Cartridge for audio-visual projectors

Details Cartridge for audio-visual projectors Cartridge for audio-visual projectors

1975-02-24

1976-11-30

Hayes, Monroe H.

Optics: motion pictures

With nonrewinding film strip

Coil type

352 72, 242 5519A, G03B 2100

Patent

active

039945774

ABSTRACT:
A film cartridge for audio-visual projectors comprising a concavity portion provided in a part of a side wall thereof and capable of cooperating with a sprocket means provided on a projector body to run the endless film in the cartridge, and a groove formed in a part of a peripheral edge thereof to contain a film loop to be formed by a loop setting means provided in the projector body, thereby to simplify the entire structure of the film cartridge.

REFERENCES:
patent: 3244470 (1966-04-01), Hennessey
patent: 3271096 (1966-09-01), Blackmore
patent: 3350025 (1967-10-01), Lear
patent: 3464765 (1969-09-01), Broeckl
patent: 3871754 (1975-03-01), Procop

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