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:
Jul. 31, 1990
Filed:
Apr. 05, 1989
Takahisa Shimada, Osaka, JP;
Hideo Kajita, Osaka, JP;
Sueyoshi Okumura, Osaka, JP;
Reiji Seki, Osaka, JP;
Toshihiko Ishimura, Osaka, JP;
Sinji Katayori, Osaka, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
A film rewinding system, of camera, capable of automatically rewinding a film roll which is wound by film winding apparatus comprising, an electrical motor, a film winding device driven by the motor, a lock mechanism associated with the film winding device, for locking the winding device every time feed of a frame of the film roll is completed, and a dis-lock mechanism having a dis-lock lever for releasing a locked state of the winding device for feeding the film roll, while the dis-lock lever is located at a neutral position during one-frame feeding and a magnet unit for holding the dis-lock lever at the neutral position, the system comprising: a film rewinding device driven by the motor; a switch operating on and off several times during the one-frame feeding, which is associated with the winding device and operates during film travelling; and a controller which controls the film rewinding device and the magnet unit with a predetermined routine. The system operates as follows. A locking operation of the lock mechanism to the film rewinding system does not operate, at least, during a period from initiation of an operation of film rewinding through completion of one-frame rewinding of the film roll, on the occasion of the film rewinding.