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:
Jun. 07, 1983
Filed:
Jul. 08, 1980
Akiyasu Sumi, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An operating mechanism for a zoom lens assembly is constructed with an integrally molded actuating sleeve rotatably fitted on the exterior surface of a tubular body of the assembly and held against axial movement, with a zoom lens cell being slideably fitted to the inner diameter of the tubular body. A camming connection is provided between the sleeve and the cell through a longitudinally elongated slot formed in the tube. The camming connection is formed from an inwardly directed helical cam protuberance having a rectangular cross-sectional configuration molded integrally with the sleeve, a slider freely fitted in the slot affixed to the cell, a cam follower in the form of a detent roller radially outwardly extending from the slider, a reaction roller axially movably mounted in a keyway in the slider, and a spring urging the detent and the reaction rollers to engage the cam protuberance at opposite radial shoulders thereof with a clamping effect.