Focal plane shutter for cameras

Details Focal plane shutter for cameras Focal plane shutter for cameras

1974-08-29

1977-05-17

Adams, Jr., Russell E.

354246, 354248, G03B 938

Patent

active

040245551

ABSTRACT:
A focal plane shutter for cameras comprising two sets of shutter blades each of which comprises a plural number of opaque thin plates supported by two supporting arms, a partition plate for separating said two sets of shutter blades from each other, a pair of retaining plates for forming spaces between respective retaining plates and said partition plate for the purpose of housing said two sets of shutter blades separately from each other in said spaces, and an exposure aperture having opposing sides cut in a shallow V-shape. The overall size of said focal plane shutter small, and the shutter blades are moved smoothly at the time of operation without causing jamming or collision of the shutter blades.

REFERENCES:
patent: 3078776 (1963-02-01), Okabe
patent: 3391627 (1968-07-01), Leuschke
patent: 3580156 (1971-05-01), Loseries
patent: 3628438 (1971-12-01), Loseries
patent: 3829878 (1974-08-01), Onda et al.
patent: 3834802 (1974-09-01), Kitai et al.
patent: 3842429 (1974-10-01), Kitai et al.
patent: 3852786 (1974-12-01), Onda et al.
patent: 3871012 (1975-03-01), Haraguchi

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