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:
Apr. 23, 1985
Filed:
Nov. 16, 1983
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310328 ; 310317 ;
Abstract
A pair of electro-strain element groups each having at least one polarized or non-polarized electro-strain element are arranged or polarized phase-differentially, and the electro-strain element groups are electrically insulated from each other and the electro-strain element groups and a vibrating member are also electrically insulated from each other. Pulse voltages of different phases derived from one DC power supply are applied to the respective electro-strain element groups, and a moving member press-contacted to the vibrating member is friction-driven by a travelling vibration wave generated in the vibrating member.