Photographic film drive system employing inertia dumper

Details Photographic film drive system employing inertia dumper Photographic film drive system employing inertia dumper

1974-05-15

1976-03-30

Hix, L. T.

Optics: motion pictures

Removable film strip magazine type

352173, 242205, G03B 140

Patent

active

039471870

ABSTRACT:
Photographic processing and projector apparatus having a drive system including a gear train for advancing and rewinding the film on spools within a film cassette. Included in the gear train is an inertia dumper which is operative at the conclusion of a high speed rewind run to reduce film tension and cassette shock caused by the abrupt cessation of film movement at the end of the film.

REFERENCES:
patent: 2912178 (1959-11-01), Schuyler
patent: 3514197 (1970-05-01), Sho
patent: 3643469 (1972-02-01), Enomoto
patent: 3719335 (1973-03-01), Kurasawa

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