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. 14, 1981
Filed:
Jan. 23, 1979
Applicant:
Inventors:
Fumio Ito, Yokohama, JP;
Isao Harigaya, Yokohama, JP;
Tetsuya Taguchi, Kawasaki, JP;
Shuichi Tamura, Yokohama, JP;
Michio Hirohata, Kawasaki, JP;
Mutsuhide Matsuda, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ; G03B / ; H01H / ;
U.S. Cl.
CPC ...
354 51 ; 354 53 ; 354234 ; 354289 ; 354173 ; 361159 ;
Abstract
The present invention is directed to an operation detecting device of a camera for detecting the operation of an operation member such as the shutter member. The operation detecting device functions by detecting the electrical signal produced at the time at which a closed magnetic circuit is opened when a magnet operates so as to actuate or release the operation member.