The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 19, 1996
Filed:
Dec. 15, 1994
Katsuhiko Tsunefuji, Sagamihara, JP;
Takashi Watanabe, Akishima, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
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.