Film detecting device in automatic film winding type camera

Details Film detecting device in automatic film winding type camera Film detecting device in automatic film winding type camera

1981-10-28

1984-04-24

Mathews, A. A.

354212, G03B 100

Patent

active

044444826

ABSTRACT:
A camera device for controlling a motor-driven, automatic film winder which winds unexposed film in a camera includes first and second electrical contacts disposed on opposite sides of a film path for detecting the absence of film in the film path. The contacts are connected to a motor drive circuit for the automatic film winder so that the automatic film winder is disabled when the absence of film is detected. The first contact is disposed in an aperture in a film pressure plate, and the film pressure plate is urged towards a rear camera portion by a spring.

REFERENCES:
patent: 3205507 (1965-09-01), Hochstein
patent: 3598033 (1971-08-01), Sasaki
patent: 3878546 (1975-04-01), Adamski
patent: 4171893 (1979-10-01), Kawazoe
patent: 4196993 (1980-04-01), Stemme et al.

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