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:
Nov. 16, 2004
Filed:
Jun. 12, 2002
Yasuhiro Toyoda, Saitama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention discloses a shutter apparatus including a base plate, a plurality of blades which run between a superposed state and a spread state for opening and closing a shutter aperture and two arms, each of the arms pivotably supported on the base plate. It is characterized in that each of the two arms are pivotably connected to the plurality of blades, and the two arms cause the plurality of blades to run between the superposed state and the spread state, and a protruding section is formed in a central area of at least one of the plurality of the blades, and the protruding section protrudes in the blade running direction so as to overlap with the base plate in the spread state.