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:
Aug. 31, 1999
Filed:
Dec. 10, 1997
Applicant:
Inventors:
Shigeru Yoshida, Omiya, JP;
Syunichiro Ouchi, Omiya, JP;
Assignee:
Fuji Photo Optical Co., Ltd., Omiya, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G03B / ; F16H / ;
U.S. Cl.
CPC ...
396529 ; 359827 ; 359830 ; 74461 ;
Abstract
An interlock ring is provided to transmit a rotational force of a casing of a lens unit to a attachment ring, and contact faces of a projection of the attachment ring and a projection of the interlock ring are slant. Thereby, the stress is prevented from concentrating at the base corners of the projections. Thus, the projections can be prevented from breaking due to over-fastening.