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:
Aug. 16, 2016
Filed:
Jun. 14, 2012
Mine Sumitomo, Tokyo, JP;
Mine Sumitomo, Tokyo, JP;
NIKON CORPORATION, Tokyo, JP;
Abstract
A vibration actuator includes an elastic member and a relative movement member. The elastic member generates oscillatory waves by oscillation of an electromechanical conversion element. The relative movement member with which the elastic member is in pressure contact is driven by the oscillatory waves to rotationally move with respect to the elastic member. Of the elastic member and the relative movement member, at least one member has a plurality of spaces at one contacting face opposite to the other contacting face of the other member. The spaces are filled with friction coefficient adjusting substances so that a coefficient of friction of the one contacting face of the one member changes in a radial direction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile