Slide file sheet

Details Slide file sheet Slide file sheet

1979-02-22

1980-06-17

Dixson, Jr., William T.

Special receptacle or package

For plate or sheet

Fragile or sensitive

206564, B65D 136, B65D 8548

Patent

active

042079802

ABSTRACT:
A slide file sheet includes a plurality of rectangular recesses formed by longitudinally and traversely extending bounding walls for arranging a plurality of slide films therein and holding lugs extending from side walls of the bounding walls inwardly of the rectangular recesses for holding the slide films.
The file sheet according to the invention comprises first draft channels formed in the bounding walls and in support portions for supporting mounts of the slide films for communicating the spaces on the upper surfaces of the slide films with those on the lower surfaces of the films, and second draft channels formed in the support portions for communicating the spaces on the lower surfaces of the films with punched openings below the holding lugs when the slide films are held within the rectangular recesses.
In projecting the slide films arranged and held in the file sheet by the use of a projector, the first and second draft channels cause the air to flow through these channels to cool the films, thereby preventing the deformation and discoloration of the films, which would otherwise occur due to radiation heating of a light source of the projector, thereby always providing clear images on a screen.

REFERENCES:
patent: 2941663 (1960-06-01), Ettlinger, Jr.
patent: 2968882 (1961-01-01), Ozeki
patent: 3802555 (1974-04-01), Grasty et al.
patent: 4085845 (1978-04-01), Perfect

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