Photographic shutter

Details Photographic shutter Photographic shutter

1979-10-11

1981-10-20

Hix, L. T.

G03B 934

Patent

active

042957257

ABSTRACT:
The photographic shutter has two curtains cut out of a sheet of synthetic material. The flexible return of the curtain is ensured by two drum springs engaging with pinions carried by the end of the rollers. The setting of the shutters may be effected by wheels which may be completely disconnected from the setting mechanism. Release may be effected electrically by electro-magnets.

REFERENCES:
patent: 3739704 (1973-06-01), Akiyama
patent: 3744392 (1973-07-01), Dahlgren et al.
patent: 4053913 (1977-10-01), Sato
patent: 4109265 (1978-08-01), Hashimoto
patent: 4123766 (1978-10-01), Hasegawa

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