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:
Apr. 05, 2022
Filed:
Dec. 19, 2017
Dynamic Ear Company B.v., Delft, NL;
Pieter Gerard Van 'T Hof, Delft, NL;
Joost Leendert Lodder, Delft, NL;
Sonova AG, Staefa, CH;
Abstract
An earplug and method for attenuating sound. An acoustic canal extends straight through a housing to guide the sound inside an ear canal. The acoustic canal comprises a canal section dimensioned to fit at least partially inside the ear canal. The canal section ends at one side in a first exterior opening to let the sound into the ear canal. Another side of the canal section transitions into a first resonance volume with a relatively wide diameter. A second resonance volume ends at one side in a second exterior opening and, the other side being separated from the first resonance volume by a sound attenuating mesh. This provides resonance cavities that compensate attenuation of the mesh over a wide range of high frequencies.