Film cartridge with film-exposed visual indicator

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

1996-04-03

1998-02-03

Metjahic, Safet

Photography

Camera detail

Detachable or removable film holder unit

G03B 1726

Patent

active

057154945

ABSTRACT:
A film cartridge comprising a rotatable film spool, an indicator window, an annular indicator wheel rotatable behind the indicator window to move a film-exposed indication on the indicator wheel to the indicator window, and an annular drive wheel rotatably coupled with the film spool for rotating the indicator wheel to move the film-exposed indication to the indicator window, is characterized in that the indicator wheel is resilient and a flex-inducing protuberance is located to distort successive portions of the indicator wheel towards the indicator window as the indicator wheel is rotated, to position the film-exposed indication in the indicator window.

REFERENCES:
patent: 4978985 (1990-12-01), Smart et al.
patent: 5030978 (1991-07-01), Stoneham et al.
patent: 5106030 (1992-04-01), Pagano et al.
patent: 5115268 (1992-05-01), Kitagawa et al.
patent: 5278600 (1994-01-01), Takahashi et al.
patent: 5384613 (1995-01-01), Cloutier et al.
patent: 5552849 (1996-09-01), DiRisio et al.

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