Single actuator for motor control in a camera

Details Single actuator for motor control in a camera Single actuator for motor control in a camera

1998-03-05

1999-08-31

Blankenship, Howard B.

Photography

With film drive

Film transport cocks shutter

396403, 396418, G03B 1742

Patent

active

059465115

ABSTRACT:
An actuator mechanism of simple and inexpensive design is incorporated in a camera structure to control a motor advance film winding system. The actuator includes a metering mechanism interface, a motor activation switch interface, and a shutter mechanism interface. In operation, a metering mechanism of a camera contacts with the metering mechanism interface in an exposure ready state to hold the actuator in an initial position in which the motor activation switch interface interfaces with a moveable contact of a motor switch to prevent contact between the moveable contact and a stationary contact of the motor switch. When a shutter mechanism of the camera is depressed, the shutter mechanism interfaces with the shutter mechanism interface to hold the actuator in the initial position and also moves the metering mechanism out of contact with the metering mechanism interface. The actuator moves to the contact position when the shutter mechanism is released, thereby causing the motor of the camera to be activated to advance the film. The advancement of the film resets the metering mechanism to the exposure ready state such that the actuator is returned to the initial position and the motor is deactivated.

REFERENCES:
patent: 3995292 (1976-11-01), Kondo
patent: 4256394 (1981-03-01), Haraguchi et al.
patent: 4637702 (1987-01-01), Kazami et al.
patent: 5617164 (1997-04-01), Siekierski et al.

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