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. 23, 1999
Filed:
Dec. 09, 1997
Masahiro Oono, Saitama-ken, JP;
Hisao Iwanade, Tokyo, JP;
Noboru Saitoh, Saitama-ken, JP;
Koji Sato, Saitama-ken, JP;
Sukenori Shiba, Saitama-ken, JP;
Tatsuya Yoshida, Saitama-ken, JP;
Nobuyuki Nagai, Saitama-ken, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A drive apparatus for a zoom lens barrel, in which at least two movable zooming lens groups are moved upon zooming, includes lens frames which respectively hold the two movable zooming lens groups, two parallel drive plates which are provided with cam grooves and which are pivoted to a common shaft to move the two movable zooming lens groups, a pair of drive gears which are in mesh with corresponding sector gears of the drive plates, and two drive mechanisms which individually drive the drive gears upon zooming.