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:
Jun. 15, 1982
Filed:
Jul. 06, 1981
Applicant:
Inventors:
Fumio Shimada, Kawasaki, JP;
Teiji Hashimoto, Kawasaki, JP;
Assignees:
Canon Kabushiki Kaisha, Tokyo, JP;
Canon Denshi Kabushiki Kaisha, Saitama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ; G03B / ;
U.S. Cl.
CPC ...
354147 ; 354246 ; 354252 ;
Abstract
A device for preventing spring-back of the shutter blade of a camera wherein a plate spring projecting into the moving field of a shutter operation is provided with the motion of the shutter operation member being braked at its end phase by the plate spring and being anchored by the plate spring in order to prevent spring-back, while at the same time, a switch of an electrical circuit of the camera is operated by means of a second plate spring.