Focal plane shutter for cameras

Details Focal plane shutter for cameras Focal plane shutter for cameras

1986-06-13

1987-12-22

Mathews, A. A.

354249, G03B 940

Patent

active

047143363

ABSTRACT:
A focal plane shutter for cameras wherein a plurality of shutter blades to open and close an exposure aperture are shared and pivoted by three arms pivoted on a base plate to secure an excellent durability even for a high speed operation. One of the three arms is pivoted on the base plate by fitting a bearing sleeve calked to the arm to a shaft standing on the base plate and the other two arms are pivoted on the base plate by fitting holes made in the respective arms to respective shafts standed on the base plate.

REFERENCES:
patent: 4024555 (1977-05-01), Inoue
patent: 4231650 (1980-11-01), Saito et al.
patent: 4493544 (1985-01-01), Uematsu

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