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. 11, 2012
Filed:
May. 16, 2011
Hiroshi Asano, Nagaokakyo, JP;
Hiroshi Asano, Nagaokakyo, JP;
Murata Manufacturing Co., Ltd., Nagaokakayo-Shi, Kyoto-fu, JP;
Abstract
A piezoelectric oscillator that generates a travelling wave using two B (1, n) mode (n is a natural number) standing waves that are out of phase with each other by 90°. On a lower surface of an oscillating body, (4/3)n piezoelectric elements are provided in order to generate an n-wave travelling wave by combining the two B (1, n) mode standing waves that are out of phase with each other by 90°. When a wavelength of the travelling wave is given by λ, each of the piezoelectric elements has a dimension in a circumferential direction occupying a central angle corresponding to (1/2)λ, and a plurality of piezoelectric elements are spaced apart from each other at intervals each occupies a central angle corresponding to (1/4)λ.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile