| 摘要 |
A system for retaining stacks of loose-leaf papers in a file folder providing random access to any one sheet is disclosed. The system includes flexible retainer strips sized to fit through perforated holes in the paper and whose ends are configured to releasably couple to form enclosure rings. The ends are securely engaged by relative twisting and inserting of one into the other. A series of adjustment apertures along the length of the retainer allows the formation of varying sizes of enclosure rings. Loops secured to the file folder receive the retainer strips thus holding the paper stack to the folder. The loops are positioned proximate an edge of the folder and pivotally mounted with a rotational axis aligned with the edge so as to rotate from one side of the folder to the other. The front or back side of any sheet in the stack may thus be displayed flat for photocopying or other purpose without removal from the retainer system. The mounting support for the loops may be attached to an existing folder with conventional bendable metal tabs, or may include such bendable tabs and be adhesively or otherwise permanently secured to a folder by the manufacturer or by the user. The mounting support may be of various materials and include separate pivoting loops in a hinge or have loops integral with the support pivoting about one or more "living" hinges.
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