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:
Jul. 02, 1996
Filed:
Sep. 29, 1994
Applicant:
Inventor:
Satoru Fujishima, Nagaokakyo, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310325 ; 310323 ;
Abstract
An ultrasonic motor has a plurality of Langevin vibrators arranged in a ring, and the Langevin vibrators vibrate when an alternating voltage is provided thereto. Each of the Langevin vibrators has a first polarized region and a second polarized region which are polarized in mutually opposite directions. When the Langevin vibrators are supplied with an alternating voltage so as to vibrate in the length mode and flexural mode at substantially the same frequency, the edges of the metal terminals move in a elliptical motion, which drives the rotor.