ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,405,620, issued on Sept. 2, was assigned to K&N Engineering Inc. (Corona, Calif.).

"Portable mass airflow training module" was invented by Mac McClanahan (Riverside, Calif.), Steve Williams (Cherry Valley, Calif.) and Joel Valles (Simi Valley, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus and methods are provided for a portable mass airflow (MAF) training module configured to simulate an air intake into an internal combustion engine. An in-line blower draws an airflow through an air filter by way of a first air duct and a second air duct. A throttle assembly is coupled between the first air duct and the second air duct. The throttle...