Film transport device of camera

Details Film transport device of camera Film transport device of camera

1994-12-15

1996-11-19

Gray, David M.

Photography

With film drive

Mechanical detail

G03B 118

Patent

active

055767842

ABSTRACT:
In order to smoothly feed out, wind and rewind a film housed in a film patrone with a simple construction by rotating a spool shaft in the film patrone in correlation to the forward and backward rotation of a motor, a film transport device of a camera comprises a motor for producing an output for feeding and winding the film, a motor shaft for transmitting the output from the motor, a planetary gear mechanism serves as a differential gear mechanism for transmitting the output of the motor shaft to the spool shaft in the film patrone, and a planetary clutch mechanism as a transmission mechanism. When the spool shaft in the film patrone is driven by the film wound on the wind spool, a differential operation performed by the differential gear mechanism prevents the speed-up rotation of the motor shaft.

REFERENCES:
patent: 5075707 (1991-12-01), Shibayama et al.
patent: 5221940 (1993-06-01), Daitoku et al.
patent: 5437416 (1995-08-01), Ezawa et al.

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