Shutter blade assembly for focal plane shutters

Details Shutter blade assembly for focal plane shutters Shutter blade assembly for focal plane shutters

1976-05-04

1977-12-13

Griffin, Donald A.

G03B 920

Patent

active

040632628

ABSTRACT:
A shutter blade assembly wherein, in order to make the dimension of the focal plane shutter as small as possible, particularly in the vertical direction, a substantially rectangular main shutter blade for forming an exposure slit is pivotally connected at an end edge portion, located on the side of the shutter, to the ends of a pair of arms which are pivoted at their opposite ends to one side of an exposure aperture. The dimension in the vertical direction of the end edge portion is made larger than the dimension in the vertical direction of the remainder of the shutter blade. A plurality of auxiliary shutter blades for covering the exposure aperture are supported by being respectively pivoted at end edge portions to the arms adjacent the points of pivoting of the main shutter blade to the pair of arms.

REFERENCES:
patent: 3628438 (1971-12-01), Loseries
patent: 3903539 (1975-09-01), Kitai et al.

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