Binder device releasably engaging aperture or notch of sheet – Sheet retainer with base or depository
Patent
1997-09-18
2000-06-20
Fridie, Jr., Willmon
Binder device releasably engaging aperture or notch of sheet
Sheet retainer with base or depository
402 68, 402 61, 402 64, 402 80P, 281 22, 281 36, 281 15, B42D 108, B42F 300
Patent
active
060769904
ABSTRACT:
A binder for sheets of paper comprises a bendable cover and a binding system secured centrally of the cover. The binding system has a one piece plastic construction comprising a base portion with first and second bosses formed from and located to either side of the base portion. The first boss has a plurality of spaced apart recesses and the second boss has a plurality of spaced apart posts which lock into the recesses of the first boss when the binder is folded upon itself in a binding position. Also provided are first and second sets of ribs again formed from the base between the first and second bosses. The ribs are hollow and are open from beneath to ease the bending of the binding system when the binder is folded to the binding position.
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Fridie Jr. Willmon
Thurston Alisa L.
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