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:
Mar. 29, 2005
Filed:
May. 05, 2003
Hiroaki Suzuki, Saitama, JP;
Hiroaki Suzuki, Saitama, JP;
PENTAX Corporation, Tokyo, JP;
Abstract
A zoom lens barrel includes a linear guide ring which is positioned about an optical axis and includes a linear guide slot; a cam ring which is coaxially positioned around the linear guide ring and includes a cam groove; and a movable lens frame which supports a lens group and includes a cam follower which passes through the linear guide slot and engages in the cam groove. The cam ring is provided with a large ring portion, a small ring portion having a smaller diameter than the large ring portion, and a radial flange portion positioned therebetween. The cam groove is formed on both the small ring portion and the radial flange portion so that one end of the cam groove constitutes an open end at the radial flange potion, whereby the cam follower can be inserted into the cam groove through the open end.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile