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:
Aug. 07, 2018
Filed:
Apr. 24, 2015
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Koichi Kamijo, Matsumoto, JP;
Osamu Miyazawa, Shimosuwa, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02N 2/04 (2006.01); H02N 2/00 (2006.01); H02N 2/10 (2006.01); B25J 9/12 (2006.01); H02N 2/02 (2006.01);
U.S. Cl.
CPC ...
H02N 2/004 (2013.01); B25J 9/12 (2013.01); H02N 2/003 (2013.01); H02N 2/008 (2013.01); H02N 2/0075 (2013.01); H02N 2/026 (2013.01); H02N 2/103 (2013.01); H02N 2/006 (2013.01);
Abstract
A piezoelectric actuator includes a piezoelectric element, a vibrating plate configured to vibrate according to application of a signal to the piezoelectric element, and a driven body driven by the vibration of the vibrating plate. The vibrating plate vibrates in a first mode according to a signal having a first frequency, vibrates in a second mode according to a signal having a second frequency, and vibrates in a third mode according to a signal having a third frequency. The first frequency and the second frequency are different. The first frequency and the third frequency are different.