Removable binding device

Details Removable binding device Removable binding device

1975-10-23

1978-09-12

Schnall, Jerome

Binder device releasably engaging aperture or notch of sheet

Opposed sheet retainers involving relative rectilinear travel

402 47, 402 68, 402 75, B42F 300, B42F 1312

Patent

active

041133943

ABSTRACT:
An inexpensive polymeric device for releasably retaining a stack of perforated paper, including a pair of rake-like members each comprising a rail supporting projecting studs. The rake-like members are assemblable by inserting studs on each through the paper perforations from opposite sides of the stack and into sockets formed on the other rail to form a ladder-like assembly engaged with the paper. The rails on the ladder-like assembly are slid into close fitting channels defined on a backing strip which extends around the spine edge of the stack to keep the rake-like members in engagement, and are retained therein by end portions of the rails adapted to engage over the ends of the channels. Subsequently a user can squeeze together on cam surfaces on the end portions of the strips to simultaneously disengage them from the ends of the channels and move them into the channels so that the ladder-like assembly can be slid out of the backing strip and disassembled.

REFERENCES:
patent: 228642 (1880-06-01), Jelliff
patent: 1243544 (1917-10-01), Murray
patent: 2002071 (1935-05-01), Welk
patent: 2057514 (1936-10-01), Dawson et al.
patent: 2083556 (1937-06-01), Buchan
patent: 3260264 (1966-07-01), McKowen
patent: 3734634 (1973-05-01), Fenston
patent: 3834739 (1974-10-01), Abildgaard et al.

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