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. 23, 2013
Filed:
Nov. 23, 2011
Hiroaki Inukai, Kawasaki, JP;
Hiroaki Inukai, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A shutter base plate is formed with a first shaft parallel to an optical axis of a photographic light flux, and a blade lever rotates about the first shaft to drive a first blade and a second blade. A drive lever rotates about the first shaft to drive the blade lever. A second cam gear rotates about a second shaft formed on the shutter base plate in parallel to the first shaft to charge a mirror drive spring. A first cam gear rotates about a third shaft formed on the shutter base plate in parallel to the first shaft to switch between a state in which the blade lever is held so that the first blade and the second blade close the aperture and a state in which holding of the blade lever is released.