Automatic stop motion device in a motor drive camera

Details Automatic stop motion device in a motor drive camera Automatic stop motion device in a motor drive camera

1977-04-21

1978-10-24

Gellner, Michael L.

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

318345B, G03B 118, H02P 536

Patent

active

041224710

ABSTRACT:
An automatic stop motion device in a motor drive camera includes a motor for effecting film winding, a power supply including a battery for supplying a current to the motor, a time measuring circuit for measuring the time during which the current is supplied to the motor and for putting out a signal corresponding to the time, and a detector for detecting when the output signal of the time measuring circuit has reached a predetermined value, thereby judging the state of impossibility of film winding and cutting off the supply of current to the motor.

REFERENCES:
patent: 3940776 (1976-02-01), Kondo

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