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:
Oct. 08, 1996
Filed:
May. 09, 1995
Applicant:
Inventors:
Mitsumasa Okubu, Tokyo, JP;
Toshihiko Imai, Tokyo, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H02N / ;
U.S. Cl.
CPC ...
310316 ; 310317 ;
Abstract
This invention discloses a device for rotating a traveling-wave-type ultrasonic motor having an electromechanical conversion device to which two-phase AC signals generated from a DC power source and having a phase difference of 90 degrees are supplied, the device for rotating a traveling-wave-type ultrasonic motor comprising: