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, 1985
Filed:
Dec. 08, 1983
Hiroshi Yamamoto, Yokohama, JP;
Makoto Katsuma, Kawasaki, JP;
Hiroyasu Murakami, Tokyo, JP;
Akira Hiramatsu, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A vibration wave motor comprises a movable member friction-contacted to a vibration member, a plurality of electrostrictive element groups oppositely arranged on the opposite surfaces of the vibration member, and voltage applying means for applying voltages to the electrostrictive element groups to generate travelling vibration waves in the vibration member. The electrostrictive elements are arranged such that the electrostrictive elements oppositely arranged on the opposite surfaces of the vibration member are strained in the opposite directions when the voltages are applied thereto.