Patent
1995-07-27
1996-08-20
Gellner, Michael L.
354105, G03B 1726
Patent
active
055483682
ABSTRACT:
A film spool of the type which is rotatable inside a light-tight cassette shell as a film strip coiled about the spool is pulled out of the shell, has a film exposure status indicator movable from a first position to a second position where it provides a visible indication that the film is completely exposed. The status indicator includes an element movable within the hollow interior of the spool core between the first and second positions, a spring urging the element towards the second position, and a retaining device cooperating with an end portion of the film strip to prevent movement of the element until the film strip has been fully unwound.
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Lee Bernard W. N.
Tutton John
Chizmar John
Gellner Michael L.
Lee Bernard W. N.
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