Multipurpose film cassette having balanced force process mode sw

Details Multipurpose film cassette having balanced force process mode sw Multipurpose film cassette having balanced force process mode sw

1979-08-06

1981-11-17

Hayes, Monroe H.

Optics: motion pictures

With film treating or working

352 72, 352 78R, G03C 1100

Patent

active

043008224

ABSTRACT:
A multipurpose film handling cassette of the type in which a photographic film strip is exposed, processed and projected without removal of the film from the cassette is provided with a two-piece "balanced force" arrangement for signaling to the apparatus with which it is to be used the unprocessed or processed condition of the film within the cassette. By "balanced force" it is meant that the indicating elements do not rely on any inherent deformation or internal resiliency to move the elements from an unprocessed mode to the processed mode. Further, no external force is required to act upon the terminals to hold them in a desired position.

REFERENCES:
patent: 3778140 (1973-12-01), Land
patent: 3785725 (1974-01-01), Batter et al.
patent: 4003064 (1977-01-01), Mason

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