1975-07-03
1977-10-18
Gonzales, John
354 86, 354173, 354230, G03B 1750, G03B 118, G03B 900
Patent
active
040548899
ABSTRACT:
A motor-driven apparatus for use in a camera equipped with a shutter device which is normally maintained in a close position after the termination of an exposure and adapted to be shifted to an open position in response to the shutter release operation, comprises a motor for driving the film; a switch opened during the transportation of the film and closed upon the termination of the transportation of the film; an electric circuit for producing signals only when the shutter device is shifted from the open position to a closed position; and a semi-conductor control circuit connected in series with the switch between the motor and the cells, the semi-conductor control circuit being rendered conductive by signals from the electric circuit and rendered non-conductive when the switch is opened.
REFERENCES:
patent: 3750551 (1973-08-01), Land et al.
patent: 3754455 (1973-08-01), Tsujimoto
patent: 3763755 (1973-10-01), Kuramoto
patent: 3893136 (1975-07-01), Ando et al.
patent: 3967304 (1976-06-01), Johnson et al.
Gonzales John
Minolta Camera Kabushiki Kaisha
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