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. 27, 2022
Filed:
Oct. 23, 2018
Universite DE Lille, Lille, FR;
Ecole Centrale DE Lille, Villeneuve d'Ascq, FR;
Centre National DE LA Recherche Scientifique, Paris, FR;
Sorbonne Universite, Paris, FR;
Michaël Aymeric Cyril Baudoin, Lezennes, FR;
Olivier Khalil Nizar Bou Matar-Lacaze, Valenciennes, FR;
Antoine Jean-Pierre René Riaud, La Roche sur Yon, FR;
Jean-Louis Pierre Thomas, Montgeron, FR;
UNIVERSITE DE LILLE, Lille, FR;
ECOLE CENTRALE DE LILLE, Villeneuve d'Ascq, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris, FR;
SORBONNE UNIVERSITE, Paris, FR;
Abstract
Electroacoustic device that includes a body, an electrode to be electrically powered, named hot electrode, and an electrode to be electrically grounded, named ground electrode. The body includes a piezoelectric part or the electroacoustic device further including a piezoelectric part different from the body. The hot electrode includes a hot track spiraling around a spiral axis. The radial step between two consecutive coils of the hot track decreasing radially from the spiral axis. The hot electrode and the ground electrode are arranged on the piezoelectric part such as to define a wave transducer configured to generate a focalised ultrasonic vortex propagating in the body and/or, when a fluid medium is acoustically coupled with the electroacoustic device, in the fluid medium.