US 4,903,059 A · Camera

Abstract

A camera is disclosed which is capable of winding and rewinding a film and adjusting a focal distance by use of a single motor. In the camera, the forward rotation of the motor is used to wind the film, and when the film winding operation is completed after termination of photographing, on detecting the end of the film, a torque detect mechanism switches a planetary clutch mechanism to connect the motor with a film rewinding mechanism. Thus, it is possible to perform both the film winding and rewinding operations by use of the rotation of the motor in the same direction. Also, when, with the planetary clutch mechanism connected with the film winding mechanism, the motor is rotated reversely, then the power transmission system is switched over to a focal distance varying mechanism, whereby the focal distance can be adjusted.

Claims10

Dependent claims

A camera comprising:

a film winding mechanism for drawing out a film from a patrone to wind the same around a spool;
a film rewinding mechanism for rewinding said film from said spool into said patrone;
a first planetary clutch mechanism for transmitting rotational power from a motor to said film winding mechanism or to said film rewinding mechanism by rotation of said motor in the same direction during film winding as during film rewinding;
an engagement member for holding said first planetary clutch mechanism in such a manner that said first planetary clutch mechanism can be connected with said film winding mechanism;
and,
a torque detect mechanism which is operative, upon detecting a given torque at the end of winding of the whole film, to drive said engagement member to release the holding of said first planetary clutch mechanism by said engagement member so as to connect said first planetary clutch mechanism with said film rewinding mechanism.

3 more elements

Dependencies are inferred from the claim text.

Camera

Life of this patent

Camera

Life of this patent

Abstract

Claims10