1943-09-01), Ringler
patent: 2445671 (1948-07-01), Johnson
patent: 2451122 (1948-10-01), Sherwood
patent: 2468355 (1949-04-01), Ambler
patent: 2575583 (1951-11-01), Clarke et al.
patent: 2911977 (1959-11-01), French
patent: 2961785 (1960-11-01), Toepfer
patent: 3318354 (1967-05-01), Borisof
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