Focal plane shutter

Details Focal plane shutter Focal plane shutter

1978-01-05

1980-09-02

Hix, L. T.

354249, G03B 940

Patent

active

042204097

ABSTRACT:
In each of the opening group and the closing group of shutter blades, there is a main blade and two auxiliary blades. When developing from a folded condition the blades of each group go from a more overlapped to a less overlapped condition. Although the same two springs may provide all three of the blades of a group with motive force for moving from the cocked to the uncocked condition, the two auxiliary blades have a driving force transmitter that is independently movable to a limited degree relative to the driving force transmitter for the main blade of the same group, one of the springs directly transmits force for moving the main blade and the other spring directly transmits force for moving the auxiliary blades.

REFERENCES:
patent: 3532046 (1970-10-01), Wienchol

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