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:
Mar. 01, 2011
Filed:
Nov. 20, 2009
Masaru Higashionji, Osaka, JP;
Hideaki Mukae, Hyogo, JP;
Yusuke Adachi, Osaka, JP;
Eiichi Nagaoka, Hyogo, JP;
Masaru Higashionji, Osaka, JP;
Hideaki Mukae, Hyogo, JP;
Yusuke Adachi, Osaka, JP;
Eiichi Nagaoka, Hyogo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A drive unit includes a vibration actuator for controlling the piezoelectric element. A control section controls the vibration actuator switchably between a normal operation mode in which the piezoelectric element vibrates at a predetermined frequency to let the vibration actuator output a driving force, and a heating mode in which the piezoelectric element vibrates in a direction perpendicular to a direction of the driving force at a frequency different from the frequency in the normal operation mode to heat the piezoelectric element.