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. 29, 2020
Filed:
Oct. 21, 2016
Aerovia, Reims, FR;
Universite DE Reims Champargne Ardenne, Reims, FR;
C.n.r.s., Paris, FR;
AEROVIA, Reims, FR;
Abstract
The invention relates to a device comprising: a resonant tank () consisting of two primary tubes () which are closed on the ends thereof and interconnected, close to each of the ends thereof, by two secondary tubes (), and provided with a gas-introducing means (); a first laser source () modulated to a first resonance frequency of the tank, which supplies an excitation energy in at least one of the primary tubes, with an emission wavelength corresponding to a local maximum absorption wavelength for a first gas, for generating a first stationary wave propagating along the secondary tubes; a second laser source () modulated to a second resonance frequency of the tank, which supplies an excitation energy in at least one of the secondary tubes, with an emission wavelength corresponding to a local maximum absorption wavelength for a second gas, for generating a second stationary wave propagating along the primary tubes; at least one acoustoelectric transducer () arranged on a wall of each tube for detecting the acoustic signals produced in said tube; and means () for processing the signals from the transducers in order to extract two amplitudes for the two stationary waves.