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. 10, 2010
Filed:
Feb. 02, 2009
Kazunori Ishizuka, Kanagawa, JP;
Toshiharu Suzuki, Saitama, JP;
Makio Oishi, Tokyo, JP;
Koto Miya, Saitama, JP;
Kazunori Ishizuka, Kanagawa, JP;
Toshiharu Suzuki, Saitama, JP;
Makio Oishi, Tokyo, JP;
Koto Miya, Saitama, JP;
Hoya Corporation, Tokyo, JP;
Abstract
A cam mechanism includes a cam ring having front and rear cam grooves which have a common reference cam diagram and are formed so that a front part of the front cam groove and a rear part of the rear cam groove are omitted from the reference cam diagram. A normal-width section and a wide-width section are provided in each of the front and rear cam grooves. In a zoom range, an associated cam follower of a driven member is engaged in the normal-width section of one of the front and rear cam grooves, and another associated cam follower of the driven member is positioned out of the other of the front and rear cam grooves. In a transition state between the zoom range and an accommodated position, both of the associated cam followers are positioned out of the normal-width sections of the respective front and rear cam grooves.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile