Electromagnetically releasable shutter for a camera

Details Electromagnetically releasable shutter for a camera Electromagnetically releasable shutter for a camera

1985-04-22

1987-03-17

Griffin, Donald A.

G03B 908

Patent

active

046503064

ABSTRACT:
An electromagnetically releasable shutter for a camera comprises an electromagnet (8) which is energized upon the execution of shutter releasing operation and de-energized after an exposure time corresponding to the brightness of the object has elapsed since energization, an armature lever (7) which is driven by the electromagnet (8), an actuating member (4) which starts moving to drive a diaphragm operating member (6) in a direction to open the diaphragm when the armature lever (7) is attracted by the electromagnet (8), and a shutter closing member (9) which drives the diaphragm operating member (6) in a direction to close the diaphragm when the armature lever (7) is released from the electromagnet (8). The actuating member (4) is provided with a part to restrain the operation of the shutter closing member (9) when the actuating member (4) is at the charged position. The armature lever (7) is provided with a part which enters the range of movement of the shutter closing member (9) to restrain the operation of the shutter closing member (9).

REFERENCES:
patent: 4208111 (1980-06-01), Kitai et al.

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