Binder device releasably engaging aperture or notch of sheet – Resilient sheet retainer requiring deflection for sheet removal – Releasably attached to keeper
Patent
1977-01-19
1978-05-09
Adams, Russell E.
Binder device releasably engaging aperture or notch of sheet
Resilient sheet retainer requiring deflection for sheet removal
Releasably attached to keeper
354 18, 354 19, 402 60, G03B 1500
Patent
active
040890090
ABSTRACT:
A perforated film matrix is attached to a cylindrical drum by means of clips having an upwardly raised flange along one edge. The film matrix is initially held on the drum by two pairs of protruding members extending through said perforations. The clips are then vertically inserted along opposite borders of the film matrix between each pair of protruding members.
REFERENCES:
patent: RE28785 (1976-04-01), Hanson et al.
Adams Russell E.
Castcraft Industries, Inc.
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