Focal plane shutter device

Details Focal plane shutter device Focal plane shutter device

1980-06-23

1981-05-19

Griffin, Donald A.

354246, 354252, G03B 1503, G03B 908, G03B 940

Patent

active

042681472

ABSTRACT:
A focal plane shutter device of the present invention is provided with leading blade braking means arranged near the terminal end of running down movement of the leading blades of the focal plane shutter to stop said leading blades in a standstill position either directly or through a member cooperative with the leading blades, and brake releasing means arranged in the trailing blades of the shutter upon termination of running down movement of the trailing blades to release the above-described leading blade braking means. Another feature is that the member cooperative with the leading blades in the standstill position and the braking member form a synchro-contact for use in flash photography.

REFERENCES:
patent: 3974511 (1976-08-01), Matsumoto
patent: 4023192 (1977-05-01), Simon et al.
patent: 4024550 (1977-05-01), Yazaki et al.
patent: 4054892 (1977-10-01), Nakagawa et al.
patent: 4139295 (1979-02-01), Matsumoto

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