Binder device releasably engaging aperture or notch of sheet – Resilient sheet retainer requiring deflection for sheet removal
Patent
1978-08-21
1980-03-18
Bell, Paul A.
Binder device releasably engaging aperture or notch of sheet
Resilient sheet retainer requiring deflection for sheet removal
402 57, 402500, B42F 306
Patent
active
041937040
ABSTRACT:
A fastener to permit the capture and release by a selected medium of the wire binder on notebooks, tablets, or the like. The fastener includes a series of tabs which are profiled so that the captured medium resists removal due to ordinary stresses, but may be inserted and removed by means of an easily applied transverse force.
REFERENCES:
patent: 717957 (1903-01-01), Weaver
patent: 1107351 (1914-08-01), Proudfit
patent: 1222881 (1917-04-01), McCullough
patent: 2232058 (1941-02-01), Farkas et al.
patent: 2848163 (1958-08-01), Serrell
patent: 3270874 (1966-09-01), Hilton
patent: 3315683 (1967-04-01), Rodriguez et al.
patent: 3899842 (1975-08-01), Schneider
Bushman Thomas
Kruger Kurt
Miller Scott
Van Dyck Kenneth
Bell Paul A.
Dennison Manufacturing Company
Kersey George E.
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