Binder device releasably engaging aperture or notch of sheet – Miscellaneous – Sheet lifters
Patent
1991-09-30
1993-12-07
Bell, Paul A.
Binder device releasably engaging aperture or notch of sheet
Miscellaneous
Sheet lifters
211126, 402 80L, 402 73, B42F 1300
Patent
active
052678040
ABSTRACT:
An apparatus (10) for making a binder self-supporting has a right-angular shaped side wall (20) of a height approximately equal to the width of the spine (34) of a binder (30). The right-angular shaped side wall is perpendicularly connected to a right-angular shaped bottom wall (22). The right-angular shaped bottom wall (22) is affixed to the inside surface (38) of either the front or back cover (36) of the binder (30). Once the apparatus (10) is affixed to the binder (30), the open edge of the binder (30), which is opposite the spine (34), presents a box-like configuration. The edge (24) of the right-angular shaped bottom wall (22) is bevelled so that sheets filed in the binder (30) more easily pass over that edge (24).
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patent: 530806 (1894-12-01), Tilton
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patent: 3480154 (1969-11-01), Telfer
patent: 4157757 (1979-06-01), Gallagher, Jr.
patent: 4531764 (1985-07-01), Chang
patent: 4569613 (1986-02-01), Thomas
patent: 4744689 (1988-05-01), Sternberg
patent: 5002416 (1991-03-01), Serzen
Bell Paul A.
Drew Michael V.
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