Ratchet binding device for multiple sheets of paper

Details Ratchet binding device for multiple sheets of paper Ratchet binding device for multiple sheets of paper

1993-11-23

1994-06-14

Rosenbaum, Mark

Binder device releasably engaging aperture or notch of sheet

Sheet retainer with releasable keeper

Keeper including wedge type securing means

402 60, 402 68, B42F 300

Patent

active

053204565

ABSTRACT:
A binder for multiple sheets of paper employing a simple ratchet mechanism to secure the paper without the need for punching holes in the paper. The binding device includes a base member which is an elongated bar of L-shaped cross section with integral end plates. The binding device further includes a mating clamping member which is a slotted plate with an internally extending tongue. The back wall inside surface of the base member has a series of parallel, elongated saw-tooth ribs or grooves forming teeth with which the tongue engages in a ratchet-like manner. The teeth may be spaced in a staggered type arrangement to increase their effective number. Grooves forming teeth may also be placed on an outside surface of the base member back wall to increase the binding force. The end plates may be slotted to accept a finger adapted with notches on an underside to further ensure that the papers are securely bound.

REFERENCES:
patent: 795611 (1905-07-01), Hestmark
patent: 885648 (1908-04-01), Rice
patent: 2779987 (1957-02-01), Jordan
patent: 3507601 (1970-04-01), Smith
patent: 3612709 (1971-10-01), Miyamoto
patent: 4453850 (1984-06-01), Purcocks
patent: 4529226 (1985-07-01), Weinman
patent: 4579472 (1986-04-01), Andrews
patent: 5096323 (1992-03-01), Walker
patent: 5226360 (1993-07-01), Kramka

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