ALEXANDRIA, Va., July 23 -- United States Patent no. 12,366,253, issued on July 22, was assigned to ebm-papst St. Georgen GmbH & Co. KG (St. Georgen, Germany).
"Radial fan with tapered tongue geometry" was invented by Tobias Sieger (Geisingen, Germany) and Saurabh Gupta (St. Georgen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "Radial fan has tapered tongue geometry, impeller with impeller blades extending in radial direction about axis of rotation, and volute casing accommodating impeller rotatable about axis of rotation. Impeller blades each have a radially outward end edge, and end edges directly adjacent in circumferential direction that span an imaginary surface therebetween. Volute casing has...