Patent
1978-10-26
1980-01-22
Griffin, Donald A.
354239, G03B 1738, G03B 964
Patent
active
041847610
ABSTRACT:
An exposure control device for the shutter of a camera wherein an opening member opens the aperture of the shutter to start exposure, a closing member closes the aperture to complete exposure, an opening hook and a closing hook retain at a charged position the opening member and the closing member, respectively. A control member is released by shutter release operation to control the exposure time by shutter release operation to control the exposure time and to successively release said opening member and said closing member. A governor delays the motion of said control member in proportion to desired exposure times. An interlocking lever is adjustable to a first range where it is actuated by the movement of the control member to push the closing hook and to a second range where it is actuated by the movement of the opening member to push the closing hook. An adjusting lever supports the interlocking lever operable within the first and second ranges. A cam member changesover the adjusting lever in proportion to the desired exposure time.
REFERENCES:
patent: 3825940 (1974-07-01), Hayami
patent: 3893143 (1975-07-01), Taguchi et al.
patent: 3945026 (1976-03-01), Hayami
patent: 4047211 (1977-09-01), Inoue et al.
patent: 4069491 (1978-01-01), Scholz
Nakagawa Tadashi
Nemoto Ichiro
Adams Bruce L.
Burns Robert E.
Griffin Donald A.
Lobato Emmanuel J.
Seiko Koki Kabushiki Kaisha
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