Safety mechanism for cameras

Details Safety mechanism for cameras Safety mechanism for cameras

1977-11-30

1979-11-13

Gellner, Michael L.

354207, 354266, G03B 1738, G03B 1742

Patent

active

041741684

ABSTRACT:
A camera adapted to receive film perforated at predetermined metering intervals, is provided with electromagnetic shutter release means which includes switch means for preventing double exposure. The switch means permits shutter release operation when the camera is not loaded with film as well as when a fresh film frame is in registry with the camera exposure area. In preferred embodiments, the switch means may be operated by a film perforation sensing mechanism and/or film cartridge sensing means.

REFERENCES:
patent: 3142238 (1964-07-01), Hofmann et al.
patent: 3590710 (1971-07-01), Uno et al.
patent: 3820142 (1974-06-01), Beach
patent: 3878546 (1975-04-01), Adamski

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