Automatic film wind up device for a camera

Details Automatic film wind up device for a camera Automatic film wind up device for a camera

1976-09-23

1978-08-29

Gonzales, John

192 clutches and power-stop control

Elements

Wear compensators

192 02R, 192150, 318466, 335205, G03B 118

Patent

active

041107683

ABSTRACT:
In an automatic film wind up device including a drive disc driven by an electric motor and a driven disc connected to a film wind up shaft and rotated by the drive disc, the drive and driven discs are provided with a position detecting elements which detects a predetermined relative position of one disc to the other. The position detecting elements are electric non-contact type switch elements comprised of two elements one of which is mounted on the drive disc and the other of which is mounted on the driven disc. Only when the two elements are in alignment with each other, the motor is driven. The drive and driven discs are coupled together by means of a clutch or a click stop device and are disengaged from each other when the driven disc is forced to stop. Upon the stoppage of the driven disc, the detecting elements detects the disengagement of the discs and act to stop the motor.

REFERENCES:
patent: 3448670 (1969-06-01), Suzuki
patent: 3895389 (1975-07-01), Arai

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