Binder device releasably engaging aperture or notch of sheet – Depository – Face member with back member
Patent
1979-03-09
1980-12-16
Bell, Paul A.
Binder device releasably engaging aperture or notch of sheet
Depository
Face member with back member
402 80R, B42F 1300
Patent
active
042394112
ABSTRACT:
A visible record loose-leaf binder for pages of strip sheet material arranged in partially overlapped fashion has a hinged cover to which are attached L-shaped members having a plurality of prongs thereon. The prongs extend through perforations in the sheet material to maintain the sheets in the binder. Sets of compensating pads having increasing height from the center of the binder to its upper and lower edges are provided to maintain the overlapped sheet material in substantially flat configuration when the binder is closed, and also provide a flat writing surface when the binder is opened. The L-shaped members are hinged together and held in opposed relation by a band surrounding the members. The band may have an internally or externally accessible locking means for opening and closing thereof.
REFERENCES:
patent: 121671 (1871-12-01), Shannon
patent: 1496335 (1924-06-01), Bennett
patent: 1754471 (1930-04-01), Krag
patent: 1811348 (1931-06-01), Burgoyne
patent: 2208231 (1940-07-01), Russell
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