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. 23, 2013
Filed:
Feb. 08, 2010
Yusuke Adachi, Osaka, JP;
Hideaki Mukae, Hyogo, JP;
Masaru Higashionji, Osaka, JP;
Eiichi Nagaoka, Hyogo, JP;
Yusuke Adachi, Osaka, JP;
Hideaki Mukae, Hyogo, JP;
Masaru Higashionji, Osaka, JP;
Eiichi Nagaoka, Hyogo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A drive unit includes an ultrasonic actuator having an actuator body formed using a piezoelectric element, and a driving element provided on the actuator body and configured to output a driving force by moving according to the vibration of the actuator body, and a control section configured to induce the vibration in the actuator body by applying a first and a second AC voltages having a same frequency and different phases to the piezoelectric element. The control section adjusts the first AC voltage and the second AC voltage so that the first AC voltage and the second AC voltage have different voltage values from each other.