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:
Aug. 06, 2013
Filed:
Nov. 22, 2011
Applicant:
Yuki Niwamae, Yokohama, JP;
Inventor:
Yuki Niwamae, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 19/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
After a first cam bear has unlocked a blade lever, a second cam gear is driven from a mirror-down position to a mirror-up position. Accordingly, a first blade and a second blade are driven in a direction of opening an aperture by an urging force of a blade return spring before a mirror starts a mirror-up operation.