Binder device releasably engaging aperture or notch of sheet – Opposed sheet retainers involving relative rectilinear travel – Travel from aligned to aligned – spaced position
Patent
1987-09-18
1988-05-10
Bell, Paul A.
Binder device releasably engaging aperture or notch of sheet
Opposed sheet retainers involving relative rectilinear travel
Travel from aligned to aligned, spaced position
402 55, B42F 1316
Patent
active
047431342
ABSTRACT:
A ring-type binder for retaining loose-leaf sheets of paper is disclosed. The binder has base and top members which are slidably secured to each other. Mounted to each of these members along and projecting from an edge are a plurality of half-ring members. With this configuration the base and top members can be slid between an open position and a closed position in which the half-rings of the top member are mated with the half-rings of the base member.
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Reinherz William
Schleich Thomas
Bell Paul A.
Haugen Orrin M.
Niebuhr Frederick W.
Nikolai Thomas J.
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