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. 03, 2020
Filed:
Aug. 14, 2017
Raytheon Company, Waltham, MA (US);
Board of Regents, the University of Texas System, Austin, TX (US);
Howard C. Choe, Southlake, TX (US);
Mikhail Kozlov, Dallas, TX (US);
Raytheon Company, Waltham, MA (US);
Board of Regents, The University of Texas System, Austin, TX (US);
Abstract
A transducer includes an acoustic reflector, an acoustic coupler and one or more thermoacoustic frames. The acoustic coupler is disposed proximate to an output of the transducer and each of the thermoacoustic frames is disposed between the acoustic reflector and the acoustic coupler. The thermoacoustic frames, the acoustic reflector and the acoustic coupler form a resonator with each of the thermoacoustic frames configured to emit a broadband acoustic signal in response to receiving electrical energy. Additionally, the resonator is configured to emit a narrowband acoustic signal at the transducer output in response to receiving the broadband acoustic signal. A method includes adjusting a frequency of the narrowband acoustic signal by controlling a spacing between the thermoacoustic frames and one or more components of the resonator. Thermoacoustic device embodiments capable of resonant emission of intense ultrasound radiation generated by sheets of multi-walled carbon nanotubes (MWNT) are also disclosed.