ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,523,374, issued on Jan. 13, was assigned to THE MARLEY COMPANY LLC (Charlotte, N.C.).
"Variable orifice restriction device" was invented by Alex Planer (Bethlehem, Pa.), Chris Ellingwood (Tannersville, Pa.), Austin Seese (Johnstown, Pa.) and Patrick Villaume (Easton, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "This application is directed to a device and method for providing a variable orifice restrictor to an air induction system to achieve an improved turndown ratio of an airflow rate. The devices of the invention improve turndown ratio by relying on a pressure differential."
The patent was filed on Oct. 23, 2020, under Application No. 17/078,...