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:
Dec. 03, 2019
Filed:
Jun. 29, 2016
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Osamu Miyazawa, Shimosuwa, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25J 9/12 (2006.01);
U.S. Cl.
CPC ...
B25J 9/12 (2013.01);
Abstract
A piezoelectric drive device includes a plurality of piezoelectric vibrating portions that drive a driven member. A difference between the maximum resonance frequency and the minimum resonance frequency in each resonance frequency of the plurality of piezoelectric vibrating portions falls within a range of 0.001% to 5% of an average resonance frequency of the plurality of piezoelectric vibrating portions.