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US 4,362,374 AGranted
Focal plane shutter winding mechanism
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorHaruo Ishii
Life of this patent
Estimating the term…
Abstract
A shutter winding mechanism utilizes a flexible ribbon to rotate the top curtain drum. The ribbon preferably coupled to a reduced diameter cylindrical portion on the top curtain drum is connected at its other end to a shutter winding plate which is rotatable with the shutter winding lever.
Claims7
In a focal plane shutter mechanism of the type having a top curtain biased for movement in a shutter curtain running direction and a top curtain drum on which said top curtain is to be wound, a shutter winding mechanism comprising:
- a shutter winding plate;
- means for rotating said shutter winding plate in a shutter winding direction;
- and
- a flexible ribbon coupling said shutter winding plate and said top curtain drum for rotating said top curtain drum to wind said top curtain when said shutter winding plate is rotated in said shutter winding direction.
1 more element
Dependencies are inferred from the claim text.