Camera with motor driven transmission mechanism

Details Camera with motor driven transmission mechanism Camera with motor driven transmission mechanism

1994-09-20

1997-02-11

Metjahic, Safet

Photography

Having variable focal length of camera objective

Power zoom

396411, 396418, 396435, 396349, G03B 140, G03B 3700, G03B 118

Patent

active

056026080

ABSTRACT:
A camera includes a body drive motor for driving forwardly or backwardly, a first planetary gear mechanism for selecting whether the output from the motor should be transmitted to a zooming device, a prohibition device for prohibiting the rotation of the planetary gear mechanism after the first planetary gear mechanism has completed the selection, a second planetary gear mechanism for selecting whether the output from the first planetary gear mechanism, which was not transmitted to the zooming device, should be transmitted to a winding device, and a third planetary gear mechanism for transmitting the output from the second planetary gear mechanism, which was not transmitted to the winding device, should be transmitted to either the rewinding device or a photographic image-plane size switching device. The planetary gear mechanism is rotated at a low speed so that the output of the first planetary gear mechanism does not exert an influence upon the second planetary gear mechanism when the driving force of the motor is switched from the zooming device to the photographic image-plane size switching device.

REFERENCES:
patent: 5010357 (1991-04-01), Misawa
patent: 5138352 (1992-08-01), Maeno
patent: 5365301 (1994-11-01), Sugita et al.
patent: 5373336 (1994-12-01), Sugita
patent: 5404191 (1995-04-01), Kashiyama et al.

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