Motor drive means for motor driven single lens reflex camera

Details Motor drive means for motor driven single lens reflex camera Motor drive means for motor driven single lens reflex camera

1976-09-08

1978-02-21

Hix, L. T.

354213, G03B 118

Patent

active

040756440

ABSTRACT:
An electric switch means for turning on and off a film wind-up motor in a single lens reflex camera is provided in a camera. The switch means is operated to start the motor upon supply of electric power to the camera or upon turning off of a solenoid provided in the camera for swinging up a mirror. The switch means is connected with a film perforation detecting device so that the switch is operated to stop the motor when the detecting device detects a perforation in the film. The film has one perforation per frame. Further, a timer is connected between the switch means and the motor to stop the motor when a time determined by the timer has lapsed for feeding the trailing portion of the film and stopping the film after the trailing portion is completely wound up.

REFERENCES:
patent: 3656420 (1972-04-01), Aizawa et al.
patent: 3754455 (1973-08-01), Tsujimoto et al.
patent: 3913115 (1975-10-01), Mueller et al.
patent: 4015198 (1977-03-01), Iwashita et al.

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