Paper retaining structure of a loose-leaf file folder

Details Paper retaining structure of a loose-leaf file folder Paper retaining structure of a loose-leaf file folder

2003-02-10

2003-12-23

Carter, Monica S. (Department: 3721)

Binder device releasably engaging aperture or notch of sheet

Segmental sheet retainer

C024S06700R, C024S067110, C281S015100, C281S021100, C402S060000, C402S070000, C402S073000, C402S08000L, C402S502000, CD19S026000

Reexamination Certificate

active

06666608

ABSTRACT:

RELATED U.S. APPLICATIONS
Not applicable.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not applicable.
REFERENCE TO MICROFICHE APPENDIX
Not applicable.
FIELD OF THE INVENTION
The present invention relates generally to a loose-leaf file folder, and more particularly to a paper-retaining structure of the loose-leaf file folder.
BACKGROUND OF THE INVENTION
The conventional loose-leaf file folder comprises two covers, a spine located between the two covers, and a paper-retaining structure enabling papers to be easily removed or replaced. The paper-retaining structure comprises two paper-holding devices opposite to each other. The paper-holding devices may comprise an elastic means to hold the papers in place. The paper-holding devices are mounted in the folder by a locating means.
The conventional loose-leaf file folder is defective in design in that the paper-retaining structure is complicated in construction and is therefore not cost-effective. In addition, the paper-retaining structure is made of a material different in nature from the material of which the covers and the spine of the conventional loose-leaf file folder are made. As a result, the conventional loose-leaf file folder cannot be integrally made. In light of the covers, the spine, and the paper-retaining structure of the conventional loose-leaf file folder being made of different materials, the conventional loose-leaf file folder poses an environmental problem on the grounds that the discarded file folder of the prior art cannot be economically recycled.
BRIEF SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a loose-leaf file folder which is free of the deficiencies of the prior art loose-leaf file folder described above.
In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by a loose-leaf file folder comprising two covers, a spine located between the two covers and made integrally with the two covers, and a paper-retaining structure enabling papers, cards, etc. to be easily removed, replaced or put back in place. The paper-retaining structure comprises a plurality of paper-holding sets, each being formed of a shaft, a paper-holding stem, and a crossbar. The shaft and the stem are integrally made with the covers and are uprightly projected from a margin of one of the two covers. The shaft and the stem are provided in the top end with a retaining hole. The crossbar is provided at the two longitudinal ends with a retaining arm. The crossbar is removably joined with the shaft and the stem such that one retaining arm of the crossbar is removably retained in the retaining hole of the shaft, and that the other retaining arm of the crossbar is removably retained in the retaining hole of the stem.


REFERENCES:
patent: 944653 (1909-12-01), Bayles
patent: 1094019 (1914-04-01), Reifel et al.
patent: 2376423 (1945-05-01), Evans
patent: 3262454 (1966-07-01), Shillinger
patent: 4340316 (1982-07-01), Jahn
patent: 5405209 (1995-04-01), Johns et al.
patent: 5690443 (1997-11-01), Sullivan
patent: 6565278 (2003-05-01), Paine et al.

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