Camera having motor-driven film wind and rewind system

Details Camera having motor-driven film wind and rewind system Camera having motor-driven film wind and rewind system

1985-11-29

1987-11-17

Perkey, W. B.

354484, 35417311, G03B 118, G03B 726

Patent

active

047071044

ABSTRACT:
A motor-driven camera comprising a film winding and rewinding mechanism operable by a starter switch, and a low power consumption type memory unit. The film winding and rewinding mechanism include a transmission changeover gear. For sliding this gear a motor is rotated backward once to eliminate a contact between teeth of the changeover gear and a drive gear operatively connected to the motor. The memory unit includes a flip-flop memory circuit and a switching circuit. The memory circuit shifts from a first state to a second state and remains in the second state when the starter switch is closed. In the second state the memory circuit outputs an operation signal to a transmission mechanism control unit, and returns to the first state upon receipt of a signal output by the control unit when an operation is completed. The switching circuit performs a positive feedback function with respect to the closure of the starter switch.

REFERENCES:
patent: 4572637 (1986-02-01), Inoue

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