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. 08, 1998
Filed:
Aug. 28, 1997
Tetuji Kamata, Kawasaki, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A lens barrel and a cam barrel are disclosed, in which a cam barrel is miniaturized and a molding ability is improved while maintaining the strength of the cam barrel. An outer peripheral side cam groove having a bottom part which does not penetrate a zooming cam barrel is formed in the outer peripheral part of the zooming cam barrel. An inner peripheral side cam groove having a bottom part which does not penetrate the zooming cam barrel is formed in the inner peripheral part of the zooming cam barrel. The outer and inner peripheral side cam grooves are arranged so as to be prevented from overlapping each other in the radial direction of the zooming cam barrel. The total depth of the outer and inner peripheral side cam grooves is set larger than the thickness t of the zooming cam barrel.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile