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:
Sep. 14, 1982
Filed:
Dec. 12, 1980
Kazufumi Kobayashi, Tokyo, JP;
Shigeru Hashimoto, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In an interchangeable lens assembly for a camera, the aperture signal transmitting means are formed to include an axially elongate portion for communication of exposure control signals between a diaphragm mechanism in the lens assembly and a control mechanism in the camera body, and an annular portion having grooves or recesses therein for engaging bearing balls. The support structure includes a barrel member which is part of the lens assembly and which also includes a groove or recess cooperative with the groove or recess in the signal transmitting member to support the balls with retainer means being provided for the bearing balls. The retainer means is arranged between the signal transmitting member and the barrel member and is configured with an annular shape with holes equally spaced thereabout in a circular pattern about the optical axis of the lens assembly to retain the balls rotatably within the holes.