Patent
1976-04-15
1981-04-28
Griffin, Donald A.
G03B 936
Patent
active
042641772
ABSTRACT:
A focal plane shutter for a camera of the type wherein an image is viewed through the photographing lens by use of a viewfinder arranged on top of the camera body. The shutter blade mechanism comprises a group of opening blades and a group of closing blades, each group of blades consisting of a plurality of separate blades which are actuated to run in the vertical direction of the camera for exposing the film. The lower group of blades has a larger vertical dimension when in the retracted condition than the upper group of blades and such is achieved by using a different number or different size of blades in the two blade groups. In both groups, the slit-forming blades are mounted by means of a link mechanism to effect parallel running movement of the blades. The pivot shafts for mounting the slit-forming blades are disposed at a position outside of the region lying vertically below the viewfinder.
REFERENCES:
patent: 3035502 (1962-05-01), Renner et al.
patent: 3628434 (1971-12-01), Leitz et al.
patent: 3628438 (1971-12-01), Loseries
patent: 3810224 (1974-05-01), Kitai et al.
patent: 3834802 (1974-09-01), Kitai et al.
patent: 3854144 (1974-12-01), Onda et al.
patent: 3967290 (1976-06-01), Waaske
patent: 3987471 (1976-10-01), Adamski
patent: 3988754 (1976-10-01), Rentschler et al.
patent: 4024555 (1977-05-01), Inoue
Kitai Kiyoshi
Onda Eiichi
Watanaba Masanori
Adams Bruce L.
Burns Robert E.
Griffin Donald A.
Lobato Emmanuel J.
Seiko Koki Kabushiki Kaisha
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