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:
Mar. 12, 1991
Filed:
May. 24, 1989
Masami Shimizu, Tokyo, JP;
Shigeo Nakashima, Kawasaki, JP;
Yutaka Fujiwara, Kawasaki, JP;
Masaharu Eguchi, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A lens barrel incorporating electric parts such as motors. The lens barrel has a double-sided printed circuit board disposed such that its major plane extend substantially orthogonally to the optical axis. Chip elements such as circuit elements are mounted on the front side of the double-sided printed circuit board while flexible connecting members for connection to the electrical parts are provided on the rear side of the double-sided printed circuit board. A land for allowing electrical check of electric circuit is also provided on the rear side of the double-sided printed circuit board.