Camera electric shutter with mechanical delay device

Details Camera electric shutter with mechanical delay device Camera electric shutter with mechanical delay device

1974-08-02

1977-09-27

Hix, L. T.

354258, 354267, G03B 958, G03B 1740

Patent

active

040514986

ABSTRACT:
An electric shutter in which an electrical circuit normally controls the automatic closing of the shutter lens aperture. A mechanical device in the shutter coactive with the electrical circuit closes the shutter lens aperture mechanically, automatically when the electrical circuit is deenergized or because insufficiently energized because of an exhausted power source or because of other reasons.

REFERENCES:
patent: 3645185 (1972-02-01), Kitai
patent: 3650193 (1972-03-01), Shimuzu
patent: 3670635 (1972-06-01), Ort
patent: 3763757 (1973-10-01), Hayami et al.
patent: 3785264 (1974-01-01), Loseries et al.
patent: 3821757 (1974-06-01), Kobori
patent: 3925799 (1975-12-01), Nakatani
patent: 3927416 (1975-12-01), Inoue

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