ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,464,277, issued on Nov. 4.
"Air flow control valve structure for audio device" was invented by Donghyun Seo (Ansan-si, South Korea) and Minkoo Park (Hwaseong-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides an audio device that can selectively allow and block the vent flow of external sound using an air flow control valve mechanism and can finely control the amount of opening."
The patent was filed on March 11, 2024, under Application No. 18/600,919.
*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml...