Film cartridge with exposed-film indicator

Details Film cartridge with exposed-film indicator Film cartridge with exposed-film indicator

1995-01-03

1996-05-14

Gellner, Michael L.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242348, G03B 1726, G03B 2302

Patent

active

055172687

ABSTRACT:
A film cartridge has a folded-over tab protruding from a film egress slot, which is unfolded by a film leader moving outwardly through the slot. The unfolded tab provides a visible indication of film use. In an alternate embodiment, the tab is an integral extension of a light-trapping plush that lines the film egress slot.

REFERENCES:
patent: 4335948 (1982-06-01), Cocco
patent: 4860037 (1989-08-01), Harvey
patent: 4887110 (1989-12-01), Harvey
patent: 4903053 (1990-02-01), Harvey
patent: 4931819 (1990-06-01), Atkinson et al.
patent: 5255039 (1993-10-01), Miller
patent: 5264886 (1993-11-01), Byrd
patent: 5296887 (1994-03-01), Zander

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