Multipurpose film cassette having a processor disabling valve re

Details Multipurpose film cassette having a processor disabling valve re Multipurpose film cassette having a processor disabling valve re

1977-04-26

1978-08-08

Hayes, Monroe H.

Optics: motion pictures

Removable film strip magazine type

352130, G03D 500

Patent

active

041060423

ABSTRACT:
Apparatus is provided for retaining a slideably displaceable valve member in its initial position prior to displacement of the valve to a final position responsive to film movement in a multipurpose film cassette of the type containing a film strip for exposure, processing and viewing without removal from the cassette. A leaf spring member forming a part of the valve member is configured to engage a ramped wall in the cassette housing. The spring force and friction between the spring member and the ramped wall tend to retain the slide valve positively in position until the valve is engaged by the film strip and moved to its final position wherein it seals off the processing fluid nozzle upon termination of the processing mode of operation of the cassette.

REFERENCES:
patent: 3615127 (1971-10-01), Land
patent: 3623417 (1971-11-01), Eloranta et al.
patent: 3748994 (1973-07-01), Stella
patent: 3938885 (1976-02-01), Scholz

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