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. 20, 2013
Filed:
Sep. 29, 2009
Yuichirou Usuda, Saitama, JP;
Shigemi Takahashi, Tokyo, JP;
Yuichirou Usuda, Saitama, JP;
Shigemi Takahashi, Tokyo, JP;
Nidec Copal Corporation, Tokyo, JP;
Abstract
When a rotation member is rotated clockwise by a stepping motor, one main operation member is rotated counterclockwise through a link member and the other main operation member is rotated clockwise by said main operation member through the link member. Also, one sub operation member is rotated counterclockwise by said main operation member through the link member, and the other sub operation member is rotated clockwise by the other main operation member through the link member. This causes the amount of overlap between a main split blade mounted to said main operation member and a sub split blade mounted to said sub operation member to be increased and also causes the amount of overlap between a main split blade mounted to the other main operation member and a sub split blade mounted to the other sub operation member to be also increased. As a result, the aperture opening formed between the two main split blades is increased.