Apparatus for feeding photographic film having two perforations

Details Apparatus for feeding photographic film having two perforations Apparatus for feeding photographic film having two perforations

1994-07-15

1995-04-25

Gellner, Michael L.

G03B 118

Patent

active

054103800

ABSTRACT:
A film feeding apparatus of a camera using a film having two perforations in each frame. A perforation detecting lever has claws spaced at a predetermined distance apart from each other so that the distance therebetween is equal to the distance between the two perforations which are adjacent to each other across the boundary between frames. The perforation detecting lever engages the perforations and disengages therefrom in unison with an operation for feeding one frame to be performed after the proceeding frame is exposed to light. As a result, film feeding is allowed to proceed until both claws simultaneously engage two respective perforations in the film which occurs after the film has advanced one frame.

REFERENCES:
patent: Re31516 (1984-02-01), Tanaka
patent: 3665830 (1972-05-01), Maeda
patent: 3852792 (1974-12-01), Nikitsch et al.
patent: 4221478 (1980-09-01), Karikawa
patent: 4236800 (1980-12-01), Satoh
patent: 4903061 (1990-02-01), Harvey
patent: 4914462 (1990-04-01), Pagano
patent: 4980710 (1990-12-01), Harvey
patent: 5023640 (1991-06-01), Diehl

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