Motor driven system for controlling the diaphragm and shutter of

Details Motor driven system for controlling the diaphragm and shutter of Motor driven system for controlling the diaphragm and shutter of

1992-11-04

1994-07-05

Gellner, Michael L.

3542341, G03B 908

Patent

active

053271858

ABSTRACT:
A motor driven shutter has diaphragm blades and shutter blades controlled by a single motor. The shutter comprises a driving member actuated by the motor, a diaphragm member for setting the diaphragm blades to a predetermined position via the driving member by the forward rotation of the motor, a closing member for operating the diaphragm blades to a closed position, and shutter blades urged in an open direction. The driving member sets the diaphragm blades to a predetermined position and further releases the shutter blades upon motor rotation in the reverse direction in a diaphragm setting process. The driving member closes the diaphragm blades by releasing the engagement of the closing member in the succeeding operation of the motor.

REFERENCES:
patent: 4881096 (1989-11-01), Ogihara et al.
patent: 4933695 (1990-06-01), Ishida et al.
patent: 5045873 (1991-09-01), Shinozaki et al.
patent: 5060000 (1991-10-01), Ogihara et al.
patent: 5150149 (1992-09-01), Alligood et al.

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