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:
Feb. 16, 1982
Filed:
Nov. 07, 1979
Masaharu Shigoku, Osaka, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
A zoom lens barrel has incorporated therein an optical system including a first lens group which is moved both for focusing and for zooming by a single operating ring. A first lens moving frame for holding the first movable lens group is provided separately from the operating ring and is restrained from rotation by a focusing mechanism when the operating ring is turned. An attachment mounting portion is provided on the nonrotatable lens moving frame. The first lens group is moved for zooming free of any eccentricity relative to a second lens group. The attachment on the mounting portion is held stationary against rotation despite turning of the operating ring.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile