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. 05, 1995
Filed:
Feb. 04, 1993
Applicant:
Inventors:
Ryuji Suzuki, Yokohama, JP;
Mitsuru Shinohara, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354400 ; 3541951 ; 359823 ; 74625 ;
Abstract
Balls are clamped between a first gear driven by an auto-focusing motor and a second gear driven by a manual focusing ring. The balls are arranged to revolve about a given axis. A projection having an elasticity and provided to the second gear itself is brought into contact with a fixing member provided at a predetermined position, so that a clamping force for clamping the balls is generated by the projection.