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. 29, 2013
Filed:
Apr. 12, 2010
Masatake Takahashi, Minato-ku, JP;
Yasuhiro Sasaki, Minato-ku, JP;
Yasuharu Onishi, Minato-ku, JP;
Yukio Murata, Minato-ku, JP;
Ukyo Mori, Minato-ku, JP;
Jun Kuroda, Minato-ku, JP;
Masatake Takahashi, Minato-ku, JP;
Yasuhiro Sasaki, Minato-ku, JP;
Yasuharu Onishi, Minato-ku, JP;
Yukio Murata, Minato-ku, JP;
Ukyo Mori, Minato-ku, JP;
Jun Kuroda, Minato-ku, JP;
NEC Corporation, Tokyo, JP;
Abstract
One object of the present invention is to an achieve increase of amplitude of vibrations and/or flattening of frequency dependence of the amplitude of a piezoelectric actuator. Piezoelectric actuator () has first piezoelectric vibrator (), second piezoelectric vibrator (), and vibrating membrane (). First piezoelectric vibrator () includes first pedestal () and first piezoelectric element () connected to the first pedestal. Second piezoelectric vibrator () includes second pedestal () and second piezoelectric element () connected to the second pedestal. Vibrating membrane () has opening (). First piezoelectric vibrator () is connected to one surface of vibrating membrane () straddling opening () of the vibrating membrane. Second piezoelectric vibrator () is connected to another surface of vibrating membrane () straddling opening () of the vibrating membrane.