ALEXANDRIA, Va., May 26 -- United States Patent no. 12,636,193, issued on May 26, was assigned to LIGHTSPEED AVIATION INC. (Lake Oswego, Ore.).
"Hearing protection device testing system and method" was invented by Brian David Frost (Lake Oswego, Ore.) and Allan Schrader (Lake Oswego, Ore.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system and method for testing effectiveness of in-the-ear (ITE) hearing protection devices (HPD) while inserted in a user's ears include a headset having circumaural earcups positionable over the user's ears and programmed to sequentially generate sound at a plurality of frequencies and store the user's hearing threshold at each frequency. The user's values are compared to as...