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. 07, 2001
Filed:
Sep. 16, 1991
Applicant:
Inventors:
Tsuyoshi Fukuda, Kanagawa-ken, JP;
Tatsuo Konno, Kanagawa-ken, JP;
Toshio Matsumoto, Kanagawa-ken, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 1/700 ;
U.S. Cl.
CPC ...
G03B 1/700 ;
Abstract
In an optical apparatus having a mount adapted to be rotated to be attached to and detached from a mount of another apparatus, the mount of the optical apparatus is molded by plastic material, and concave and convex portions are provided on an abutment surface of the mount of the optical apparatus to reduce the sliding area, thereby making the scratches caused by the sliding inconspicuous.