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. 05, 1991
Filed:
May. 30, 1989
Applicant:
Inventor:
Etsuro Furutsu, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
318116 ; 310316 ;
Abstract
There is disclosed a vibration wave driven motor, in which, when the motor is driven in a high frequency region distant from the resonance drive state, the variation of frequency is not prohibited in response to the detection of the drive state mentioned above, and the variation of frequency is prohibited in response to the detection of the drive state when the motor approaches to the resonance drive state.