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:
Oct. 30, 1984
Filed:
Jan. 19, 1983
Applicant:
Inventors:
Hideo Tamamura, Tokyo, JP;
Mutsuhide Matsuda, Kanagawa, JP;
Toyotosi Suzuki, Tokyo, JP;
Takashi Endo, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ;
U.S. Cl.
CPC ...
3541731 ; 354213 ;
Abstract
A spool drive type camera in which the taking up of the film is carried out only by the rotative force of the spool, while the one-frame advancement of the film is controlled by the revolution of the sprocket as it is driven by the film transportation is provided with automatic switching means for selection of a mode in which the above-described one-frame advancement is effected by the rotative force of the winding up system when a film is not loaded in the above-described camera.