Loose leaf binders

Details Loose leaf binders Loose leaf binders

1974-05-06

1977-01-04

Schnall, Jerome

Binder device releasably engaging aperture or notch of sheet

Resilient sheet retainer requiring deflection for sheet removal

Releasably attached to keeper

402 45, 402 63, 402 68, 402 71, 402 75, B42F 300, B42F 1302

Patent

active

040009513

ABSTRACT:
A loose leaf binder which can be moulded as an integral structure from resilient plastics, e.g. polypropylene has posts which lie in openings in a side portion of the binder and are pivotable into the upright position. Projections on the posts or the side portion adjacent the pivotal connection serve to maintain the posts releasably in the upright position. The free ends of the posts are engageable in openings in the other side portion and movable locking members are provided to positively lock the ends of the posts in these openings.

REFERENCES:
patent: 988090 (1911-03-01), Hamilton
patent: 2133069 (1938-10-01), Williamson
patent: 3087498 (1963-04-01), Vogel
patent: 3383786 (1968-05-01), McIntosh
patent: 3536202 (1970-11-01), Vernon
patent: 3537146 (1970-11-01), Caveney
patent: 3768838 (1973-10-01), Shibata
patent: 3854650 (1974-12-01), Hanaue

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