Apparatus and method for stopping film advance

Details Apparatus and method for stopping film advance Apparatus and method for stopping film advance

1995-01-09

1996-04-16

Hayes, Monroe H.

G03B 100

Patent

active

055087710

ABSTRACT:
An apparatus for stopping photographic film advance upon encountering an end-of-roll perforation at the end of a roll of film. In one embodiment, the apparatus includes a camera body defining a film track for slidably receiving film, a camming member movably positioned adjacent the film track and including an engaging finger, and a load spring. The load spring positions the engaging finger in a first position out of the film track when film is absent from the film track, and further biases the engaging finger into a second position into engagement with film in the film track. The engaging finger is designed to move to a third position, via force form the load spring, into an aligned end-of-roll perforation in the film to inhibit film advancement.

REFERENCES:
patent: 3688668 (1972-09-01), Ort
patent: 4914462 (1990-04-01), Pagano
patent: 5008692 (1991-04-01), Diehl et al.

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